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| author | Stephen Caudle <stephen@caudle.info> | 2015-09-08 23:22:01 -0400 |
|---|---|---|
| committer | Stephen Caudle <stephen@caudle.info> | 2015-09-27 09:28:27 -0400 |
| commit | cd2787ea883144601fe4ee069aaaf691c652368b (patch) | |
| tree | 08783b9bd649ca80e1484ffa5d3547f294687ba9 /testhal/NRF51/NRF51822/GPT/main.c | |
| parent | 0aaa137a33c6052b6c2f04b212018f1f482d0ae3 (diff) | |
| download | ChibiOS-Contrib-cd2787ea883144601fe4ee069aaaf691c652368b.tar.gz ChibiOS-Contrib-cd2787ea883144601fe4ee069aaaf691c652368b.tar.bz2 ChibiOS-Contrib-cd2787ea883144601fe4ee069aaaf691c652368b.zip | |
Add GPT driver for nRF51
Diffstat (limited to 'testhal/NRF51/NRF51822/GPT/main.c')
| -rw-r--r-- | testhal/NRF51/NRF51822/GPT/main.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/testhal/NRF51/NRF51822/GPT/main.c b/testhal/NRF51/NRF51822/GPT/main.c new file mode 100644 index 0000000..3531644 --- /dev/null +++ b/testhal/NRF51/NRF51822/GPT/main.c @@ -0,0 +1,124 @@ +/*
+ Copyright (C) 2015 Stephen Caudle
+
+ 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"
+
+/*
+ * GPT callback for GPTD2.
+ */
+static void gptcallback1(GPTDriver *gptp) {
+
+ (void)gptp;
+ palTogglePad(IOPORT1, LED1);
+
+ /*
+ * Start a one-shot timer (@ 250ms)
+ */
+ chSysLockFromISR();
+ gptStartOneShotI(&GPTD3, 15625);
+ chSysUnlockFromISR();
+}
+
+/*
+ * GPT callback for GPTD3.
+ */
+static void gptcallback2(GPTDriver *gptp) {
+
+ (void)gptp;
+ palTogglePad(IOPORT1, LED2);
+}
+
+/*
+ * GPT configuration
+ * Frequency: 31250Hz (32us period)
+ * Resolution: 16 bits
+ */
+static const GPTConfig gptcfg1 = {
+ 31250,
+ gptcallback1,
+ 16,
+};
+
+/*
+ * GPT configuration
+ * Frequency: 62500Hz (16us period)
+ * Resolution: 16 bits
+ */
+static const GPTConfig gptcfg2 = {
+ 62500,
+ gptcallback2,
+ 16,
+};
+
+/*
+ * LED blinker thread, times are in milliseconds.
+ */
+static THD_WORKING_AREA(waThread1, 128);
+static THD_FUNCTION(Thread1, arg) {
+
+ (void)arg;
+ chRegSetThreadName("blinker");
+ while (true) {
+ palTogglePad(IOPORT1, LED0);
+ chThdSleepMilliseconds(500);
+ }
+}
+
+/*
+ * 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();
+
+ /*
+ * Creates the blinker thread.
+ */
+ chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
+
+ /*
+ * Sets up the GPT timers
+ */
+ gptStart(&GPTD2, &gptcfg1);
+ gptStart(&GPTD3, &gptcfg2);
+
+ /*
+ * Start a continuous timer
+ */
+ gptStartContinuous(&GPTD2, 15625);
+
+ /*
+ * Normal main() thread activity, in this demo it does nothing.
+ */
+ while (true) {
+ if (palReadPad(IOPORT1, KEY1) == 0) {
+ gptStopTimer(&GPTD2);
+ gptStop(&GPTD2);
+ gptStopTimer(&GPTD3);
+ gptStop(&GPTD3);
+ }
+ chThdSleepMilliseconds(500);
+ }
+}
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