diff options
| author | Giovanni Di Sirio <gdisirio@gmail.com> | 2015-08-28 14:37:18 +0000 |
|---|---|---|
| committer | Giovanni Di Sirio <gdisirio@gmail.com> | 2015-08-28 14:37:18 +0000 |
| commit | 9fb87de7e9befda2043ac320e6915045cd9ede73 (patch) | |
| tree | 7e8c84e63c343c595b567ccf935ca64df51e1c8d /testhal/STM32/STM32F7xx/PWM-ICU/main.c | |
| parent | 0e0dc7418ea9f11fa61a9288a3ce10b5cfe7bc6f (diff) | |
| download | ChibiOS-9fb87de7e9befda2043ac320e6915045cd9ede73.tar.gz ChibiOS-9fb87de7e9befda2043ac320e6915045cd9ede73.tar.bz2 ChibiOS-9fb87de7e9befda2043ac320e6915045cd9ede73.zip | |
PWM-ICU demo for F7, not finished yet.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8254 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'testhal/STM32/STM32F7xx/PWM-ICU/main.c')
| -rw-r--r-- | testhal/STM32/STM32F7xx/PWM-ICU/main.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/testhal/STM32/STM32F7xx/PWM-ICU/main.c b/testhal/STM32/STM32F7xx/PWM-ICU/main.c new file mode 100644 index 000000000..54a0e71be --- /dev/null +++ b/testhal/STM32/STM32F7xx/PWM-ICU/main.c @@ -0,0 +1,125 @@ +/*
+ ChibiOS - Copyright (C) 2006..2015 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"
+
+/*===========================================================================*/
+/* PWM driver related. */
+/*===========================================================================*/
+
+static void pwmpcb(PWMDriver *pwmp) {
+
+ (void)pwmp;
+}
+
+static void pwmc1cb(PWMDriver *pwmp) {
+
+ (void)pwmp;
+}
+
+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
+};
+
+/*===========================================================================*/
+/* ICU driver related. */
+/*===========================================================================*/
+
+icucnt_t last_width, last_period;
+
+static void icuwidthcb(ICUDriver *icup) {
+
+ palSetPad(GPIOI, GPIOI_ARD_D13);
+ last_width = icuGetWidthX(icup);
+}
+
+static void icuperiodcb(ICUDriver *icup) {
+
+ palClearPad(GPIOI, GPIOI_ARD_D13);
+ last_period = icuGetPeriodX(icup);
+}
+
+static ICUConfig icucfg = {
+ ICU_INPUT_ACTIVE_HIGH,
+ 10000, /* 10kHz ICU clock frequency. */
+ icuwidthcb,
+ icuperiodcb,
+ NULL,
+ ICU_CHANNEL_1,
+ 0
+};
+
+/*===========================================================================*/
+/* Application code. */
+/*===========================================================================*/
+
+/*
+ * 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();
+
+ /*
+ * Starting PWM driver 1 and enabling the notifications.
+ * GPIOA8 is programmed as PWM output (channel 1 of TIM1).
+ */
+ pwmStart(&PWMD1, &pwmcfg);
+ pwmEnablePeriodicNotification(&PWMD1);
+ palSetPadMode(GPIOA, GPIOA_ARD_D5, PAL_MODE_ALTERNATE(1));
+
+ /*
+ * Starting ICU driver 2 and enabling the notifications.
+ * GPIOA15 is programmed as ICU input (channel 1 of TIM2).
+ */
+ icuStart(&ICUD2, &icucfg);
+ palSetPadMode(GPIOA, GPIOA_ARD_D9, PAL_MODE_ALTERNATE(1));
+ icuEnableNotifications(&ICUD2);
+ chThdSleepMilliseconds(1000);
+
+ /*
+ * Starting ICU capture.
+ */
+ icuStartCapture(&ICUD2);
+
+ /*
+ * Normal main() thread activity, various PWM patterns are generated
+ * cyclically, if the ICU input is connected to the PWM output the
+ * board LED mirrors the PWM output.
+ */
+ while (true) {
+ chThdSleepMilliseconds(500);
+ }
+}
|