83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
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/*
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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 "ch.h"
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#include "hal.h"
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#define I2S_BUF_SIZE 256
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static uint16_t i2s_rx_buf[I2S_BUF_SIZE];
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static void i2scallback(I2SDriver *i2sp);
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static const I2SConfig i2scfg = {
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NULL,
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i2s_rx_buf,
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I2S_BUF_SIZE,
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i2scallback,
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0,
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16
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};
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static void i2scallback(I2SDriver *i2sp) {
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if (i2sIsBufferComplete(i2sp)) {
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/* 2nd buffer half processing.*/
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}
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else {
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/* 1st buffer half processing.*/
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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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/*
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* Starting and configuring the I2S driver 2.
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*/
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i2sStart(&I2SD2, &i2scfg);
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palSetPadMode(GPIOB, 10, PAL_MODE_ALTERNATE(5));
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palSetPadMode(GPIOC, 3, PAL_MODE_ALTERNATE(5));
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/*
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* Starting continuous I2S transfer.
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*/
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i2sStartExchange(&I2SD2);
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/*
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* Normal main() thread activity, if the button is pressed then the I2S
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* transfer is stopped.
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*/
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while (true) {
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if (palReadPad(GPIOA, GPIOA_BUTTON))
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i2sStopExchange(&I2SD2);
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chThdSleepMilliseconds(500);
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}
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return 0;
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}
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