mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
Diff: targets/hal/TARGET_STM/TARGET_DISCO_F407VG/pwmout_api.c
- Revision:
- 242:7074e42da0b2
- Parent:
- 227:7bd0639b8911
- Child:
- 250:a49055e7a707
diff -r ffe41b0c8126 -r 7074e42da0b2 targets/hal/TARGET_STM/TARGET_DISCO_F407VG/pwmout_api.c --- a/targets/hal/TARGET_STM/TARGET_DISCO_F407VG/pwmout_api.c Thu Jun 26 10:30:09 2014 +0100 +++ b/targets/hal/TARGET_STM/TARGET_DISCO_F407VG/pwmout_api.c Fri Jun 27 07:30:09 2014 +0100 @@ -27,30 +27,30 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ******************************************************************************* */ -#include "mbed_assert.h" #include "pwmout_api.h" +#if DEVICE_PWMOUT + #include "cmsis.h" #include "pinmap.h" #include "error.h" -#include "stm32f4xx_hal.h" // TIM5 cannot be used because already used by the us_ticker static const PinMap PinMap_PWM[] = { {PA_0, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH1 - //{PA_0, PWM_5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5)}, // TIM5_CH1 +// {PA_0, PWM_5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5)}, // TIM5_CH1 {PA_1, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH2 - //{PA_1, PWM_5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5)}, // TIM5_CH2 +// {PA_1, PWM_5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5)}, // TIM5_CH2 {PA_2, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH3 - //{PA_2, PWM_5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5)}, // TIM5_CH3 - //{PA_2, PWM_9, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM9)}, // TIM9_CH1 +// {PA_2, PWM_5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5)}, // TIM5_CH3 +// {PA_2, PWM_9, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM9)}, // TIM9_CH1 {PA_3, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH4 - //{PA_3, PWM_5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5)}, // TIM5_CH4 - //{PA_3, PWM_9, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM9)}, // TIM9_CH2 +// {PA_3, PWM_5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5)}, // TIM5_CH4 +// {PA_3, PWM_9, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM9)}, // TIM9_CH2 {PA_5, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH1 {PA_6, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH1 {PA_7, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1)}, // TIM1_CH1N - //{PA_7, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH2 +// {PA_7, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH2 {PA_8, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1)}, // TIM1_CH1 {PA_9, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1)}, // TIM1_CH2 {PA_10, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1)}, // TIM1_CH3 @@ -58,18 +58,18 @@ {PA_15, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH1 {PB_0, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1)}, // TIM1_CH2N - //{PB_0, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH3 +// {PB_0, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH3 {PB_1, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1)}, // TIM1_CH3N - //{PB_1, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH4 +// {PB_1, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH4 {PB_3, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH2 {PB_4, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH1 {PB_5, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH2 {PB_6, PWM_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4)}, // TIM4_CH1 {PB_7, PWM_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4)}, // TIM4_CH2 {PB_8, PWM_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4)}, // TIM4_CH3 - //{PB_8, PWM_10,STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM10)}, // TIM10_CH1 +// {PB_8, PWM_10,STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM10)}, // TIM10_CH1 {PB_9, PWM_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4)}, // TIM4_CH4 - //{PB_9, PWM_11,STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM11)}, // TIM11_CH1 +// {PB_9, PWM_11,STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM11)}, // TIM11_CH1 {PB_10, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH3 {PB_13, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1)}, // TIM1_CH1N {PB_14, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1)}, // TIM1_CH2N @@ -84,20 +84,50 @@ }; static TIM_HandleTypeDef TimHandle; +static uint8_t ClockDivider; +/* 0, 1, 2, 3, 4, 5, 6, 7 */ +const uint8_t APBxPrescTable[]={ 0, 0, 0, 0, 1, 2, 3, 4 }; +extern const uint8_t AHBPrescTable[]; void pwmout_init(pwmout_t* obj, PinName pin) { // Get the peripheral name from the pin and assign it to the object obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM); - MBED_ASSERT(obj->pwm != (PWMName)NC); + + if (obj->pwm == (PWMName)NC) { + error("PWM error: pinout mapping failed."); + } // Enable TIM clock - if (obj->pwm == PWM_1) __TIM1_CLK_ENABLE(); + /* APB1 Timers */ if (obj->pwm == PWM_2) __TIM2_CLK_ENABLE(); if (obj->pwm == PWM_3) __TIM3_CLK_ENABLE(); if (obj->pwm == PWM_4) __TIM4_CLK_ENABLE(); - if (obj->pwm == PWM_9) __TIM9_CLK_ENABLE(); + /* APB2 Timers */ + if (obj->pwm == PWM_1) __TIM1_CLK_ENABLE(); + if (obj->pwm == PWM_9) __TIM9_CLK_ENABLE(); if (obj->pwm == PWM_10) __TIM10_CLK_ENABLE(); if (obj->pwm == PWM_11) __TIM11_CLK_ENABLE(); + /* Decide APBx divider for timer base clock + * Auto detect the Clockdivider value according to AHB,APB1 and APB2 prescaler register. + */ + ClockDivider = AHBPrescTable[ ( ( RCC->CFGR & RCC_CFGR_HPRE ) >> 4 ) ]; + switch( obj->pwm ) { + /* APB1 low clock */ + case PWM_2: + case PWM_3: + case PWM_4: + ClockDivider += APBxPrescTable[ ( (RCC->CFGR & RCC_CFGR_PPRE1 ) >> 13 ) ]; + break; + /* APB2 fast clock */ + case PWM_1: + case PWM_9: + case PWM_10: + case PWM_11: + ClockDivider += APBxPrescTable[ ( (RCC->CFGR & RCC_CFGR_PPRE2 ) >> 10 ) ]; + break; + default: + break; + } // Configure GPIO pinmap_pinout(pin, PinMap_PWM); @@ -110,10 +140,7 @@ } void pwmout_free(pwmout_t* obj) { - TimHandle.Instance = (TIM_TypeDef *)(obj->pwm); - - HAL_TIM_PWM_DeInit(&TimHandle); - + // Configure GPIO pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); } @@ -144,15 +171,12 @@ switch (obj->pin) { // Channels 1 case PA_0: - //case PA_2: case PA_5: case PA_6: case PA_8: case PA_15: case PB_4: case PB_6: - //case PB_8: - //case PB_9: case PC_6: channel = TIM_CHANNEL_1; break; @@ -164,8 +188,6 @@ break; // Channels 2 case PA_1: - //case PA_3: - //case PA_7: case PA_9: case PB_3: case PB_5: @@ -181,13 +203,10 @@ break; // Channels 3 case PA_2: - //case PA_3: case PA_10: - //case PB_0: case PB_8: case PB_10: case PC_8: - //case PC_9: channel = TIM_CHANNEL_3; break; // Channels 3N @@ -199,7 +218,6 @@ // Channels 4 case PA_3: case PA_11: - //case PB_1: case PB_9: case PC_9: channel = TIM_CHANNEL_4; @@ -211,8 +229,7 @@ HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig, channel); if (complementary_channel) { HAL_TIMEx_PWMN_Start(&TimHandle, channel); - } - else { + } else { HAL_TIM_PWM_Start(&TimHandle, channel); } } @@ -240,8 +257,10 @@ __HAL_TIM_DISABLE(&TimHandle); + // Update the SystemCoreClock variable + SystemCoreClockUpdate(); TimHandle.Init.Period = us - 1; - TimHandle.Init.Prescaler = (uint16_t)(SystemCoreClock / 2 / 1000000) - 1; // 1 µs tick + TimHandle.Init.Prescaler = (uint16_t)( ( SystemCoreClock >> ClockDivider ) / 1000000) - 1; // 1 µs tick TimHandle.Init.ClockDivision = 0; TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP; HAL_TIM_PWM_Init(&TimHandle); @@ -267,3 +286,5 @@ float value = (float)us / (float)obj->period; pwmout_write(obj, value); } + +#endif