146 lines
2.9 KiB
C
146 lines
2.9 KiB
C
#include "asm/cpu.h"
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#include "asm/irq.h"
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#include "asm/clock.h"
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#include "system/timer.h"
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#include "system/init.h"
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#include "gpio.h"
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#include "asm/power_interface.h"
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/* #define LOG_TAG_CONST TMR */
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/* #define LOG_TAG "[USER_TMR]" */
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/* #define LOG_INFO_ENABLE */
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/* #define LOG_DUMP_ENABLE */
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/* #define LOG_ERROR_ENABLE */
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/* #define LOG_DEBUG_ENABLE */
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#include "debug.h"
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/*
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*
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*/
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//注意：改定时器会被低功耗使用到，使用时需要关闭低功耗
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/* #define TCFG_USER_TIMER_ENABLE */
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#ifdef TCFG_USER_TIMER_ENABLE
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struct timer_hdl {
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int index;
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int prd;
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};
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static struct timer_hdl hdl;
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#define __this (&hdl)
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static const u32 timer_div[] = {
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/*0000*/ 1,
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/*0001*/ 4,
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/*0010*/ 16,
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/*0011*/ 64,
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/*0100*/ 2,
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/*0101*/ 8,
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/*0110*/ 32,
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/*0111*/ 128,
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/*1000*/ 256,
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/*1001*/ 4 * 256,
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/*1010*/ 16 * 256,
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/*1011*/ 64 * 256,
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/*1100*/ 2 * 256,
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/*1101*/ 8 * 256,
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/*1110*/ 32 * 256,
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/*1111*/ 128 * 256,
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};
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#define APP_TIMER_CLK clk_get("timer")
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#define MAX_TIME_CNT 0x7fff
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#define MIN_TIME_CNT 0x100
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#define TIMER_CON JL_TIMER0->CON
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#define TIMER_CNT JL_TIMER0->CNT
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#define TIMER_PRD JL_TIMER0->PRD
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#define TIMER_VETOR IRQ_TIME0_IDX
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#define TIMER_UNIT_MS 1 //1ms起一次中断
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#define MAX_TIMER_PERIOD_MS (1000/TIMER_UNIT_MS)
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/*-----------------------------------------------------------*/
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static volatile u32 delay_cnt = 0;
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void user_delay_nms(int cnt)
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{
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delay_cnt = cnt;
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while (delay_cnt);
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}
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static u8 io_status = 0;
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void __attribute__((weak)) timer_1ms_handler()
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{
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/* putchar('a'); */
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if (io_status) {
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gpio_direction_output(IO_PORTA_06, 1);
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io_status = 0;
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} else {
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gpio_direction_output(IO_PORTA_06, 0);
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io_status = 1;
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}
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}
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___interrupt
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static void timer0_isr()
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{
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static u32 cnt1 = 0;
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// irq_handler_enter(TIME1_INT);
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TIMER_CON |= BIT(14);
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++cnt1;
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timer_1ms_handler();
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if (delay_cnt) {
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delay_cnt--;
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}
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if (!(cnt1 % 5)) { //5ms
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/* r_printf("a"); */
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}
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if (cnt1 == 500) { //500ms
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/* putchar('!'); */
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cnt1 = 0;
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}
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// irq_handler_exit(TIME1_INT);
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}
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int timer0_init()
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{
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u32 prd_cnt;
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u8 index;
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printf("%s :%d", __func__, __LINE__);
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for (index = 0; index < (sizeof(timer_div) / sizeof(timer_div[0])); index++) {
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prd_cnt = TIMER_UNIT_MS * (APP_TIMER_CLK / 1000) / timer_div[index];
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if (prd_cnt > MIN_TIME_CNT && prd_cnt < MAX_TIME_CNT) {
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break;
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}
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}
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__this->index = index;
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__this->prd = prd_cnt;
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TIMER_CNT = 0;
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TIMER_PRD = prd_cnt; //1ms
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request_irq(TIMER_VETOR, 1, timer0_isr, 0);
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TIMER_CON = (index << 4) | BIT(0) | BIT(3);
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printf("PRD : 0x%x / %d", TIMER_PRD, clk_get("timer"));
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return 0;
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}
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#endif
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