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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-06-15 15:58:20 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-06-15 15:58:20 +0000 |
| commit | 7c68ef157d009f9932ac47ba21ba5d74e321623f (patch) | |
| tree | 6c2442ca44cd090656ec3059ffb959f3d747e18d /testhal/LPC11xx/PWM/main.c | |
| parent | 076746af63d317f8e96766b9137a65679f60463f (diff) | |
| parent | e0d850113610f3efa0c0ac4946901f683e5e7332 (diff) | |
| download | ChibiOS-7c68ef157d009f9932ac47ba21ba5d74e321623f.tar.gz ChibiOS-7c68ef157d009f9932ac47ba21ba5d74e321623f.tar.bz2 ChibiOS-7c68ef157d009f9932ac47ba21ba5d74e321623f.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@5854 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'testhal/LPC11xx/PWM/main.c')
| -rw-r--r-- | testhal/LPC11xx/PWM/main.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/testhal/LPC11xx/PWM/main.c b/testhal/LPC11xx/PWM/main.c new file mode 100644 index 000000000..1ce05966f --- /dev/null +++ b/testhal/LPC11xx/PWM/main.c @@ -0,0 +1,106 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+ LPC11xx EXT driver - Copyright (C) 2013 Marcin Jokel
+ - Copyright (C) 2013 mike brown
+
+ 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;
+ palClearPad(GPIO0, GPIO0_LED);
+}
+
+static void pwm2c0cb(PWMDriver *pwmp) {
+
+ (void)pwmp;
+ palSetPad(GPIO0, GPIO0_LED);
+}
+
+static PWMConfig pwmcfg = {
+ 10000, /* 10kHz PWM clock frequency. */
+ 1000, /* Initial PWM period 4,8us */
+ 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);
+ pwmEnableChannel(&PWMD2, 1, 250);
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Changes the PWM channel 1 to 50% duty cycle.
+ */
+ pwmEnableChannel(&PWMD2, 0, 500);
+ pwmEnableChannel(&PWMD2, 1, 500);
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Changes the PWM channel 0 to 75% duty cycle.
+ */
+ pwmEnableChannel(&PWMD2, 0, 250);
+ pwmEnableChannel(&PWMD2, 1, 250);
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Changes PWM period to half second the duty cycle becomes 50%
+ * implicitly.
+ */
+ pwmChangePeriod(&PWMD2, 500);
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Disables channel 1.
+ */
+ pwmDisableChannel(&PWMD2, 1);
+ chThdSleepMilliseconds(5000);
+
+ /*
+ * Normal main() thread activity, in this demo it does nothing.
+ */
+ while (TRUE) {
+ chThdSleepMilliseconds(500);
+ }
+ return 0;
+}
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