160 lines
3.4 KiB
C
160 lines
3.4 KiB
C
#include "include.h"
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/**
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* @brief 寄存器CON
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**/
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static const volatile uint32_t *TIMER_N_CON[HW_TIMER_MAX] = {
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&TMR1CON, &TMR2CON, &TMR3CON, &TMR4CON
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};
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static const int TIMER_N_VECTOR[HW_TIMER_MAX] = {
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IRQ_TMR1_VECTOR, IRQ_TMR2_VECTOR, IRQ_TMR3_VECTOR, IRQ_TMR4_VECTOR
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};
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static hw_timer_callback_t isr_cb[HW_TIMER_MAX];
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/**
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* @brief ISR
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**/
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AT(.com_text.isr)
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static void timer_isr_callback(void)
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{
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if(TMR1CON & BIT(9)){
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TMR1CPND = BIT(9);
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if(isr_cb[HW_TIMER1]){
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isr_cb[HW_TIMER1]();
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}
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}
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if(TMR2CON & BIT(9)){
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TMR2CPND = BIT(9);
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if(isr_cb[HW_TIMER2]){
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isr_cb[HW_TIMER2]();
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}
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}
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if(TMR3CON & BIT(9)){
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TMR3CPND = BIT(9);
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if(isr_cb[HW_TIMER3]){
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isr_cb[HW_TIMER3]();
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}
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}
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if(TMR4CON & BIT(9)){
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TMR4CPND = BIT(9);
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if(isr_cb[HW_TIMER4]){
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isr_cb[HW_TIMER4]();
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}
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}
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}
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/**
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* @brief 设置硬件定时器
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* @param[in] t_id 选择硬件定时器
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* @param[in] delay us为单位
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* @param[in] callback 中断回调
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*
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* @return 返回是否成功
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**/
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bool bsp_hw_timer_set(hw_timer_mode t_id, uint32_t delay, hw_timer_callback_t callback)
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{
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volatile uint32_t *timer_con, *timer_cpnd, *timer_cnt, *timer_pr;
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int vector;
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if((t_id >= HW_TIMER_MAX) || (delay == 0)) {
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return false;
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}
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if((u32)callback >= 0x10000000){
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// printf("hw_timer_set ERR : callback function in flash\n");
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return false;
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}
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vector = TIMER_N_VECTOR[t_id];
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timer_con = (void *)TIMER_N_CON[t_id];
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timer_cpnd = (void *)TIMER_N_CON[t_id] + 4;
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timer_cnt = (void *)TIMER_N_CON[t_id] + 8;
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timer_pr = (void *)TIMER_N_CON[t_id] + 12;
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if(t_id <= HW_TIMER2){
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CLKGAT0 |= BIT(24+t_id);
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}else{
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CLKGAT1 |= BIT(18+t_id-2);
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}
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*timer_con = 0;
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PICPR &= ~BIT(vector);
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PICEN |= BIT(vector);
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register_isr(vector, timer_isr_callback);
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isr_cb[t_id]= callback;
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*timer_cnt = 0;
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*timer_pr = 13 * delay - 1;
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*timer_cpnd = BIT(9) | BIT(10) | BIT(12);
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*timer_con = BIT(7) | (1<<4) | (2<<1) | BIT(0); // xosc26_div2
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return true;
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}
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/**
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* @brief 删除硬件定时器
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* @param[in] t_id 选择硬件定时器
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*
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* @return 返回是否成功
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**/
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bool bsp_hw_timer_del(hw_timer_mode t_id)
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{
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uint32_t *timer_con;
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int vector;
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if(t_id >= HW_TIMER_MAX) {
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return false;
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}
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vector = TIMER_N_VECTOR[t_id];
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timer_con = (void *)TIMER_N_CON[t_id];
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PICEN &= ~BIT(vector);
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*timer_con = 0x00; // xosc26_div2
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return true;
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}
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//------------------------------------------------------------------------------------------
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//用于测试运行时间函数 us为单位
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//使用TIME3
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/**
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* @brief 定时器初始化，可以用于测试代码运行时间
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*
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* @param[in] void
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*
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* @return void
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**/
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void cc_time_init(void)
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{
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CLKGAT1 |= BIT(18); //timer3 clkgat
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TMR3CON = 0;
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TMR3CNT = 0;
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TMR3PR = -1;
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TMR3CON = BIT(0) | BIT(2) | BIT(4); //Timer RC2M div2
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}
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/**
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* @brief 获取时间 us为单位
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* 注:休眠模式下测试不准确
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* @param[in] void
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*
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* @return 返回us时间
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**/
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u32 cc_time_count(void)
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{
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return TMR3CNT/13;
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}
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