143 lines
2.9 KiB
C
143 lines
2.9 KiB
C
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#include "includes.h"
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#include "app_config.h"
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#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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/* #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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注意
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timer1 现在定义优先级为6 ，关总中断不关闭该优先级，
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该中断里面使用函数 const 变量都必须定义在ram，否则会跑飞
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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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#if (TCFG_UI_LED1888_ENABLE || TCFG_UI_LED7_ENABLE)
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#define TCFG_USER_TIMER_ENABLE
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#endif
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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_TIMER2->CON
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#define TIMER_CNT JL_TIMER2->CNT
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#define TIMER_PRD JL_TIMER2->PRD
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#define TIMER_VETOR IRQ_TIME2_IDX
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#define TIMER_UNIT_MS 2 //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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extern void sputchar(char c);
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void (*timer_led_scan)(void *param);
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void app_timer_led_scan(void (*led_scan)(void *))
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{
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timer_led_scan = led_scan;
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}
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/////下面函数调用的使用函数都必须放在ram
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___interrupt
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AT_VOLATILE_RAM_CODE
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static void timer2_isr()
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{
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static u32 cnt1 = 0;
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TIMER_CON |= BIT(14);
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++cnt1;
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if (timer_led_scan) {
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timer_led_scan(NULL);
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}
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if (cnt1 == 500) { //500ms
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/* sputchar('!'); */
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cnt1 = 0;
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}
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}
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int timer2_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, timer2_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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__initcall(timer2_init);
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#endif
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