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AC63_BT_SDK/cpu/br34/uart_dev.c

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原始文件
2025-02-18 15:40:42 +08:00
/**
* @file uart.c
* @author JL
* @brief 串口UART模块C文件
* @version 1.2
* @date 2018-11-22
*/
#include "asm/clock.h"
#include "asm/uart_dev.h"
#include "asm/cpu.h"
#include "generic/gpio.h"
#include "spinlock.h"
#ifdef SUPPORT_MS_EXTENSIONS
#pragma bss_seg(".uart_bss")
#pragma data_seg(".uart_data")
#pragma const_seg(".uart_const")
#pragma code_seg(".uart_code")
#endif
#define UART_CLK clk_get("uart")
#define UART_OT_CLK clk_get("lsb")
static uart_bus_t uart0;
static uart_bus_t uart1;
static uart_bus_t uart2;
/* _WEAK_ */
/* extern */
const u32 CONFIG_UART0_ENABLE = 1;
/* _WEAK_ */
/* extern */
const u32 CONFIG_UART1_ENABLE = 1;
/* _WEAK_ */
/* extern */
const u32 CONFIG_UART2_ENABLE = 1;
/* _WEAK_ */
/* extern */
const u32 CONFIG_UART0_ENABLE_TX_DMA = 1;
/* _WEAK_ */
/* extern */
const u32 CONFIG_UART1_ENABLE_TX_DMA = 1;
/* _WEAK_ */
/* extern */
const u32 CONFIG_UART2_ENABLE_TX_DMA = 1;
static u32 kfifo_get(KFIFO *kfifo, u8 *buffer, u32 len)
{
unsigned int i;
len = MIN(len, kfifo->buf_in - kfifo->buf_out);
i = MIN(len, kfifo->buf_size - (kfifo->buf_out & (kfifo->buf_size - 1)));
memcpy(buffer, kfifo->buffer + (kfifo->buf_out & (kfifo->buf_size - 1)), i);
memcpy(buffer + i, kfifo->buffer, len - i);
kfifo->buf_out += len;
return len;
}
static u32 kfifo_length(KFIFO *kfifo)
{
return kfifo->buf_in - kfifo->buf_out;
}
/**
* @brief ut0发送一个byte
*
* @param a 要发送的字节
*/
static void UT0_putbyte(char a)
{
if (JL_UART0->CON0 & BIT(0)) {
JL_UART0->BUF = a;
__asm__ volatile("csync");
while ((JL_UART0->CON0 & BIT(15)) == 0);
JL_UART0->CON0 |= BIT(13);
}
}
/**
* @brief ut0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 UT0_getbyte(u8 *buf, u32 timeout)
{
u32 _timeout, _t_sleep;
timeout = ut_msecs_to_jiffies(timeout);
if (JL_UART0->CON0 & BIT(6)) {
//DMA_MODE
if (!kfifo_length(&uart0.kfifo)) {
UT_OSSemPend(&uart0.sem_rx, timeout);
}
UT_OSSemSet(&uart0.sem_rx, 0);
return kfifo_get(&uart0.kfifo, buf, 1);
} else {
_timeout = timeout + ut_get_jiffies();
_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
while (!(JL_UART0->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_UART0->BUF;
JL_UART0->CON0 |= BIT(12);
__asm__ volatile("csync"); //make RX_PND_CLR taking effect
}
return 1;
}
/**
* @brief ut0中断函数
*/
SET_INTERRUPT
static void UT0_isr_fun(void)
{
u32 rx_len = 0;
if ((JL_UART0->CON0 & BIT(2)) && (JL_UART0->CON0 & BIT(15))) {
JL_UART0->CON0 |= BIT(13);
UT_OSSemPost(&uart0.sem_tx);
if (uart0.isr_cbfun) {
uart0.isr_cbfun(&uart0, UT_TX);
}
}
if ((JL_UART0->CON0 & BIT(3)) && (JL_UART0->CON0 & BIT(14))) {
JL_UART0->CON0 |= BIT(7); //DMA模式
JL_UART0->CON0 |= BIT(12); //清RX PND
rx_len = JL_UART0->HRXCNT; //读当前串口接收数据的个数
/* uart0.kfifo.buf_in += uart0.frame_length; //每满frame_length字节则产生一次中断 */
uart0.kfifo.buf_in += rx_len;
UT_OSSemPost(&uart0.sem_rx);
if (uart0.isr_cbfun) {
uart0.isr_cbfun(&uart0, UT_RX);
}
}
if ((JL_UART0->CON0 & BIT(5)) && (JL_UART0->CON0 & BIT(11))) {
//OTCNT PND
JL_UART0->CON0 |= BIT(7); //DMA模式
JL_UART0->CON0 |= BIT(10); //清OTCNT PND
JL_UART0->CON0 |= BIT(12); //清RX PND(这里的顺序不能改变，这里要清一次)
rx_len = JL_UART0->HRXCNT; //读当前串口接收数据的个数
if (rx_len) {
uart0.kfifo.buf_in += rx_len;
/* printf("%s() %d\n", __func__, __LINE__); */
UT_OSSemPost(&uart0.sem_rx);
if (uart0.isr_cbfun) {
uart0.isr_cbfun(&uart0, UT_RX_OT);
}
}
}
}
/**
* @brief ut0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 返回实际接收长度
*/
static u32 UT0_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_UART0->CON0 & BIT(6)) {
if (!kfifo_length(&uart0.kfifo)) {
UT_OSSemPend(&uart0.sem_rx, timeout);
}
UT_OSSemSet(&uart0.sem_rx, 0);
return kfifo_get(&uart0.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_UART0->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_UART0->BUF;
JL_UART0->CON0 |= BIT(12);
__asm__ volatile("csync"); //make RX_PND_CLR taking effect
}
}
return len;
}
/**
* @brief ut0发送字符串
*
* @param buf 字符串首地址
* @param len 发送的字符串长度
*/
static void UT0_write_buf(const u8 *buf, u32 len)
{
u32 i;
if (len == 0) {
return;
}
if (CONFIG_UART0_ENABLE_TX_DMA) {
UT_OSSemSet(&uart0.sem_tx, 0);
JL_UART0->CON0 |= BIT(13);
JL_UART0->CON0 |= BIT(2);
JL_UART0->TXADR = (u32)buf;
JL_UART0->TXCNT = len;
UT_OSSemPend(&uart0.sem_tx, 0);
JL_UART0->CON0 &= ~BIT(2);
} else {
for (i = 0; i < len; i ++) {
UT0_putbyte(*(buf + i));
}
}
}
/**
* @brief ut0配置波特率
*
* @param baud 波特率值
*/
static void UT0_set_baud(u32 baud)
{
JL_UART0->CON0 &= ~(BIT(0) | BIT(1));
JL_UART0->CON0 |= BIT(13) | BIT(12) | BIT(10);
JL_UART0->BAUD = ((UART_CLK + baud / 2) / baud) / 4 - 1;
if (JL_UART0->CON0 & BIT(5)) {
if (uart0.rx_timeout > 10) {
JL_UART0->OTCNT = (uart0.rx_timeout / 10) * (UART_OT_CLK / 10) / 10;
} else {
JL_UART0->OTCNT = uart0.rx_timeout * UART_OT_CLK / 1000;
}
}
JL_UART0->CON0 |= BIT(13) | BIT(12) | BIT(10) | BIT(0) | BIT(1);
}
/**
*获取串口数据长度
*/
static u32 uart1_get_data_len()
{
return kfifo_length(&uart1.kfifo);
}
/**
* @brief ut0使能
*/
static void UT0_open(u32 baud, u32 is_9bit, void *cbuf, u32 cbuf_size, u32 rx_cnt, u32 ot)
{
JL_UART0->CON0 = BIT(13) | BIT(12) | BIT(10);
UT_OSSemCreate(&uart0.sem_rx, 0);
UT_OSSemCreate(&uart0.sem_tx, 0);
request_irq(IRQ_UART0_IDX, 3, UT0_isr_fun, 0);
if (cbuf) {
uart0.kfifo.buffer = cbuf;
uart0.kfifo.buf_size = cbuf_size;
uart0.kfifo.buf_in = 0;
uart0.kfifo.buf_out = 0;
uart0.frame_length = rx_cnt;
uart0.rx_timeout = ot;
JL_UART0->RXSADR = (u32)uart0.kfifo.buffer;
JL_UART0->RXEADR = (u32)(uart0.kfifo.buffer + uart0.kfifo.buf_size);
JL_UART0->RXCNT = uart0.frame_length;
JL_UART0->CON0 |= BIT(6) | BIT(5) | BIT(3);
}
if (is_9bit) {
JL_UART0->CON2 |= BIT(0);
} else {
JL_UART0->CON2 &= ~BIT(0);
}
UT0_set_baud(baud);
}
/**
* @brief ut0关闭，注销
*/
static void UT0_close(void)
{
UT_OSSemClose(&uart0.sem_rx);
UT_OSSemClose(&uart0.sem_tx);
irq_disable(IRQ_UART0_IDX);
JL_UART0->CON0 = BIT(13) | BIT(12) | BIT(10);
}
/**
* @brief ut1发送一个byte
*
* @param a 要发送的字节
*/
static void UT1_putbyte(char a)
{
if (JL_UART1->CON0 & BIT(0)) {
JL_UART1->BUF = a;
__asm__ volatile("csync");
while ((JL_UART1->CON0 & BIT(15)) == 0);
JL_UART1->CON0 |= BIT(13);
}
}
/**
* @brief ut1接收一个byte
*
* @param buf 字节存放地址
* @param timeout 接收超时时间，单位1ms
10ms¥；返回1：接收成功
*/
static u8 UT1_getbyte(u8 *buf, u32 timeout)
{
u32 _timeout, _t_sleep;
timeout = ut_msecs_to_jiffies(timeout);
if (JL_UART1->CON0 & BIT(6)) {
if (!kfifo_length(&uart1.kfifo)) {
UT_OSSemPend(&uart1.sem_rx, timeout);
}
UT_OSSemSet(&uart1.sem_rx, 0);
return kfifo_get(&uart1.kfifo, buf, 1);
} else {
_timeout = timeout + ut_get_jiffies();
_t_sleep = ut_msecs_to_jiffies(10) + ut_get_jiffies();
while (!(JL_UART1->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_UART1->BUF;
JL_UART1->CON0 |= BIT(12);
__asm__ volatile("csync"); //make RX_PND_CLR taking effect
}
return 1;
}
/**
* @brief ut1中断函数
*/
SET_INTERRUPT
static void UT1_isr_fun(void)
{
u32 rx_len = 0;
if ((JL_UART1->CON0 & BIT(2)) && (JL_UART1->CON0 & BIT(15))) {
JL_UART1->CON0 |= BIT(13);
UT_OSSemPost(&uart1.sem_tx);
if (uart1.isr_cbfun) {
uart1.isr_cbfun(&uart1, UT_TX);
}
}
if ((JL_UART1->CON0 & BIT(3)) && (JL_UART1->CON0 & BIT(14))) {
JL_UART1->CON0 |= BIT(7); //DMA模式
JL_UART1->CON0 |= BIT(12); //清RX PND
rx_len = JL_UART1->HRXCNT; //读当前串口接收数据的个数
/* uart1.kfifo.buf_in += uart1.frame_length; //每满32字节则产生一次中断 */
uart1.kfifo.buf_in += rx_len;
UT_OSSemPost(&uart1.sem_rx);
if (uart1.isr_cbfun) {
uart1.isr_cbfun(&uart1, UT_RX);
}
}
if ((JL_UART1->CON0 & BIT(5)) && (JL_UART1->CON0 & BIT(11))) {
//OTCNT PND
JL_UART1->CON0 |= BIT(7); //DMA模式
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
if (rx_len) {
uart1.kfifo.buf_in += rx_len;
/* printf("%s() %d\n", __func__, __LINE__); */
UT_OSSemPost(&uart1.sem_rx);
if (uart1.isr_cbfun) {
uart1.isr_cbfun(&uart1, 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 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);
}
UT_OSSemSet(&uart1.sem_rx, 0);
return kfifo_get(&uart1.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_UART1->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_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)
{
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)
{
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
}
}
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