shao ziyang
mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of
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by 
mbed official
Diff: targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/pwmout_api.c
- Revision:
- 174:8bb9f3a33240
- Parent:
- 167:d5744491c362
- Child:
- 208:4557f4bb2dd5
--- a/targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/pwmout_api.c Mon Apr 28 18:15:06 2014 +0100
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/pwmout_api.c Tue Apr 29 11:15:07 2014 +0100
@@ -29,6 +29,8 @@
*/
#include "pwmout_api.h"
+#if DEVICE_PWMOUT
+
#include "cmsis.h"
#include "pinmap.h"
#include "error.h"
@@ -40,7 +42,7 @@
{PA_3, PWM_2, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM2_CH4 - Default (warning: not connected on D0 per default)
{PA_6, PWM_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM3_CH1 - Default
{PA_7, PWM_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM3_CH2 - Default
- //{PA_7, PWM_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 6)}, // TIM1_CH1N - GPIO_PartialRemap_TIM1
+// {PA_7, PWM_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 6)}, // TIM1_CH1N - GPIO_PartialRemap_TIM1
{PA_8, PWM_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM1_CH1 - Default
{PA_9, PWM_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM1_CH2 - Default
{PA_10, PWM_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM1_CH3 - Default
@@ -48,22 +50,22 @@
{PA_15, PWM_2, STM_PIN_DATA(GPIO_Mode_AF_PP, 8)}, // TIM2_CH1_ETR - GPIO_FullRemap_TIM2
{PB_0, PWM_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM3_CH3 - Default
- //{PB_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 6)}, // TIM1_CH2N - GPIO_PartialRemap_TIM1
- {PB_1, PWM_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM3_CH4 - Default
- //{PB_1, PWM_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 6)}, // TIM1_CH3N - GPIO_PartialRemap_TIM1
+// {PB_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 6)}, // TIM1_CH2N - GPIO_PartialRemap_TIM1
+ {PB_1, PWM_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM3_CH4 - Default
+// {PB_1, PWM_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 6)}, // TIM1_CH3N - GPIO_PartialRemap_TIM1
{PB_3, PWM_2, STM_PIN_DATA(GPIO_Mode_AF_PP, 8)}, // TIM2_CH2 - GPIO_FullRemap_TIM2
{PB_4, PWM_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 7)}, // TIM3_CH1 - GPIO_PartialRemap_TIM3
{PB_5, PWM_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 7)}, // TIM3_CH2 - GPIO_PartialRemap_TIM3
- //{PB_6, PWM_4, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM4_CH1 - Default (used by ticker)
- //{PB_7, PWM_4, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM4_CH2 - Default (used by ticker)
- //{PB_8, PWM_4, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM4_CH3 - Default (used by ticker)
- //{PB_9, PWM_4, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM4_CH4 - Default (used by ticker)
+// {PB_6, PWM_4, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM4_CH1 - Default (used by ticker)
+// {PB_7, PWM_4, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM4_CH2 - Default (used by ticker)
+// {PB_8, PWM_4, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM4_CH3 - Default (used by ticker)
+// {PB_9, PWM_4, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM4_CH4 - Default (used by ticker)
{PB_10, PWM_2, STM_PIN_DATA(GPIO_Mode_AF_PP, 8)}, // TIM2_CH3 - GPIO_FullRemap_TIM2
{PB_11, PWM_2, STM_PIN_DATA(GPIO_Mode_AF_PP, 8)}, // TIM2_CH4 - GPIO_FullRemap_TIM2
{PB_13, PWM_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM1_CH1N - Default
{PB_14, PWM_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM1_CH2N - Default
{PB_15, PWM_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)}, // TIM1_CH3N - Default
-
+
{PC_6, PWM_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 9)}, // TIM3_CH1 - GPIO_FullRemap_TIM3
{PC_7, PWM_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 9)}, // TIM3_CH2 - GPIO_FullRemap_TIM3
{PC_8, PWM_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 9)}, // TIM3_CH3 - GPIO_FullRemap_TIM3
@@ -71,27 +73,27 @@
{NC, NC, 0}
};
-void pwmout_init(pwmout_t* obj, PinName pin) {
+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);
-
+
if (obj->pwm == (PWMName)NC) {
error("PWM pinout mapping failed");
}
-
+
// Enable TIM clock
if (obj->pwm == PWM_1) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
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);
-
+
// Configure GPIO
pinmap_pinout(pin, PinMap_PWM);
-
+
obj->pin = pin;
obj->period = 0;
obj->pulse = 0;
-
+
pwmout_period_us(obj, 20000); // 20 ms per default
}
@@ -103,15 +105,15 @@
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) {
value = 1.0;
}
-
+
obj->pulse = (uint32_t)((float)obj->period * value);
-
+
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_Pulse = obj->pulse;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
@@ -126,14 +128,14 @@
case PA_8:
case PA_15:
case PB_4:
- //case PB_6:
+ //case PB_6:
case PC_6:
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable);
TIM_OC1Init(tim, &TIM_OCInitStructure);
break;
// Channels 1N
- //case PA_7:
+ //case PA_7:
case PB_13:
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable);
@@ -145,52 +147,52 @@
case PA_9:
case PB_3:
case PB_5:
- //case PB_7:
+ //case PB_7:
case PC_7:
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
+ TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable);
TIM_OC2Init(tim, &TIM_OCInitStructure);
break;
// Channels 2N
- //case PB_0:
+ //case PB_0:
case PB_14:
- TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
+ TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable);
TIM_OC2Init(tim, &TIM_OCInitStructure);
- break;
- // Channels 3
+ break;
+ // Channels 3
case PA_2:
case PA_10:
case PB_0:
- //case PB_8:
+ //case PB_8:
case PB_10:
case PC_8:
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OC3PreloadConfig(tim, TIM_OCPreload_Enable);
TIM_OC3Init(tim, &TIM_OCInitStructure);
break;
- // Channels 3N
- //case PB_1:
+ // Channels 3N
+ //case PB_1:
case PB_15:
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OC3PreloadConfig(tim, TIM_OCPreload_Enable);
TIM_OC3Init(tim, &TIM_OCInitStructure);
- break;
- // Channels 4
+ break;
+ // Channels 4
case PA_3:
case PA_11:
case PB_1:
- //case PB_9:
+ //case PB_9:
case PB_11:
case PC_9:
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OC4PreloadConfig(tim, TIM_OCPreload_Enable);
TIM_OC4Init(tim, &TIM_OCInitStructure);
- break;
+ break;
default:
return;
}
-
+
TIM_CtrlPWMOutputs(tim, ENABLE);
}
@@ -215,20 +217,20 @@
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
float dc = pwmout_read(obj);
- TIM_Cmd(tim, DISABLE);
-
+ TIM_Cmd(tim, DISABLE);
+
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
pwmout_write(obj, dc);
-
- TIM_ARRPreloadConfig(tim, ENABLE);
+
+ TIM_ARRPreloadConfig(tim, ENABLE);
TIM_Cmd(tim, ENABLE);
}
@@ -244,3 +246,5 @@
float value = (float)us / (float)obj->period;
pwmout_write(obj, value);
}
+
+#endif