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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@5437 35acf78f-673a-0410-8e92-d51de3d6d3f4

master
gdisirio 2013-03-16 09:02:17 +00:00
parent f0b4615ece
commit 9f9d400604
3 changed files with 15 additions and 17 deletions
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26
testhal/STM32F37x/PWM-ICU/main.c
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@ -38,7 +38,7 @@ static PWMConfig pwmcfg = {
10000, /* Initial PWM period 1S. */
pwmpcb,
{
{PWM_OUTPUT_ACTIVE_HIGH, pwmc1cb},
{PWM_OUTPUT_ACTIVE_LOW, pwmc1cb},
{PWM_OUTPUT_DISABLED, NULL},
{PWM_OUTPUT_DISABLED, NULL},
{PWM_OUTPUT_DISABLED, NULL}
@ -61,7 +61,7 @@ static void icuperiodcb(ICUDriver *icup) {
}
static ICUConfig icucfg = {
ICU_INPUT_ACTIVE_HIGH,
ICU_INPUT_ACTIVE_LOW,
10000, /* 10kHz ICU clock frequency. */
icuwidthcb,
icuperiodcb,
@ -85,13 +85,13 @@ int main(void) {
chSysInit();
/*
* Initializes the PWM driver 2 and ICU driver 3.
* GPIOA15 is the PWM output.
* Initializes the PWM driver 5 and ICU driver 3.
* GPIOC0 is the PWM output.
* GPIOC6 is the ICU input.
* The two pins have to be externally connected together.
*/
pwmStart(&PWMD2, &pwmcfg);
palSetPadMode(GPIOA, 15, PAL_MODE_ALTERNATE(1));
pwmStart(&PWMD5, &pwmcfg);
palSetPadMode(GPIOC, 0, PAL_MODE_ALTERNATE(2));
icuStart(&ICUD3, &icucfg);
palSetPadMode(GPIOC, 6, PAL_MODE_ALTERNATE(2));
icuEnable(&ICUD3);
@ -100,37 +100,35 @@ int main(void) {
/*
* Starts the PWM channel 0 using 75% duty cycle.
*/
pwmEnableChannel(&PWMD2, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD2, 7500));
pwmEnableChannel(&PWMD5, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD5, 7500));
chThdSleepMilliseconds(5000);
/*
* Changes the PWM channel 0 to 50% duty cycle.
*/
pwmEnableChannel(&PWMD2, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD2, 5000));
pwmEnableChannel(&PWMD5, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD5, 5000));
chThdSleepMilliseconds(5000);
/*
* Changes the PWM channel 0 to 25% duty cycle.
*/
pwmEnableChannel(&PWMD2, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD2, 2500));
pwmEnableChannel(&PWMD5, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD5, 2500));
chThdSleepMilliseconds(5000);
/*
* Changes PWM period to half second the duty cycle becomes 50%
* implicitly.
*/
pwmChangePeriod(&PWMD2, 5000);
pwmChangePeriod(&PWMD5, 5000);
chThdSleepMilliseconds(5000);
/*
* Disables channel 0 and stops the drivers.
*/
pwmDisableChannel(&PWMD2, 0);
pwmStop(&PWMD2);
pwmDisableChannel(&PWMD5, 0);
pwmStop(&PWMD5);
icuDisable(&ICUD3);
icuStop(&ICUD3);
palClearPad(GPIOC, GPIOC_LED1);
palClearPad(GPIOC, GPIOC_LED2);
/*
* Normal main() thread activity, in this demo it does nothing.

4
testhal/STM32F37x/PWM-ICU/mcuconf.h
View File

@ -104,7 +104,7 @@
#define STM32_ICU_USE_TIM2 FALSE
#define STM32_ICU_USE_TIM3 TRUE
#define STM32_ICU_USE_TIM4 TRUE
#define STM32_ICU_USE_TIM5 TRUE
#define STM32_ICU_USE_TIM5 FALSE
#define STM32_ICU_TIM2_IRQ_PRIORITY 7
#define STM32_ICU_TIM3_IRQ_PRIORITY 7
#define STM32_ICU_TIM4_IRQ_PRIORITY 7
@ -116,7 +116,7 @@
#define STM32_PWM_USE_TIM2 TRUE
#define STM32_PWM_USE_TIM3 FALSE
#define STM32_PWM_USE_TIM4 FALSE
#define STM32_PWM_USE_TIM5 FALSE
#define STM32_PWM_USE_TIM5 TRUE
#define STM32_PWM_TIM2_IRQ_PRIORITY 7
#define STM32_PWM_TIM3_IRQ_PRIORITY 7
#define STM32_PWM_TIM4_IRQ_PRIORITY 7

2
testhal/STM32F37x/PWM-ICU/readme.txt
View File

@ -12,7 +12,7 @@ The demo runs on an STMicroelectronics STM32373C-EVAL board.
** Board Setup **
- Connect PA15 and PC6 together.
- Connect PC0 and PC6 together.
** Build Procedure **