使用ptmr产生1S定时器，在定时器内让PTC2和PTC3交叉输出PWM(20KHZ，占空比20%)和高电平，程序出现卡死

ryw3509

static void Board_Init(void)
{
Clock_Sys_Init();
Pins_Drv_Init();
Uart_Print_Init();
ADC_DMA_Init();
Ptmr_Drv_Init();
}

void Ptmr_Drv_Init(void)
{
pTMR_DRV_Init(pTMR0_INST,&PTMR_Config);
pTMR_DRV_InitChannel(pTMR0_INST,pTMR0_CH0,&ptmr_channel_0);
pTMR_DRV_InitChannel(pTMR0_INST,pTMR0_CH1,&ptmr_channel_1);
pTMR_DRV_InitChannel(pTMR0_INST,pTMR0_CH2,&ptmr_channel_2);
pTMR_DRV_InitChannel(pTMR0_INST,pTMR0_CH3,&ptmr_channel_3);
INT_SYS_EnableIRQ(pTMR0_IRQn);

INT_SYS_InstallHandler(pTMR0_IRQn, ptmr0_interrupt_isr, NULL);
pTMR_DRV_StartTimerChannels(pTMR0_INST, pTMR0_CH0);
pTMR_DRV_StartTimerChannels(pTMR0_INST, pTMR0_CH1);
pTMR_DRV_StartTimerChannels(pTMR0_INST, pTMR0_CH2);
pTMR_DRV_StartTimerChannels(pTMR0_INST, pTMR0_CH3);

}

void ptmr0_interrupt_isr(void)
{
if (pTMR_DRV_GetInterruptFlagTimerChannels(pTMR0_INST, pTMR0_CH0))
{
pTMR_DRV_ClearInterruptFlagTimerChannels(pTMR0_INST, pTMR0_CH0);
PRINTF("pTMR CH0 ISR\n");
PMM_Mode_IN1();
}

void PMM_Mode_IN1(void)//IN1 PWM mode
{
//引脚初始化
PRINTF("main_motor_forward_PMM_Mode_IN1 start\n");
g_pin_mux_InitConfigArr0[10].base = PCTRLC;
g_pin_mux_InitConfigArr0[10].pinPortIdx = 2U;
g_pin_mux_InitConfigArr0[10].pullConfig = PCTRL_INTERNAL_PULL_NOT_ENABLED;
g_pin_mux_InitConfigArr0[10].driveSelect = PCTRL_LOW_DRIVE_STRENGTH;
g_pin_mux_InitConfigArr0[10].passiveFilter = false;
g_pin_mux_InitConfigArr0[10].mux = PCTRL_MUX_ALT2;
g_pin_mux_InitConfigArr0[10].direction = GPIO_INPUT_DIRECTION;
g_pin_mux_InitConfigArr0[10].intConfig = PCTRL_DMA_INT_DISABLED;
g_pin_mux_InitConfigArr0[10].rateSelect = PCTRL_FAST_SLEW_RATE;
g_pin_mux_InitConfigArr0[10].clearIntFlag = false;
g_pin_mux_InitConfigArr0[10].digitalFilter = false;
g_pin_mux_InitConfigArr0[10].filterConfig.width = 0;
g_pin_mux_InitConfigArr0[10].gpioBase = GPIOC;
g_pin_mux_InitConfigArr0[10].direction = GPIO_INPUT_DIRECTION;
g_pin_mux_InitConfigArr0[10].initValue=0;
PINS_Init(&g_pin_mux_InitConfigArr0[10]);
PRINTF("000 000\n");
g_pin_mux_InitConfigArr0[11].base = PCTRLC;
g_pin_mux_InitConfigArr0[11].pinPortIdx = 3U;
g_pin_mux_InitConfigArr0[11].pullConfig = PCTRL_INTERNAL_PULL_NOT_ENABLED;
g_pin_mux_InitConfigArr0[11].driveSelect = PCTRL_LOW_DRIVE_STRENGTH;
g_pin_mux_InitConfigArr0[11].passiveFilter = false;
g_pin_mux_InitConfigArr0[11].mux = PCTRL_MUX_AS_GPIO;
g_pin_mux_InitConfigArr0[11].direction = GPIO_INPUT_DIRECTION;
g_pin_mux_InitConfigArr0[11].intConfig = PCTRL_DMA_INT_DISABLED;
g_pin_mux_InitConfigArr0[11].rateSelect = PCTRL_FAST_SLEW_RATE;
g_pin_mux_InitConfigArr0[11].clearIntFlag = false;
g_pin_mux_InitConfigArr0[11].digitalFilter = false;
g_pin_mux_InitConfigArr0[11].filterConfig.width = 0;
g_pin_mux_InitConfigArr0[11].gpioBase = GPIOC;
g_pin_mux_InitConfigArr0[11].direction = GPIO_OUTPUT_DIRECTION;
g_pin_mux_InitConfigArr0[11].initValue=0;
PINS_Init(&g_pin_mux_InitConfigArr0[11]);
PRINTF("111 111\n");
ETMR_PWM_Config0.pwmChannelConfig->hwChannelId = 2;
ETMR_PWM_Config0.pwmChannelConfig->polarity = eTMR_POLARITY_NORMAL;
ETMR_PWM_Config0.pwmChannelConfig->pwmSrcInvert = false;
ETMR_PWM_Config0.pwmChannelConfig->align = eTMR_PWM_RIGHT_EDGE_ALIGN;
ETMR_PWM_Config0.pwmChannelConfig->channelInitVal = 0;
ETMR_PWM_Config0.pwmChannelConfig->typeOfUpdate = eTMR_PWM_UPDATE_IN_DUTY_CYCLE;
ETMR_PWM_Config0.pwmChannelConfig->dutyCycle = 0x0000;
ETMR_PWM_Config0.pwmChannelConfig->offset = 0;
ETMR_PWM_Config0.pwmChannelConfig->enableSecondChannelOutput = false;
ETMR_PWM_Config0.pwmChannelConfig->secondChannelPolarity = eTMR_POLARITY_NORMAL;
PRINTF("222 222\n");
eTMR_DRV_Init(eTMR0_INST,&ETMR_CM_Config0,&ETMR_CM_Config0_State);
PRINTF("333 333\n");
eTMR_DRV_InitPwm(eTMR0_INST,&ETMR_PWM_Config0);```
PRINTF("444 444\n");
/* PWM is generated when eTMR enable, the duty cycle is configured in the initial function /
eTMR_DRV_Enable(eTMR0_INST);
OSIF_TimeDelay(10);
PRINTF("555 555\n");
/ The following code shows how to switch the different duty cycle /
/ channel 2 duty cycle is 20%(0x1000U)~80%(0x6666U) */
eTMR_DRV_UpdatePwmChannel(eTMR0_INST, 2, 0x1000U, 0);
eTMR_DRV_SetLdok(0);
OSIF_TimeDelay(10);
PRINTF("main_motor_forward_PMM_Mode_IN1 end\n");
}

测试LOG:
pTMR CH0 ISR
main_motor_forward_PMM_Mode_IN1 start
000 000
111 111
222 222
333 333
444 444

我这里要实现的控制逻辑：
在定时器1S内，前7S，PTC2输出PWM，PTC3输出高电平；接着5S，PTC2和PTC3全部输出高电平；再接着7S,PTC2输出高电平，PTC3输出PWM，再接着5S，PTC2和PTC3全部输出高电平，这样一个循环过程。

若是要实现这个过程，在1S定时任务就涉及到引脚初始化和PWM输出初始化，现在在定时器1S初始化PTC2输出PWM，PTC3输出高电平时，程序就出现了问题，请工程师协助分析下问题原因？谢谢~

Diga

你说的这个过程可以全程用 PWM 实现。例如0%占空比就是低电平，100%占空比就是高电平，你可以在你的定时器中断里去更新 PWM 的占空比与频率，就不用修改引脚配置了，Task 也会比较简单

ryw3509

Diga 你好！

按照你所述，我这里做了调整，现在遇到一个新的问题：
void Etmr_Drv_Init(void)
{
eTMR_DRV_Init(eTMR0_INST,&ETMR_CM_Config0,&ETMR_CM_Config0_State);
eTMR_DRV_InitPwm(eTMR0_INST,&ETMR_PWM_Config0);
/* PWM is generated when eTMR enable, the duty cycle is configured in the initial function */
eTMR_DRV_Enable(eTMR0_INST);
OSIF_TimeDelay(10);

/* The following code shows how to switch the different duty cycle */
/* channel 2 duty cycle is 20% */
eTMR_DRV_UpdatePwmChannel(eTMR0_INST, 2, 0x8000U, 0);
/* channel 3 duty cycle is 20% */
eTMR_DRV_UpdatePwmChannel(eTMR0_INST, 3, 0x8000U, 0);
eTMR_DRV_SetLdok(0);
OSIF_TimeDelay(10);

// PRINTF("CH2 output 20KHZ duty 20, CH3 output 20KHZ duty 20\n");
}
按照当前配置，正常应该是输出高电平，但是实测全部是低电平，将两路的0x8000U更改为0x0000U，输出的也是低电平，请问怎么回事啊？

谢谢~

ryw3509

eTMR_DRV_UpdatePwmChannel(eTMR0_INST, 2, 0x4000U, 0);
eTMR_DRV_UpdatePwmChannel(eTMR0_INST, 3, 0x8000U, 0);
按照这样的配置，2输出的占空比为50%，频率为20K的波形，但3输出的还是低电平。

Diga

此时输出别的占空比波形正确嘛？会不会引脚的PINMUX被修改了，或者引脚接错了

ryw3509

Diga 经过实测，只要不是0x8000U和0x0000U，输出的波形都是正常的。

qinzhao

0x8000是100%占空比，0是0%占空比。极性反了就相反

Diga

这个是因为 YTM32B1LE0 无法通过 SDK 直接输出 100%占空比，设置 0x0 or 0x8000 都是0%PWM。
云途有个相关 Errata，里面有介绍如何真正输出 100% PWM，可以向云途的 FAE或销售咨询获取

ryw3509

Diga 参考了例程，里面有这样的说明：
/* The following code shows how to switch the different duty cycle /
/ channel 2 duty cycle is 50% /
eTMR_DRV_UpdatePwmChannel(0, 2, 0x4000U, 0);
/ channel 3 duty cycle is 50% */
eTMR_DRV_UpdatePwmChannel(0, 3, 0x4000U, 0);
eTMR_DRV_SetLdok(0);
OSIF_TimeDelay(10);

**/* channel 2 100% duty cycle, here is the workaround for 100% duty cycle */
eTMR0->CH[2].VAL0 = 0;
eTMR0->CH[2].VAL1 = eTMR0->MOD + 1;
eTMR_DRV_SetLdok(0);
OSIF_TimeDelay(10);**

按照这样的配置，通道2输出的是100%占空比，也就是高电平了。
通道3是50%占空比。

ryw3509

留存记录：
卡死原因：在定时器内加入了延时导致。

Diga

ryw3509 OSIF_TimeDelay() 延时是通过 Systick 来计数的，通常 Systick 优先级设置成比模块中断低或者相等。如果在模块中断中调用该函数，由于Systick 无法抢占当前中断，内部的一个 Counter 计数不会变化，这个函数会死等，也就是卡死。

YunTu Forum

使用ptmr产生1S定时器，在定时器内让PTC2和PTC3交叉输出PWM(20KHZ，占空比20%)和高电平，程序出现卡死

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