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-rw-r--r--testhal/STM32/PWM-ICU/main.c132
1 files changed, 132 insertions, 0 deletions
diff --git a/testhal/STM32/PWM-ICU/main.c b/testhal/STM32/PWM-ICU/main.c
new file mode 100644
index 000000000..c89b71988
--- /dev/null
+++ b/testhal/STM32/PWM-ICU/main.c
@@ -0,0 +1,132 @@
+/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+ 2011 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#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
+};
+
+icucnt_t last_width, last_period;
+
+static void icuwidthcb(ICUDriver *icup) {
+
+ last_width = icuGetWidthI(icup);
+}
+
+static void icuperiodcb(ICUDriver *icup) {
+
+ last_period = icuGetPeriodI(icup);
+}
+
+static ICUConfig icucfg = {
+ ICU_INPUT_ACTIVE_HIGH,
+ 10000, /* 10KHz ICU clock frequency. */
+ icuwidthcb,
+ icuperiodcb
+};
+
+/*
+ * 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.
+ */
+ pwmStart(&PWMD1, &pwmcfg);
+ palSetPadMode(IOPORT1, 8, PAL_MODE_STM32_ALTERNATE_PUSHPULL);
+ icuStart(&ICUD4, &icucfg);
+ icuEnable(&ICUD4);
+ chThdSleepMilliseconds(2000);
+
+ /*
+ * Starts the channel 0 using 25% duty cycle.
+ */
+ pwmEnableChannel(&PWMD1, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD1, 2500));
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Changes the channel 0 to 75% duty cycle.
+ */
+ pwmEnableChannel(&PWMD1, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD1, 7500));
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Changes PWM period to half second and duty cycle to 50%.
+ */
+ pwmChangePeriod(&PWMD1, 5000);
+ pwmEnableChannel(&PWMD1, 0, PWM_PERCENTAGE_TO_WIDTH(&PWMD1, 5000));
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Disables channel 0.
+ */
+ 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;
+}