STM8四路PWM配置
void pwm_color_init(void)
{
// uint16 v;
volatile uint8 c;
/*datasheet 44,opt2 Port C5 alternate function = TIM2_CH1; port C6
alternate function = TIM1_CH1; port C7 alternate function = TIM1_CH2.*/
/*
v = FLASH_ReadOptionByte(0x4803);
c =(uint8)( v >> 8);
if(0 == (0x01 & c))
{
c |= 1;
FLASH_Unlock(FLASH_MEMTYPE_DATA);
FLASH_ProgramOptionByte(0x4803, c);
FLASH_Lock(FLASH_MEMTYPE_DATA);
}
*/
GPIO_Init(GPIOC, GPIO_PIN_1, GPIO_MODE_OUT_PP_LOW_SLOW);
GPIO_Init(GPIOC, GPIO_PIN_2, GPIO_MODE_OUT_PP_LOW_SLOW);
GPIO_Init(GPIOC, GPIO_PIN_3, GPIO_MODE_OUT_PP_LOW_SLOW);
GPIO_Init(GPIOC, GPIO_PIN_4, GPIO_MODE_OUT_PP_LOW_SLOW);//bin添加
c = PWRON_PSR;
TIM1_DeInit();
TIM1_TimeBaseInit(0, TIM1_COUNTERMODE_UP, TIM_CLK_FREQUENCY / PWM_BULK_CLK, 0);
/* PWM mode 2 - In up-counting, channel 1 is inactive as long as TIM1_CNT < TIM1_CCR1,
otherwise, the channel is active. */
/* NOTE chn1 is used pwm2 mode , so the current will be more average!!*/
TIM1_OC4Init(TIM1_OCMODE_PWM2, TIM1_OUTPUTSTATE_ENABLE,
(TIM_CLK_FREQUENCY / PWM_BULK_CLK / 100) * (100 - c),
TIM1_OCNPOLARITY_LOW, TIM1_OCIDLESTATE_RESET); //bin添加
TIM1_OC3Init(TIM1_OCMODE_PWM2, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_DISABLE,
(TIM_CLK_FREQUENCY / PWM_BULK_CLK / 100) * (100 - c),
TIM1_OCPOLARITY_LOW, TIM1_OCNPOLARITY_LOW,
TIM1_OCIDLESTATE_RESET, TIM1_OCNIDLESTATE_RESET);
TIM1_OC2Init(TIM1_OCMODE_PWM1, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_DISABLE,
(TIM_CLK_FREQUENCY / PWM_BULK_CLK / 100) * c,
TIM1_OCPOLARITY_LOW, TIM1_OCNPOLARITY_LOW,
TIM1_OCIDLESTATE_RESET, TIM1_OCNIDLESTATE_RESET);
TIM1_OC1Init(TIM1_OCMODE_PWM1, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_DISABLE,
(TIM_CLK_FREQUENCY / PWM_BULK_CLK / 100) * c,
TIM1_OCPOLARITY_LOW, TIM1_OCNPOLARITY_LOW,
TIM1_OCIDLESTATE_RESET, TIM1_OCNIDLESTATE_RESET);
/* TIM1 counter enable */
TIM1_Cmd(ENABLE);
/* TIM1 Main Output Enable */
TIM1_CtrlPWMOutputs(ENABLE);
}
修改stm8s_time.c
#if 0
void TIM1_OC4Init(TIM1_OCMode_TypeDef TIM1_OCMode,
TIM1_OutputState_TypeDef TIM1_OutputState,
uint16_t TIM1_Pulse,
TIM1_OCPolarity_TypeDef TIM1_OCPolarity,
TIM1_OCIdleState_TypeDef TIM1_OCIdleState)
{
/* Check the parameters */
assert_param(IS_TIM1_OC_MODE_OK(TIM1_OCMode));
assert_param(IS_TIM1_OUTPUT_STATE_OK(TIM1_OutputState));
assert_param(IS_TIM1_OC_POLARITY_OK(TIM1_OCPolarity));
assert_param(IS_TIM1_OCIDLE_STATE_OK(TIM1_OCIdleState));
/* Disable the Channel 4: Reset the CCE Bit */
TIM1->CCER2 &= (uint8_t)(~(TIM1_CCER2_CC4E | TIM1_CCER2_CC4P));
/* Set the Output State & the Output Polarity */
TIM1->CCER2 |= (uint8_t)((uint8_t)(TIM1_OutputState & TIM1_CCER2_CC4E ) |
(uint8_t)(TIM1_OCPolarity & TIM1_CCER2_CC4P ));
/* Reset the Output Compare Bit and Set the Output Compare Mode */
TIM1->CCMR4 = (uint8_t)((uint8_t)(TIM1->CCMR4 & (uint8_t)(~TIM1_CCMR_OCM)) |
TIM1_OCMode);
/* Set the Output Idle state */
if (TIM1_OCIdleState != TIM1_OCIDLESTATE_RESET)
{
TIM1->OISR |= (uint8_t)(~TIM1_CCER2_CC4P);
}
else
{
TIM1->OISR &= (uint8_t)(~TIM1_OISR_OIS4);
}
/* Set the Pulse value */
TIM1->CCR4H = (uint8_t)(TIM1_Pulse >> 8);
TIM1->CCR4L = (uint8_t)(TIM1_Pulse);
}
#endif
void pwm_color_adjust(uint8 chn, uint8 prescaler)
{
if (prescaler > 100) prescaler = 100;
TIM1_Cmd(DISABLE);
if( 0x01 == chn)
{//red
TIM1_SetCompare3(TIM_CLK_FREQUENCY / PWM_BULK_CLK / 100 * (100 - prescaler));
}
else
if( 0x02 == chn)
{//green
TIM1_SetCompare2(TIM_CLK_FREQUENCY / PWM_BULK_CLK / 100 * prescaler);
}
else
if( 0x03 == chn)
{//blue
TIM1_SetCompare1(TIM_CLK_FREQUENCY / PWM_BULK_CLK / 100 * prescaler);
}
else
if( 0x04 == chn)//bin添加
{
TIM1_SetCompare4(TIM_CLK_FREQUENCY / PWM_BULK_CLK / 100 * prescaler);
}
TIM1_Cmd(ENABLE);
TIM1_CtrlPWMOutputs(ENABLE);
}
Stm8s_time1.c
#if 0
void TIM1_SetCompare4(u16 Compare4)
{
/* Set the Capture Compare4 Register value */
TIM1->CCR4H = (u8)(Compare4 >> 8);
TIM1->CCR4L = (u8)(Compare4);
}
#endif