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-rw-r--r--testhal/LPC122x/PWM/main.c96
1 files changed, 96 insertions, 0 deletions
diff --git a/testhal/LPC122x/PWM/main.c b/testhal/LPC122x/PWM/main.c
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+++ b/testhal/LPC122x/PWM/main.c
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+/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+ LPC122x PWM driver - Copyright (C) 2013 Marcin Jokel
+
+ 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 pwm2pcb(PWMDriver *pwmp) {
+
+ (void)pwmp;
+ palSetPad(GPIO1, GPIO1_LED2);
+}
+
+static void pwm2c0cb(PWMDriver *pwmp) {
+
+ (void)pwmp;
+ palClearPad(GPIO1, GPIO1_LED2);
+}
+
+static PWMConfig pwmcfg = {
+ 10000, /* 100kHz PWM clock frequency. */
+ 1000, /* PWM 10 Hz */
+ pwm2pcb,
+ {
+ {PWM_OUTPUT_ACTIVE_LOW, pwm2c0cb},
+ {PWM_OUTPUT_ACTIVE_LOW, NULL}
+ }
+};
+
+/*
+ * 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();
+
+ /*
+ * Initializes the PWM driver 2.
+ */
+ pwmStart(&PWMD2, &pwmcfg);
+ chThdSleepMilliseconds(2000);
+
+ /*
+ * Starts the PWM channel 1 using 75% duty cycle.
+ */
+ pwmEnableChannel(&PWMD2, 0, 250);
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Changes the PWM channel 1 to 50% duty cycle.
+ */
+ pwmEnableChannel(&PWMD2, 0, 500);
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Changes the PWM channel 0 to 75% duty cycle.
+ */
+ pwmEnableChannel(&PWMD2, 0, 250);
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Changes PWM period to half second the duty cycle becomes 50%
+ * implicitly.
+ */
+ pwmChangePeriod(&PWMD2, 500);
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Normal main() thread activity, in this demo it does nothing.
+ */
+ while (TRUE) {
+ chThdSleepMilliseconds(500);
+ }
+ return 0;
+}