shao ziyang
mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of
mbed-src
by 
mbed official
Diff: targets/hal/TARGET_STM/TARGET_NUCLEO_L152RE/pwmout_api.c
- Revision:
- 129:0182c99221bc
- Parent:
- 84:f54042cbc282
- Child:
- 174:8bb9f3a33240
--- a/targets/hal/TARGET_STM/TARGET_NUCLEO_L152RE/pwmout_api.c Wed Mar 19 18:20:52 2014 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_L152RE/pwmout_api.c Thu Mar 20 11:45:07 2014 +0000
@@ -33,11 +33,43 @@
#include "pinmap.h"
#include "error.h"
+// TIM5 cannot be used because already used by the us_ticker
static const PinMap PinMap_PWM[] = {
- {PB_3, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM2)}, // TIM2_CH2
- {PB_4, PWM_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM3)}, // TIM3_CH1
- {PB_6, PWM_4, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM4)}, // TIM4_CH1
- {NC, NC, 0}
+ //{PA_0, PWM_5, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM5)}, // TIM5_CH1
+ {PA_1, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM2)}, // TIM2_CH2
+ //{PA_1, PWM_5, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM5)}, // TIM5_CH1
+ {PA_2, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM2)}, // TIM2_CH3
+ //{PA_2, PWM_5, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM5)}, // TIM5_CH3
+ //{PA_2, PWM_9, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM9)}, // TIM9_CH1
+ {PA_3, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM2)}, // TIM2_CH4
+ //{PA_3, PWM_5, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM5)}, // TIM5_CH4
+ //{PA_3, PWM_9, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM9)}, // TIM9_CH2
+ {PA_6, PWM_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM3)}, // TIM3_CH1
+ //{PA_6, PWM_10, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM10)}, // TIM10_CH1
+ {PA_7, PWM_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM3)}, // TIM3_CH2
+ //{PA_7, PWM_11, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM11)}, // TIM11_CH1
+ {PB_0, PWM_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM3)}, // TIM3_CH3
+ {PB_1, PWM_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM3)}, // TIM3_CH4
+ {PB_3, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM2)}, // TIM2_CH2
+ {PB_4, PWM_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM3)}, // TIM3_CH1
+ {PB_5, PWM_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM3)}, // TIM3_CH2
+ {PB_6, PWM_4, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM4)}, // TIM4_CH1
+ {PB_7, PWM_4, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM4)}, // TIM4_CH2
+ {PB_8, PWM_4, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM4)}, // TIM4_CH3
+ //{PB_8, PWM_10, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM10)}, // TIM10_CH1
+ {PB_9, PWM_4, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM4)}, // TIM4_CH4
+ //{PB_9, PWM_11, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM11)}, // TIM11_CH1
+ {PB_10, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM2)}, // TIM2_CH3
+ {PB_11, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM2)}, // TIM2_CH4
+ {PB_12, PWM_10, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM10)}, // TIM10_CH1
+ {PB_13, PWM_9, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM9)}, // TIM9_CH1
+ {PB_14, PWM_9, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM9)}, // TIM9_CH2
+ {PB_15, PWM_11, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM11)}, // TIM11_CH1
+ {PC_6, PWM_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM3)}, // TIM3_CH1
+ {PC_7, PWM_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM3)}, // TIM3_CH2
+ {PC_8, PWM_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM3)}, // TIM3_CH3
+ {PC_9, PWM_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_TIM3)}, // TIM3_CH4
+ {NC, NC, 0}
};
void pwmout_init(pwmout_t* obj, PinName pin) {
@@ -52,6 +84,10 @@
if (obj->pwm == PWM_2) RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
if (obj->pwm == PWM_3) RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
if (obj->pwm == PWM_4) RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
+ if (obj->pwm == PWM_5) RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);
+ if (obj->pwm == PWM_9) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM9, ENABLE);
+ if (obj->pwm == PWM_10) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM10, ENABLE);
+ if (obj->pwm == PWM_11) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM11, ENABLE);
// Configure GPIO
pinmap_pinout(pin, PinMap_PWM);
@@ -71,7 +107,7 @@
void pwmout_write(pwmout_t* obj, float value) {
TIM_TypeDef *tim = (TIM_TypeDef *)(obj->pwm);
TIM_OCInitTypeDef TIM_OCInitStructure;
-
+
if (value < 0.0) {
value = 0.0;
} else if (value > 1.0) {
@@ -80,21 +116,62 @@
obj->pulse = (uint32_t)((float)obj->period * value);
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
+ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
- TIM_OCInitStructure.TIM_Pulse = obj->pulse;
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
+ TIM_OCInitStructure.TIM_Pulse = obj->pulse;
+ TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
- // Configure channel 1
- if ((obj->pin == PB_4) || (obj->pin == PB_6)) {
- TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable);
- TIM_OC1Init(tim, &TIM_OCInitStructure);
- }
-
- // Configure channel 2
- if (obj->pin == PB_3) {
- TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable);
- TIM_OC2Init(tim, &TIM_OCInitStructure);
+ // Configure the channels
+ switch (obj->pin) {
+ // Channels 1
+ //case PA_0:
+ //case PA_1:
+ //case PA_2:
+ case PA_6:
+ //case PA_7:
+ case PB_4:
+ case PB_6:
+ //case PB_8:
+ //case PB_9:
+ case PB_12:
+ case PB_13:
+ case PB_15:
+ case PC_6:
+ TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable);
+ TIM_OC1Init(tim, &TIM_OCInitStructure);
+ break;
+ // Channels 2
+ case PA_1:
+ //case PA_3:
+ case PA_7:
+ case PB_3:
+ case PB_5:
+ case PB_7:
+ case PB_14:
+ case PC_7:
+ TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable);
+ TIM_OC2Init(tim, &TIM_OCInitStructure);
+ break;
+ // Channels 3
+ case PA_2:
+ case PB_0:
+ case PB_8:
+ case PB_10:
+ case PC_8:
+ TIM_OC3PreloadConfig(tim, TIM_OCPreload_Enable);
+ TIM_OC3Init(tim, &TIM_OCInitStructure);
+ break;
+ // Channels 4
+ case PA_3:
+ case PB_1:
+ case PB_9:
+ case PB_11:
+ case PC_9:
+ TIM_OC4PreloadConfig(tim, TIM_OCPreload_Enable);
+ TIM_OC4Init(tim, &TIM_OCInitStructure);
+ break;
+ default:
+ return;
}
}
@@ -123,10 +200,10 @@
obj->period = us;
- TIM_TimeBaseStructure.TIM_Period = obj->period - 1;
- TIM_TimeBaseStructure.TIM_Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
+ TIM_TimeBaseStructure.TIM_Period = obj->period - 1;
+ TIM_TimeBaseStructure.TIM_Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
- TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
+ TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(tim, &TIM_TimeBaseStructure);
// Set duty cycle again