75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/*
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Copyright (C) 2016 Stéphane D'Alu
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include "ch.h"
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#include "hal.h"
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static void pwm_cb_period(PWMDriver *pwmp) {
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(void)pwmp;
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palTogglePad(IOPORT1, LED0);
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palClearPad(IOPORT1, LED1);
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}
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static void pwm_cb_channel0(PWMDriver *pwmp) {
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(void)pwmp;
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palSetPad(IOPORT1, LED1);
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}
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/*
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* Application entry point.
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*/
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int main(void) {
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PWMConfig pwmcfg = {
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.frequency = PWM_FREQUENCY_31250HZ,
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.period = 31250,
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.callback = pwm_cb_period,
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{ { .mode = PWM_OUTPUT_DISABLED,
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.callback = pwm_cb_channel0, },
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{ .mode = PWM_OUTPUT_ACTIVE_HIGH,
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.callback = NULL,
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.ioline = LINE_LED2,
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.gpiote_channel = 0,
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.ppi_channel = { 0, 1 } },
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},
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};
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/*
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* System initializations.
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* - HAL initialization, this also initializes the configured device drivers
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* and performs the board-specific initializations.
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* - Kernel initialization, the main() function becomes a thread and the
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* RTOS is active.
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*/
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halInit();
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chSysInit();
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/*
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*
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*/
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pwmStart(&PWMD1, &pwmcfg);
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pwmEnablePeriodicNotification(&PWMD1);
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pwmEnableChannel(&PWMD1, 0, PWM_FRACTION_TO_WIDTH(&PWMD1, 2, 1));
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pwmEnableChannelNotification(&PWMD1, 0);
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pwmEnableChannel(&PWMD1, 1, PWM_FRACTION_TO_WIDTH(&PWMD1, 4, 3));
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while (1) {
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chThdSleepMilliseconds(500);
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}
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}
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