947 lines
27 KiB
C
947 lines
27 KiB
C
/**
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* @file uart.c
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* @author JL
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* @brief 串口UART模块C文件
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* @version 1.2
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* @date 2018-11-22
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*/
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#include "asm/clock.h"
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#include "asm/uart_dev.h"
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#include "asm/cpu.h"
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#include "generic/gpio.h"
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#include "spinlock.h"
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#ifdef SUPPORT_MS_EXTENSIONS
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#pragma bss_seg(".uart_bss")
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#pragma data_seg(".uart_data")
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#pragma const_seg(".uart_const")
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#pragma code_seg(".uart_code")
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#endif
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#define UART_CLK clk_get("uart")
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#define UART_OT_CLK clk_get("lsb")
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static uart_bus_t uart0;
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static uart_bus_t uart1;
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static uart_bus_t uart2;
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/* _WEAK_ */
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/* extern */
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const u32 CONFIG_UART0_ENABLE = 1;
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/* _WEAK_ */
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/* extern */
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const u32 CONFIG_UART1_ENABLE = 1;
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/* _WEAK_ */
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/* extern */
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const u32 CONFIG_UART2_ENABLE = 1;
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/* _WEAK_ */
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/* extern */
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const u32 CONFIG_UART0_ENABLE_TX_DMA = 1;
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/* _WEAK_ */
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/* extern */
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const u32 CONFIG_UART1_ENABLE_TX_DMA = 1;
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/* _WEAK_ */
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/* extern */
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const u32 CONFIG_UART2_ENABLE_TX_DMA = 1;
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static u32 kfifo_get(KFIFO *kfifo, u8 *buffer, u32 len)
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{
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unsigned int i;
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len = MIN(len, kfifo->buf_in - kfifo->buf_out);
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i = MIN(len, kfifo->buf_size - (kfifo->buf_out & (kfifo->buf_size - 1)));
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memcpy(buffer, kfifo->buffer + (kfifo->buf_out & (kfifo->buf_size - 1)), i);
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memcpy(buffer + i, kfifo->buffer, len - i);
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kfifo->buf_out += len;
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return len;
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}
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static u32 kfifo_length(KFIFO *kfifo)
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{
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return kfifo->buf_in - kfifo->buf_out;
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}
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/**
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* @brief ut0发送一个byte
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*
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* @param a 要发送的字节
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*/
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static void UT0_putbyte(char a)
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{
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if (JL_UART0->CON0 & BIT(0)) {
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JL_UART0->BUF = a;
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__asm__ volatile("csync");
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while ((JL_UART0->CON0 & BIT(15)) == 0);
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JL_UART0->CON0 |= BIT(13);
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}
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}
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/**
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* @brief ut0接收一个byte
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*
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* @param buf 字节存放地址
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* @param timeout 接收超时时间，单位1ms
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* @return 返回0：接收失败；返回1：接收成功
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*/
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static u8 UT0_getbyte(u8 *buf, u32 timeout)
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{
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u32 _timeout, _t_sleep;
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timeout = ut_msecs_to_jiffies(timeout);
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if (JL_UART0->CON0 & BIT(6)) {
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//DMA_MODE
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if (!kfifo_length(&uart0.kfifo)) {
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UT_OSSemPend(&uart0.sem_rx, timeout);
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}
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UT_OSSemSet(&uart0.sem_rx, 0);
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return kfifo_get(&uart0.kfifo, buf, 1);
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} else {
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_timeout = timeout + ut_get_jiffies();
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_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
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while (!(JL_UART0->CON0 & BIT(14))) {
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if (timeout && time_before(_timeout, ut_get_jiffies())) {
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return 0;
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}
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if (time_before(_t_sleep, ut_get_jiffies())) {
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ut_sleep();
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_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
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}
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}
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*buf = JL_UART0->BUF;
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JL_UART0->CON0 |= BIT(12);
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__asm__ volatile("csync"); //make RX_PND_CLR taking effect
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}
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return 1;
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}
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/**
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* @brief ut0中断函数
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*/
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SET_INTERRUPT
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static void UT0_isr_fun(void)
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{
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u32 rx_len = 0;
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if ((JL_UART0->CON0 & BIT(2)) && (JL_UART0->CON0 & BIT(15))) {
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JL_UART0->CON0 |= BIT(13);
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UT_OSSemPost(&uart0.sem_tx);
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if (uart0.isr_cbfun) {
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uart0.isr_cbfun(&uart0, UT_TX);
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}
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}
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if ((JL_UART0->CON0 & BIT(3)) && (JL_UART0->CON0 & BIT(14))) {
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JL_UART0->CON0 |= BIT(7); //DMA模式
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JL_UART0->CON0 |= BIT(12); //清RX PND
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rx_len = JL_UART0->HRXCNT; //读当前串口接收数据的个数
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/* uart0.kfifo.buf_in += uart0.frame_length; //每满frame_length字节则产生一次中断 */
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uart0.kfifo.buf_in += rx_len;
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UT_OSSemPost(&uart0.sem_rx);
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if (uart0.isr_cbfun) {
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uart0.isr_cbfun(&uart0, UT_RX);
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}
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}
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if ((JL_UART0->CON0 & BIT(5)) && (JL_UART0->CON0 & BIT(11))) {
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//OTCNT PND
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JL_UART0->CON0 |= BIT(7); //DMA模式
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JL_UART0->CON0 |= BIT(10); //清OTCNT PND
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JL_UART0->CON0 |= BIT(12); //清RX PND(这里的顺序不能改变，这里要清一次)
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rx_len = JL_UART0->HRXCNT; //读当前串口接收数据的个数
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if (rx_len) {
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uart0.kfifo.buf_in += rx_len;
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/* printf("%s() %d\n", __func__, __LINE__); */
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UT_OSSemPost(&uart0.sem_rx);
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if (uart0.isr_cbfun) {
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uart0.isr_cbfun(&uart0, UT_RX_OT);
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}
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}
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}
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}
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/**
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* @brief ut0接收字符串
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*
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* @param buf 字符串存放首地址
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* @param len 预接收长度
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* @param timeout 接收超时时间，单位1ms
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* @return 返回实际接收长度
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*/
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static u32 UT0_read_buf(u8 *buf, u32 len, u32 timeout)
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{
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u32 i;
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u32 _timeout, _t_sleep;
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if (len == 0) {
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return 0;
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}
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timeout = ut_msecs_to_jiffies(timeout);
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if (JL_UART0->CON0 & BIT(6)) {
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if (!kfifo_length(&uart0.kfifo)) {
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UT_OSSemPend(&uart0.sem_rx, timeout);
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}
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UT_OSSemSet(&uart0.sem_rx, 0);
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return kfifo_get(&uart0.kfifo, buf, len);
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} else {
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_timeout = timeout + ut_get_jiffies();
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_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
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for (i = 0; i < len; i++) {
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while (!(JL_UART0->CON0 & BIT(14))) {
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if (timeout && time_before(_timeout, ut_get_jiffies())) {
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return i;
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}
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if (time_before(_t_sleep, ut_get_jiffies())) {
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ut_sleep();
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_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
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}
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}
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*(buf + i) = JL_UART0->BUF;
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JL_UART0->CON0 |= BIT(12);
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__asm__ volatile("csync"); //make RX_PND_CLR taking effect
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}
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}
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return len;
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}
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/**
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* @brief ut0发送字符串
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*
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* @param buf 字符串首地址
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* @param len 发送的字符串长度
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*/
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static void UT0_write_buf(const u8 *buf, u32 len)
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{
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u32 i;
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if (len == 0) {
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return;
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}
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if (CONFIG_UART0_ENABLE_TX_DMA) {
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UT_OSSemSet(&uart0.sem_tx, 0);
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JL_UART0->CON0 |= BIT(13);
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JL_UART0->CON0 |= BIT(2);
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JL_UART0->TXADR = (u32)buf;
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JL_UART0->TXCNT = len;
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UT_OSSemPend(&uart0.sem_tx, 0);
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JL_UART0->CON0 &= ~BIT(2);
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} else {
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for (i = 0; i < len; i ++) {
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UT0_putbyte(*(buf + i));
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}
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}
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}
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/**
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* @brief ut0配置波特率
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*
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* @param baud 波特率值
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*/
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static void UT0_set_baud(u32 baud)
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{
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JL_UART0->CON0 &= ~(BIT(0) | BIT(1));
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JL_UART0->CON0 |= BIT(13) | BIT(12) | BIT(10);
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JL_UART0->BAUD = ((UART_CLK + baud / 2) / baud) / 4 - 1;
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if (JL_UART0->CON0 & BIT(5)) {
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if (uart0.rx_timeout > 10) {
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JL_UART0->OTCNT = (uart0.rx_timeout / 10) * (UART_OT_CLK / 10) / 10;
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} else {
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JL_UART0->OTCNT = uart0.rx_timeout * UART_OT_CLK / 1000;
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}
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}
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JL_UART0->CON0 |= BIT(13) | BIT(12) | BIT(10) | BIT(0) | BIT(1);
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}
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/**
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*获取串口数据长度
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*/
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static u32 uart1_get_data_len()
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{
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return kfifo_length(&uart1.kfifo);
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}
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/**
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* @brief ut0使能
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*/
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static void UT0_open(u32 baud, u32 is_9bit, void *cbuf, u32 cbuf_size, u32 rx_cnt, u32 ot)
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{
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JL_UART0->CON0 = BIT(13) | BIT(12) | BIT(10);
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UT_OSSemCreate(&uart0.sem_rx, 0);
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UT_OSSemCreate(&uart0.sem_tx, 0);
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request_irq(IRQ_UART0_IDX, 3, UT0_isr_fun, 0);
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if (cbuf) {
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uart0.kfifo.buffer = cbuf;
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uart0.kfifo.buf_size = cbuf_size;
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uart0.kfifo.buf_in = 0;
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uart0.kfifo.buf_out = 0;
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uart0.frame_length = rx_cnt;
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uart0.rx_timeout = ot;
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JL_UART0->RXSADR = (u32)uart0.kfifo.buffer;
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JL_UART0->RXEADR = (u32)(uart0.kfifo.buffer + uart0.kfifo.buf_size);
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JL_UART0->RXCNT = uart0.frame_length;
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JL_UART0->CON0 |= BIT(6) | BIT(5) | BIT(3);
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}
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if (is_9bit) {
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JL_UART0->CON2 |= BIT(0);
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} else {
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JL_UART0->CON2 &= ~BIT(0);
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}
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UT0_set_baud(baud);
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}
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/**
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* @brief ut0关闭，注销
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*/
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static void UT0_close(void)
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{
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UT_OSSemClose(&uart0.sem_rx);
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UT_OSSemClose(&uart0.sem_tx);
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irq_disable(IRQ_UART0_IDX);
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JL_UART0->CON0 = BIT(13) | BIT(12) | BIT(10);
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}
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/**
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* @brief ut1发送一个byte
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*
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* @param a 要发送的字节
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*/
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static void UT1_putbyte(char a)
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{
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if (JL_UART1->CON0 & BIT(0)) {
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JL_UART1->BUF = a;
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__asm__ volatile("csync");
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while ((JL_UART1->CON0 & BIT(15)) == 0);
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JL_UART1->CON0 |= BIT(13);
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}
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}
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/**
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* @brief ut1接收一个byte
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*
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* @param buf 字节存放地址
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* @param timeout 接收超时时间，单位1ms
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10ms¥；返回1：接收成功
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*/
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static u8 UT1_getbyte(u8 *buf, u32 timeout)
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{
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u32 _timeout, _t_sleep;
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timeout = ut_msecs_to_jiffies(timeout);
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if (JL_UART1->CON0 & BIT(6)) {
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if (!kfifo_length(&uart1.kfifo)) {
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UT_OSSemPend(&uart1.sem_rx, timeout);
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}
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UT_OSSemSet(&uart1.sem_rx, 0);
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return kfifo_get(&uart1.kfifo, buf, 1);
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} else {
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_timeout = timeout + ut_get_jiffies();
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_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
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while (!(JL_UART1->CON0 & BIT(14))) {
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if (timeout && time_before(_timeout, ut_get_jiffies())) {
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return 0;
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}
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if (time_before(_t_sleep, ut_get_jiffies())) {
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ut_sleep();
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_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
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}
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}
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*buf = JL_UART1->BUF;
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JL_UART1->CON0 |= BIT(12);
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__asm__ volatile("csync"); //make RX_PND_CLR taking effect
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}
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return 1;
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}
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/**
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* @brief ut1中断函数
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*/
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SET_INTERRUPT
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static void UT1_isr_fun(void)
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{
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u32 rx_len = 0;
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if ((JL_UART1->CON0 & BIT(2)) && (JL_UART1->CON0 & BIT(15))) {
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JL_UART1->CON0 |= BIT(13);
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UT_OSSemPost(&uart1.sem_tx);
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if (uart1.isr_cbfun) {
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uart1.isr_cbfun(&uart1, UT_TX);
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}
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}
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if ((JL_UART1->CON0 & BIT(3)) && (JL_UART1->CON0 & BIT(14))) {
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JL_UART1->CON0 |= BIT(7); //DMA模式
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JL_UART1->CON0 |= BIT(12); //清RX PND
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rx_len = JL_UART1->HRXCNT; //读当前串口接收数据的个数
|
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/* uart1.kfifo.buf_in += uart1.frame_length; //每满32字节则产生一次中断 */
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uart1.kfifo.buf_in += rx_len;
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UT_OSSemPost(&uart1.sem_rx);
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if (uart1.isr_cbfun) {
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uart1.isr_cbfun(&uart1, UT_RX);
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}
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}
|
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|
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if ((JL_UART1->CON0 & BIT(5)) && (JL_UART1->CON0 & BIT(11))) {
|
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//OTCNT PND
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JL_UART1->CON0 |= BIT(7); //DMA模式
|
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JL_UART1->CON0 |= BIT(10); //清OTCNT PND
|
||
JL_UART1->CON0 |= BIT(12); //清RX PND(这里的顺序不能改变，这里要清一次)
|
||
rx_len = JL_UART1->HRXCNT; //读当前串口接收数据的个数
|
||
|
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if (rx_len) {
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||
uart1.kfifo.buf_in += rx_len;
|
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/* printf("%s() %d\n", __func__, __LINE__); */
|
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UT_OSSemPost(&uart1.sem_rx);
|
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if (uart1.isr_cbfun) {
|
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uart1.isr_cbfun(&uart1, UT_RX_OT);
|
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}
|
||
}
|
||
}
|
||
}
|
||
/**
|
||
* @brief ut1接收字符串
|
||
*
|
||
* @param buf 字符串存放首地址
|
||
* @param len 预接收长度
|
||
* @param timeout 接收超时时间，单位1ms
|
||
* @return 返回实际接收的长度
|
||
*/
|
||
static u32 UT1_read_buf(u8 *buf, u32 len, u32 timeout)
|
||
{
|
||
u32 i;
|
||
u32 _timeout, _t_sleep;
|
||
if (len == 0) {
|
||
return 0;
|
||
}
|
||
timeout = ut_msecs_to_jiffies(timeout);
|
||
if (JL_UART1->CON0 & BIT(6)) {
|
||
if (!kfifo_length(&uart1.kfifo)) {
|
||
UT_OSSemPend(&uart1.sem_rx, timeout);
|
||
}
|
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UT_OSSemSet(&uart1.sem_rx, 0);
|
||
|
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return kfifo_get(&uart1.kfifo, buf, len);
|
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} else {
|
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_timeout = timeout + ut_get_jiffies();
|
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_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
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for (i = 0; i < len; i++) {
|
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while (!(JL_UART1->CON0 & BIT(14))) {
|
||
if (timeout && time_before(_timeout, ut_get_jiffies())) {
|
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return i;
|
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}
|
||
if (time_before(_t_sleep, ut_get_jiffies())) {
|
||
ut_sleep();
|
||
_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
|
||
}
|
||
}
|
||
*(buf + i) = JL_UART1->BUF;
|
||
JL_UART1->CON0 |= BIT(12);
|
||
__asm__ volatile("csync"); //make RX_PND_CLR taking effect
|
||
}
|
||
}
|
||
return len;
|
||
}
|
||
/**
|
||
* @brief ut1发送字符串
|
||
*
|
||
* @param buf 字符串首地址
|
||
* @param len 发送的字符串长度
|
||
* @param timeout 发送超时时间，单位10ms
|
||
*/
|
||
static void UT1_write_buf(const u8 *buf, u32 len)
|
||
{
|
||
u32 i;
|
||
if (len == 0) {
|
||
return;
|
||
}
|
||
if (CONFIG_UART1_ENABLE_TX_DMA) {
|
||
UT_OSSemSet(&uart1.sem_tx, 0);
|
||
JL_UART1->CON0 |= BIT(13);
|
||
JL_UART1->CON0 |= BIT(2);
|
||
JL_UART1->TXADR = (u32)buf;
|
||
JL_UART1->TXCNT = len;
|
||
UT_OSSemPend(&uart1.sem_tx, 0);
|
||
JL_UART1->CON0 &= ~BIT(2);
|
||
} else {
|
||
for (i = 0; i < len; i ++) {
|
||
UT1_putbyte(*(buf + i));
|
||
}
|
||
}
|
||
}
|
||
/**
|
||
* @brief ut1配置波特率
|
||
*
|
||
* @param baud 波特率值
|
||
*/
|
||
static void UT1_set_baud(u32 baud)
|
||
{
|
||
JL_UART1->CON0 &= ~(BIT(0) | BIT(1));
|
||
JL_UART1->CON0 |= BIT(13) | BIT(12) | BIT(10);
|
||
JL_UART1->BAUD = ((UART_CLK + baud / 2) / baud) / 4 - 1;
|
||
if (JL_UART1->CON0 & BIT(5)) {
|
||
if (uart1.rx_timeout > 10) {
|
||
JL_UART1->OTCNT = (uart1.rx_timeout / 10) * (UART_OT_CLK / 10) / 10;
|
||
} else {
|
||
JL_UART1->OTCNT = uart1.rx_timeout * UART_OT_CLK / 1000;
|
||
}
|
||
}
|
||
JL_UART1->CON0 |= BIT(13) | BIT(12) | BIT(10) | BIT(0) | BIT(1);
|
||
}
|
||
/**
|
||
* @brief ut1使能
|
||
*/
|
||
static void UT1_open(u32 baud, u32 is_9bit, void *cbuf, u32 cbuf_size, u32 rx_cnt, u32 ot)
|
||
{
|
||
JL_UART1->CON0 = BIT(13) | BIT(12) | BIT(10);
|
||
UT_OSSemCreate(&uart1.sem_rx, 0);
|
||
UT_OSSemCreate(&uart1.sem_tx, 0);
|
||
request_irq(IRQ_UART1_IDX, 3, UT1_isr_fun, 0);
|
||
if (cbuf) {
|
||
uart1.kfifo.buffer = cbuf;
|
||
uart1.kfifo.buf_size = cbuf_size;
|
||
uart1.kfifo.buf_in = 0;
|
||
uart1.kfifo.buf_out = 0;
|
||
uart1.frame_length = rx_cnt;
|
||
uart1.rx_timeout = ot;
|
||
JL_UART1->RXSADR = (u32)uart1.kfifo.buffer;
|
||
JL_UART1->RXEADR = (u32)(uart1.kfifo.buffer + uart1.kfifo.buf_size);
|
||
JL_UART1->RXCNT = uart1.frame_length;
|
||
JL_UART1->CON0 |= BIT(6) | BIT(5) | BIT(3);
|
||
}
|
||
if (is_9bit) {
|
||
JL_UART1->CON2 |= BIT(0);
|
||
} else {
|
||
JL_UART1->CON2 &= ~BIT(0);
|
||
}
|
||
UT1_set_baud(baud);
|
||
}
|
||
/**
|
||
* @brief ut1关闭，注销
|
||
*/
|
||
static void UT1_close(void)
|
||
{
|
||
UT_OSSemClose(&uart1.sem_rx);
|
||
UT_OSSemClose(&uart1.sem_tx);
|
||
irq_disable(IRQ_UART1_IDX);
|
||
JL_UART1->CON0 = BIT(13) | BIT(12) | BIT(10);
|
||
}
|
||
/**
|
||
* @brief ut2发送一个byte
|
||
*
|
||
* @param a 要发送的字节
|
||
*/
|
||
static void UT2_putbyte(char a)
|
||
{
|
||
if (JL_UART2->CON0 & BIT(0)) {
|
||
JL_UART2->BUF = a;
|
||
__asm__ volatile("csync");
|
||
while ((JL_UART2->CON0 & BIT(15)) == 0);
|
||
JL_UART2->CON0 |= BIT(13);
|
||
}
|
||
}
|
||
/**
|
||
* @brief ut2接收一个byte
|
||
*
|
||
* @param buf 字节存放地址
|
||
* @param timeout 接收超时时间，单位1ms
|
||
* @return 返回0：接收失败；返回1：接收成功
|
||
*/
|
||
static u8 UT2_getbyte(u8 *buf, u32 timeout)
|
||
{
|
||
u32 _timeout, _t_sleep;
|
||
timeout = ut_msecs_to_jiffies(timeout);
|
||
|
||
if (JL_UART2->CON0 & BIT(6)) {
|
||
if (!kfifo_length(&uart2.kfifo)) {
|
||
UT_OSSemPend(&uart2.sem_rx, timeout);
|
||
}
|
||
UT_OSSemSet(&uart2.sem_rx, 0);
|
||
|
||
return kfifo_get(&uart2.kfifo, buf, 1);
|
||
} else {
|
||
_timeout = timeout + ut_get_jiffies();
|
||
_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
|
||
while (!(JL_UART2->CON0 & BIT(14))) {
|
||
if (timeout && time_before(_timeout, ut_get_jiffies())) {
|
||
return 0;
|
||
}
|
||
if (time_before(_t_sleep, ut_get_jiffies())) {
|
||
ut_sleep();
|
||
_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
|
||
}
|
||
}
|
||
*buf = JL_UART2->BUF;
|
||
JL_UART2->CON0 |= BIT(12);
|
||
__asm__ volatile("csync"); //make RX_PND_CLR taking effect
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
/**
|
||
* @brief ut2中断函数
|
||
*/
|
||
SET_INTERRUPT
|
||
static void UT2_isr_fun(void)
|
||
{
|
||
//JL_UART2->CON0 |= (BIT(13) | BIT(12) | BIT(10));
|
||
u32 rx_len = 0;
|
||
if ((JL_UART2->CON0 & BIT(2)) && (JL_UART2->CON0 & BIT(15))) {
|
||
JL_UART2->CON0 |= BIT(13);
|
||
UT_OSSemPost(&uart2.sem_tx);
|
||
if (uart2.isr_cbfun) {
|
||
uart2.isr_cbfun(&uart2, UT_TX);
|
||
}
|
||
}
|
||
if ((JL_UART2->CON0 & BIT(3)) && (JL_UART2->CON0 & BIT(14))) {
|
||
JL_UART2->CON0 |= BIT(7); //DMA模式
|
||
JL_UART2->CON0 |= BIT(12); //清RX PND
|
||
rx_len = JL_UART2->HRXCNT; //读当前串口接收数据的个数
|
||
/* uart2.kfifo.buf_in += uart2.frame_length; //每满32字节则产生一次中断 */
|
||
uart2.kfifo.buf_in += rx_len;
|
||
UT_OSSemPost(&uart2.sem_rx);
|
||
if (uart2.isr_cbfun) {
|
||
uart2.isr_cbfun(&uart2, UT_RX);
|
||
}
|
||
}
|
||
|
||
if ((JL_UART2->CON0 & BIT(5)) && (JL_UART2->CON0 & BIT(11))) {
|
||
//OTCNT PND
|
||
JL_UART2->CON0 |= BIT(7); //DMA模式
|
||
JL_UART2->CON0 |= BIT(10); //清OTCNT PND
|
||
JL_UART2->CON0 |= BIT(12); //清RX PND(这里的顺序不能改变，这里要清一次)
|
||
rx_len = JL_UART2->HRXCNT; //读当前串口接收数据的个数
|
||
|
||
if (rx_len) {
|
||
uart2.kfifo.buf_in += rx_len;
|
||
/* printf("%s() %d\n", __func__, __LINE__); */
|
||
UT_OSSemPost(&uart2.sem_rx);
|
||
if (uart2.isr_cbfun) {
|
||
uart2.isr_cbfun(&uart2, UT_RX_OT);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @brief ut1接收字符串
|
||
*
|
||
* @param buf 字符串存放首地址
|
||
* @param len 预接收长度
|
||
* @param timeout 接收超时时间，单位1ms
|
||
* @return 返回实际接收的长度
|
||
*/
|
||
static u32 UT2_read_buf(u8 *buf, u32 len, u32 timeout)
|
||
{
|
||
u32 i;
|
||
u32 _timeout, _t_sleep;
|
||
if (len == 0) {
|
||
return 0;
|
||
}
|
||
|
||
timeout = ut_msecs_to_jiffies(timeout);
|
||
if (JL_UART2->CON0 & BIT(6)) {
|
||
if (!kfifo_length(&uart2.kfifo)) {
|
||
UT_OSSemPend(&uart2.sem_rx, timeout);
|
||
}
|
||
UT_OSSemSet(&uart2.sem_rx, 0);
|
||
return kfifo_get(&uart2.kfifo, buf, len);
|
||
} else {
|
||
_timeout = timeout + ut_get_jiffies();
|
||
_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
|
||
for (i = 0; i < len; i ++) {
|
||
while (!(JL_UART2->CON0 & BIT(14))) {
|
||
if (timeout && time_before(_timeout, ut_get_jiffies())) {
|
||
return i;
|
||
}
|
||
if (time_before(_t_sleep, ut_get_jiffies())) {
|
||
ut_sleep();
|
||
_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
|
||
}
|
||
}
|
||
*(buf + i) = JL_UART2->BUF;
|
||
JL_UART2->CON0 |= BIT(12);
|
||
__asm__ volatile("csync"); //make RX_PND_CLR taking effect
|
||
}
|
||
}
|
||
return len;
|
||
}
|
||
/**
|
||
* @brief ut2发送字符串
|
||
*
|
||
* @param buf 字符串首地址
|
||
* @param len 发送的字符串长度
|
||
* @param timeout 发送超时时间，单位10ms
|
||
*/
|
||
static void UT2_write_buf(const u8 *buf, u32 len)
|
||
{
|
||
u32 i;
|
||
if (len == 0) {
|
||
return;
|
||
}
|
||
if (CONFIG_UART2_ENABLE_TX_DMA) {
|
||
UT_OSSemSet(&uart2.sem_tx, 0);
|
||
JL_UART2->CON0 |= BIT(13);
|
||
JL_UART2->CON0 |= BIT(2);
|
||
JL_UART2->TXADR = (u32)buf;
|
||
JL_UART2->TXCNT = len;
|
||
UT_OSSemPend(&uart2.sem_tx, 0);
|
||
JL_UART2->CON0 &= ~BIT(2);
|
||
} else {
|
||
for (i = 0; i < len; i++) {
|
||
UT2_putbyte(*(buf + i));
|
||
}
|
||
}
|
||
}
|
||
/**
|
||
* @brief ut2配置波特率
|
||
*
|
||
* @param baud 波特率值
|
||
*/
|
||
static void UT2_set_baud(u32 baud)
|
||
{
|
||
JL_UART2->CON0 &= ~(BIT(0) | BIT(1));
|
||
JL_UART2->CON0 |= BIT(13) | BIT(12) | BIT(10);
|
||
JL_UART2->BAUD = ((UART_CLK + baud / 2) / baud) / 4 - 1;
|
||
if (JL_UART2->CON0 & BIT(5)) {
|
||
if (uart2.rx_timeout > 10) {
|
||
JL_UART2->OTCNT = (uart2.rx_timeout / 10) * (UART_OT_CLK / 10) / 10;
|
||
} else {
|
||
JL_UART2->OTCNT = uart2.rx_timeout * UART_OT_CLK / 1000;
|
||
}
|
||
}
|
||
JL_UART2->CON0 |= BIT(13) | BIT(12) | BIT(10) | BIT(0) | BIT(1);
|
||
}
|
||
|
||
/**
|
||
* @brief ut2使能
|
||
*/
|
||
static void UT2_open(u32 baud, u32 is_9bit, void *cbuf, u32 cbuf_size, u32 rx_cnt, u32 ot)
|
||
{
|
||
JL_UART2->CON0 = BIT(13) | BIT(12) | BIT(10);
|
||
UT_OSSemCreate(&uart2.sem_rx, 0);
|
||
UT_OSSemCreate(&uart2.sem_tx, 0);
|
||
request_irq(IRQ_UART2_IDX, 3, UT2_isr_fun, 0);
|
||
if (cbuf) {
|
||
uart2.kfifo.buffer = cbuf;
|
||
uart2.kfifo.buf_size = cbuf_size;
|
||
uart2.kfifo.buf_in = 0;
|
||
uart2.kfifo.buf_out = 0;
|
||
uart2.frame_length = rx_cnt;
|
||
uart2.rx_timeout = ot;
|
||
JL_UART2->RXSADR = (u32)uart2.kfifo.buffer;
|
||
JL_UART2->RXEADR = (u32)(uart2.kfifo.buffer + uart2.kfifo.buf_size);
|
||
JL_UART2->RXCNT = uart2.frame_length;
|
||
JL_UART2->CON0 |= BIT(6) | BIT(5) | BIT(3);
|
||
}
|
||
if (is_9bit) {
|
||
JL_UART2->CON2 |= BIT(0);
|
||
} else {
|
||
JL_UART2->CON2 &= ~BIT(0);
|
||
}
|
||
UT2_set_baud(baud);
|
||
}
|
||
|
||
/**
|
||
* @brief ut2关闭，注销
|
||
*/
|
||
static void UT2_close(void)
|
||
{
|
||
UT_OSSemClose(&uart2.sem_rx);
|
||
UT_OSSemClose(&uart2.sem_tx);
|
||
irq_disable(IRQ_UART2_IDX);
|
||
JL_UART2->CON0 = BIT(13) | BIT(12) | BIT(10);
|
||
}
|
||
|
||
static u32 uart_is_idle(u32 ut_num)
|
||
{
|
||
switch (ut_num) {
|
||
case 0 :
|
||
return !(JL_UART0->CON0 & BIT(0));
|
||
case 1 :
|
||
return !(JL_UART1->CON0 & BIT(0));
|
||
case 2:
|
||
return !(JL_UART2->CON0 & BIT(0));
|
||
default :
|
||
break;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static u8 uart_config(const struct uart_platform_data_t *arg, u8 tx_ch, enum PFI_TABLE rx_pfun)
|
||
{
|
||
if (!(arg->tx_pin < IO_PORT_MAX || arg->rx_pin < IO_PORT_MAX)) {
|
||
return -1;
|
||
}
|
||
|
||
if (arg->tx_pin < IO_PORT_MAX) {
|
||
gpio_direction_output(arg->tx_pin, 1);
|
||
gpio_set_fun_output_port(arg->tx_pin, tx_ch, 1, 1);
|
||
}
|
||
if (arg->rx_pin < IO_PORT_MAX) {
|
||
gpio_direction_input(arg->rx_pin);
|
||
gpio_set_pull_up(arg->rx_pin, 1);
|
||
gpio_set_die(arg->rx_pin, 1);
|
||
gpio_set_fun_input_port(arg->rx_pin, rx_pfun);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/**
|
||
* @brief ut模块初始const struct uart_platform_data_t *arg化函数，供外部调用
|
||
*
|
||
* @param arg 传入uartconst struct uart_platform_data_t *arg_argment型结构体指针
|
||
* @return 返回uart_buconst struct uart_platform_data_t *args_t型结构体指针
|
||
*/
|
||
__attribute__((noinline))
|
||
const uart_bus_t *uart_dev_open(const struct uart_platform_data_t *arg)
|
||
{
|
||
u8 ut_num;
|
||
uart_bus_t *ut = NULL;
|
||
u8 gpio_input_channle_flag = 0;
|
||
|
||
if (uart_is_idle(0)) {
|
||
ut_num = 0;
|
||
} else if (uart_is_idle(1)) {
|
||
ut_num = 1;
|
||
} else if ((uart_is_idle(2))) {
|
||
ut_num = 2;
|
||
} else {
|
||
return NULL;
|
||
}
|
||
if (arg->rx_cbuf) {
|
||
if ((arg->rx_cbuf_size == 0) || (arg->rx_cbuf_size & (arg->rx_cbuf_size - 1))) {
|
||
return NULL;
|
||
}
|
||
}
|
||
|
||
if (CONFIG_UART0_ENABLE && ut_num == 0) {
|
||
//gpio_set_uart0(ut_ch);
|
||
if (uart_config(arg, FO_UART0_TX, PFI_UART0_RX)) {
|
||
return NULL;
|
||
}
|
||
|
||
uart0.argv = arg->argv;
|
||
uart0.isr_cbfun = arg->isr_cbfun;
|
||
uart0.putbyte = UT0_putbyte;
|
||
uart0.getbyte = UT0_getbyte;
|
||
uart0.read = UT0_read_buf;
|
||
uart0.write = UT0_write_buf;
|
||
uart0.set_baud = UT0_set_baud;
|
||
UT0_open(arg->baud, arg->is_9bit,
|
||
arg->rx_cbuf, arg->rx_cbuf_size,
|
||
arg->frame_length, arg->rx_timeout);
|
||
ut = &uart0;
|
||
} else if (CONFIG_UART1_ENABLE && ut_num == 1) {
|
||
//gpio_set_uart1(ut_ch);
|
||
if (uart_config(arg, FO_UART1_TX, PFI_UART1_RX)) {
|
||
return NULL;
|
||
}
|
||
uart1.argv = arg->argv;
|
||
uart1.isr_cbfun = arg->isr_cbfun;
|
||
uart1.putbyte = UT1_putbyte;
|
||
uart1.getbyte = UT1_getbyte;
|
||
uart1.read = UT1_read_buf;
|
||
uart1.write = UT1_write_buf;
|
||
uart1.set_baud = UT1_set_baud;
|
||
uart1.get_data_len = uart1_get_data_len;
|
||
UT1_open(arg->baud, arg->is_9bit,
|
||
arg->rx_cbuf, arg->rx_cbuf_size,
|
||
arg->frame_length, arg->rx_timeout);
|
||
ut = &uart1;
|
||
} else if (CONFIG_UART2_ENABLE && ut_num == 2) {
|
||
//gpio_set_uart2(ut_ch);
|
||
if (uart_config(arg, FO_UART2_TX, PFI_UART2_RX)) {
|
||
return NULL;
|
||
}
|
||
uart2.argv = arg->argv;
|
||
uart2.isr_cbfun = arg->isr_cbfun;
|
||
uart2.putbyte = UT2_putbyte;
|
||
uart2.getbyte = UT2_getbyte;
|
||
uart2.read = UT2_read_buf;
|
||
uart2.write = UT2_write_buf;
|
||
uart2.set_baud = UT2_set_baud;
|
||
UT2_open(arg->baud, arg->is_9bit,
|
||
arg->rx_cbuf, arg->rx_cbuf_size,
|
||
arg->frame_length, arg->rx_timeout);
|
||
ut = &uart2;
|
||
} else {
|
||
return NULL;
|
||
}
|
||
return ut;
|
||
}
|
||
u32 uart_dev_close(uart_bus_t *ut)
|
||
{
|
||
UT_OSSemClose(&ut->sem_rx);
|
||
UT_OSSemClose(&ut->sem_tx);
|
||
if (&uart0 == ut) {
|
||
UT0_close();
|
||
return gpio_close_uart0();
|
||
} else if (&uart1 == ut) {
|
||
UT1_close();
|
||
return gpio_close_uart1();
|
||
} else {
|
||
UT2_close();
|
||
return gpio_close_uart2();
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
void uart_disable_for_ota()
|
||
{
|
||
JL_UART0->CON0 = BIT(13) | BIT(12) | BIT(10);
|
||
JL_UART1->CON0 = BIT(13) | BIT(12) | BIT(10);
|
||
JL_UART2->CON0 = BIT(13) | BIT(12) | BIT(10);
|
||
}
|
||
|
||
static u8 _rts_io = -1;
|
||
static u8 _cts_io = -1;
|
||
void uart1_flow_ctl_init(u8 rts_io, u8 cts_io)
|
||
{
|
||
JL_UART1->CON1 = 0;
|
||
//RTS
|
||
if (rts_io < IO_PORT_MAX) {
|
||
_rts_io = rts_io;
|
||
gpio_set_die(rts_io, 1);
|
||
gpio_set_direction(rts_io, 0);
|
||
gpio_set_pull_up(rts_io, 0);
|
||
gpio_set_pull_down(rts_io, 0);
|
||
gpio_write(rts_io, 0);
|
||
gpio_set_fun_output_port(rts_io, FO_UART1_RTS, 1, 1);
|
||
JL_UART1->CON1 |= BIT(13) | BIT(0);
|
||
}
|
||
//CTS
|
||
if (cts_io < IO_PORT_MAX) {
|
||
_cts_io = cts_io;
|
||
gpio_set_die(cts_io, 1);
|
||
gpio_set_direction(cts_io, 1);
|
||
gpio_set_pull_up(cts_io, 0);
|
||
gpio_set_pull_down(cts_io, 1);
|
||
gpio_set_fun_input_port(cts_io, PFI_UART1_CTS);
|
||
JL_UART1->CON1 |= BIT(14) | BIT(2);
|
||
}
|
||
}
|
||
|
||
void uart1_flow_ctl_rts_suspend(void) //忙碌，硬件停止接收
|
||
{
|
||
if (JL_UART1->CON1 & BIT(0)) {
|
||
JL_UART1->CON1 |= BIT(4); //RX_disable
|
||
JL_UART1->CON1 |= BIT(1); //RTS_DMAEN ///强制本地端RTS为高
|
||
}
|
||
|
||
/* if (!(JL_UART1->CON1 & BIT(0))) { */
|
||
/* gpio_write(_rts_io, 1); //告诉对方，自己忙碌 */
|
||
/* } */
|
||
/* JL_UART1->CON1 |= BIT(4); //硬件停止接收 */
|
||
}
|
||
|
||
void uart1_flow_ctl_rts_resume(void) //空闲，表示可以继续接收数据
|
||
{
|
||
if (JL_UART1->CON1 & BIT(0)) {
|
||
JL_UART1->CON1 &= ~BIT(4); //RX_enable
|
||
JL_UART1->CON1 &= ~BIT(1); //RTS_DMAEN ///RTS可以硬件拉低
|
||
}
|
||
|
||
/* JL_UART1->CON1 &= ~BIT(4); //硬件可以接收 */
|
||
/* if (JL_UART1->CON1 & BIT(0)) { */
|
||
/* JL_UART1->CON1 |= BIT(13); */
|
||
/* } else { */
|
||
/* gpio_write(_rts_io, 0); //表示可以继续接收数据 */
|
||
/* } */
|
||
}
|
||
|