75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
|
/*
|
||
|
|
Copyright (C) 2016 Stéphane D'Alu
|
||
|
|
|
||
|
|
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 pwm_cb_period(PWMDriver *pwmp) {
|
||
|
|
(void)pwmp;
|
||
|
|
|
||
|
|
palTogglePad(IOPORT1, LED0);
|
||
|
|
palClearPad(IOPORT1, LED1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
static void pwm_cb_channel0(PWMDriver *pwmp) {
|
||
|
|
(void)pwmp;
|
||
|
|
palSetPad(IOPORT1, LED1);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Application entry point.
|
||
|
|
*/
|
||
|
|
int main(void) {
|
||
|
|
PWMConfig pwmcfg = {
|
||
|
|
.frequency = PWM_FREQUENCY_31250HZ,
|
||
|
|
.period = 31250,
|
||
|
|
.callback = pwm_cb_period,
|
||
|
|
{ { .mode = PWM_OUTPUT_DISABLED,
|
||
|
|
.callback = pwm_cb_channel0, },
|
||
|
|
{ .mode = PWM_OUTPUT_ACTIVE_HIGH,
|
||
|
|
.callback = NULL,
|
||
|
|
.ioline = LINE_LED2,
|
||
|
|
.gpiote_channel = 0,
|
||
|
|
.ppi_channel = { 0, 1 } },
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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();
|
||
|
|
|
||
|
|
/*
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
pwmStart(&PWMD1, &pwmcfg);
|
||
|
|
pwmEnablePeriodicNotification(&PWMD1);
|
||
|
|
pwmEnableChannel(&PWMD1, 0, PWM_FRACTION_TO_WIDTH(&PWMD1, 2, 1));
|
||
|
|
pwmEnableChannelNotification(&PWMD1, 0);
|
||
|
|
pwmEnableChannel(&PWMD1, 1, PWM_FRACTION_TO_WIDTH(&PWMD1, 4, 3));
|
||
|
|
|
||
|
|
while (1) {
|
||
|
|
chThdSleepMilliseconds(500);
|
||
|
|
}
|
||
|
|
}
|