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| author | Giovanni Di Sirio <gdisirio@gmail.com> | 2015-08-29 12:25:38 +0000 |
|---|---|---|
| committer | Giovanni Di Sirio <gdisirio@gmail.com> | 2015-08-29 12:25:38 +0000 |
| commit | 159a64f916f73e9f7810056013bbde2452d10ae4 (patch) | |
| tree | 64903f46bca269163dd57ee4585606d60c3398a7 /testhal/STM32 | |
| parent | 9fb87de7e9befda2043ac320e6915045cd9ede73 (diff) | |
| download | ChibiOS-159a64f916f73e9f7810056013bbde2452d10ae4.tar.gz ChibiOS-159a64f916f73e9f7810056013bbde2452d10ae4.tar.bz2 ChibiOS-159a64f916f73e9f7810056013bbde2452d10ae4.zip | |
F7 PWM-ICU demo working.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8255 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'testhal/STM32')
| -rw-r--r-- | testhal/STM32/STM32F7xx/PWM-ICU/main.c | 50 |
1 files changed, 45 insertions, 5 deletions
diff --git a/testhal/STM32/STM32F7xx/PWM-ICU/main.c b/testhal/STM32/STM32F7xx/PWM-ICU/main.c index 54a0e71be..78d51d7da 100644 --- a/testhal/STM32/STM32F7xx/PWM-ICU/main.c +++ b/testhal/STM32/STM32F7xx/PWM-ICU/main.c @@ -63,12 +63,17 @@ static void icuperiodcb(ICUDriver *icup) { last_period = icuGetPeriodX(icup);
}
+static void icuovfcb(ICUDriver *icup) {
+
+ (void)icup;
+}
+
static ICUConfig icucfg = {
ICU_INPUT_ACTIVE_HIGH,
10000, /* 10kHz ICU clock frequency. */
icuwidthcb,
icuperiodcb,
- NULL,
+ icuovfcb,
ICU_CHANNEL_1,
0
};
@@ -101,18 +106,24 @@ int main(void) { palSetPadMode(GPIOA, GPIOA_ARD_D5, PAL_MODE_ALTERNATE(1));
/*
- * Starting ICU driver 2 and enabling the notifications.
+ * Starting ICU driver 2.
* GPIOA15 is programmed as ICU input (channel 1 of TIM2).
*/
icuStart(&ICUD2, &icucfg);
palSetPadMode(GPIOA, GPIOA_ARD_D9, PAL_MODE_ALTERNATE(1));
- icuEnableNotifications(&ICUD2);
+
+ /*
+ * GPIOI1 is programmed as output (board LED).
+ */
+ palClearPad(GPIOI, GPIOI_ARD_D13);
+ palSetPadMode(GPIOI, GPIOI_ARD_D13, PAL_MODE_OUTPUT_PUSHPULL);
chThdSleepMilliseconds(1000);
/*
- * Starting ICU capture.
+ * Starting ICU capture and enabling the notifications.
*/
icuStartCapture(&ICUD2);
+ icuEnableNotifications(&ICUD2);
/*
* Normal main() thread activity, various PWM patterns are generated
@@ -120,6 +131,35 @@ int main(void) { * board LED mirrors the PWM output.
*/
while (true) {
- chThdSleepMilliseconds(500);
+ /*
+ * Starts the PWM channel 0 using 75% duty cycle.
+ */
+ pwmEnableChannel(&PWMD1, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD1, 7500));
+ pwmEnableChannelNotification(&PWMD1, 0);
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Changes the PWM channel 0 to 50% duty cycle.
+ */
+ pwmEnableChannel(&PWMD1, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD1, 5000));
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Changes the PWM channel 0 to 25% duty cycle.
+ */
+ pwmEnableChannel(&PWMD1, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD1, 2500));
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Changes PWM period to half second the duty cycle becomes 50%
+ * implicitly.
+ */
+ pwmChangePeriod(&PWMD1, 5000);
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Disables channel 0.
+ */
+ pwmDisableChannel(&PWMD1, 0);
}
}
|