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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2014-05-07 10:44:43 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2014-05-07 10:44:43 +0000 |
| commit | eefaedd59cccaeddcde8f54f89c98a26cc570e82 (patch) | |
| tree | dc4f07d0b2274ae46865fce952d1750ea187f7db /testhal/STM32/STM32F1xx/PWM-ICU/main.c | |
| parent | 084e1f7b5ad7cb86cbe68eb7e1749f7750c89ce3 (diff) | |
| download | ChibiOS-eefaedd59cccaeddcde8f54f89c98a26cc570e82.tar.gz ChibiOS-eefaedd59cccaeddcde8f54f89c98a26cc570e82.tar.bz2 ChibiOS-eefaedd59cccaeddcde8f54f89c98a26cc570e82.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@6920 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'testhal/STM32/STM32F1xx/PWM-ICU/main.c')
| -rw-r--r-- | testhal/STM32/STM32F1xx/PWM-ICU/main.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/testhal/STM32/STM32F1xx/PWM-ICU/main.c b/testhal/STM32/STM32F1xx/PWM-ICU/main.c new file mode 100644 index 000000000..eecd5b2ad --- /dev/null +++ b/testhal/STM32/STM32F1xx/PWM-ICU/main.c @@ -0,0 +1,141 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#include "ch.h"
+#include "hal.h"
+
+static void pwmpcb(PWMDriver *pwmp) {
+
+ (void)pwmp;
+ palSetPad(IOPORT3, GPIOC_LED);
+}
+
+static void pwmc1cb(PWMDriver *pwmp) {
+
+ (void)pwmp;
+ palClearPad(IOPORT3, GPIOC_LED);
+}
+
+static PWMConfig pwmcfg = {
+ 10000, /* 10kHz PWM clock frequency. */
+ 10000, /* Initial PWM period 1S. */
+ pwmpcb,
+ {
+ {PWM_OUTPUT_ACTIVE_HIGH, pwmc1cb},
+ {PWM_OUTPUT_DISABLED, NULL},
+ {PWM_OUTPUT_DISABLED, NULL},
+ {PWM_OUTPUT_DISABLED, NULL}
+ },
+ 0,
+ 0,
+#if STM32_PWM_USE_ADVANCED
+ 0
+#endif
+};
+
+icucnt_t last_width, last_period;
+
+static void icuwidthcb(ICUDriver *icup) {
+
+ last_width = icuGetWidth(icup);
+}
+
+static void icuperiodcb(ICUDriver *icup) {
+
+ last_period = icuGetPeriod(icup);
+}
+
+static ICUConfig icucfg = {
+ ICU_INPUT_ACTIVE_HIGH,
+ 10000, /* 10kHz ICU clock frequency. */
+ icuwidthcb,
+ icuperiodcb,
+ NULL,
+ ICU_CHANNEL_1,
+ 0
+};
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+
+ /*
+ * System initializations.
+ * - HAL initialization, this also initializes the configured device drivers
+ * and performs the board-specific initializations.
+ * - Kernel initialization, the main() function becomes a thread and the
+ * RTOS is active.
+ */
+ halInit();
+ chSysInit();
+
+ /*
+ * LED initially off.
+ */
+ palSetPad(IOPORT3, GPIOC_LED);
+
+ /*
+ * Initializes the PWM driver 1 and ICU driver 4.
+ */
+ pwmStart(&PWMD1, &pwmcfg);
+ palSetPadMode(IOPORT1, 8, PAL_MODE_STM32_ALTERNATE_PUSHPULL);
+ icuStart(&ICUD4, &icucfg);
+ icuEnable(&ICUD4);
+ chThdSleepMilliseconds(2000);
+
+ /*
+ * Starts the PWM channel 0 using 75% duty cycle.
+ */
+ pwmEnableChannel(&PWMD1, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD1, 7500));
+ 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 and stops the drivers.
+ */
+ pwmDisableChannel(&PWMD1, 0);
+ pwmStop(&PWMD1);
+ icuDisable(&ICUD4);
+ icuStop(&ICUD4);
+ palSetPad(IOPORT3, GPIOC_LED);
+
+ /*
+ * Normal main() thread activity, in this demo it does nothing.
+ */
+ while (TRUE) {
+ chThdSleepMilliseconds(500);
+ }
+ return 0;
+}
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