65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
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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 "hal.h"
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#include "ch.h"
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#define PERIOD 0x7FFF
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/**
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* @brief PWM configuration structure.
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*/
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static PWMConfig pwm3cfg = {
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F_CPU, /* PWM frequency. */
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PERIOD, /* PWM period. */
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NULL, /* TODO: comment. */
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{
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{PWM_OUTPUT_ACTIVE_HIGH, NULL}, /* PWM channel 1 actived. */
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{PWM_OUTPUT_ACTIVE_HIGH, NULL}, /* PWM channel 2 actived. */
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{PWM_OUTPUT_ACTIVE_HIGH, NULL}, /* PWM channel 3 actived. */
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},
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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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/*
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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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/* PE3-5 are timer 3 pwm channel outputs. */
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palSetPadMode(IOPORT5, 3, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(IOPORT5, 4, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(IOPORT5, 5, PAL_MODE_OUTPUT_PUSHPULL);
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pwmStart(&PWMD3, &pwm3cfg);
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/* Channel 0 with 50% duty cycle, 1 with 25% and 2 with 75% */
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pwmEnableChannel(&PWMD3, 0, PERIOD >> 1);
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pwmEnableChannel(&PWMD3, 1, PERIOD >> 2);
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pwmEnableChannel(&PWMD3, 2, (PERIOD >> 2)*3);
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while (TRUE) {
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}
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}
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