165 lines
4.0 KiB
C
165 lines
4.0 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2006-2014 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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/*
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Concepts and parts of this file have been contributed by Uladzimir Pylinsky
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aka barthess.
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*/
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#include "ch.h"
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#include "hal.h"
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/*
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******************************************************************************
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* DEFINES
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******************************************************************************
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*/
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#define UART_STORM_BAUDRATE 3000000
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#define STORM_BUF_LEN 256
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/*
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******************************************************************************
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* EXTERNS
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******************************************************************************
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*/
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/*
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******************************************************************************
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* PROTOTYPES
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******************************************************************************
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*/
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static void txend1(UARTDriver *uartp);
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static void txend2(UARTDriver *uartp);
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static void rxerr(UARTDriver *uartp, uartflags_t e);
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static void rxchar(UARTDriver *uartp, uint16_t c);
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static void rxend(UARTDriver *uartp);
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/*
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******************************************************************************
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* GLOBAL VARIABLES
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******************************************************************************
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*/
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static uint8_t rxbuf[STORM_BUF_LEN];
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static uint8_t txbuf[STORM_BUF_LEN];
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/*
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* UART driver configuration structure.
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*/
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static const UARTConfig uart_cfg = {
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txend1,
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txend2,
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rxend,
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rxchar,
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rxerr,
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UART_STORM_BAUDRATE,
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0,
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0,
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0
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};
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static uint32_t ints;
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/*
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******************************************************************************
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******************************************************************************
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* LOCAL FUNCTIONS
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******************************************************************************
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******************************************************************************
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*/
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/*
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* This callback is invoked when a transmission buffer has been completely
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* read by the driver.
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*/
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static void txend1(UARTDriver *uartp) {
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ints++;
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chSysLockFromISR();
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uartStartSendI(uartp, STORM_BUF_LEN, txbuf);
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chSysUnlockFromISR();
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}
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/*
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* This callback is invoked when a transmission has physically completed.
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*/
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static void txend2(UARTDriver *uartp) {
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(void)uartp;
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chSysLockFromISR();
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chSysUnlockFromISR();
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}
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/*
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* This callback is invoked on a receive error, the errors mask is passed
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* as parameter.
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*/
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static void rxerr(UARTDriver *uartp, uartflags_t e) {
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(void)uartp;
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(void)e;
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osalSysHalt("");
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}
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/*
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* This callback is invoked when a character is received but the application
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* was not ready to receive it, the character is passed as parameter.
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*/
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static void rxchar(UARTDriver *uartp, uint16_t c) {
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(void)uartp;
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(void)c;
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}
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/*
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* This callback is invoked when a receive buffer has been completely written.
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*/
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static void rxend(UARTDriver *uartp) {
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(void)uartp;
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chSysLockFromISR();
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uartStartReceiveI(&UARTD6, STORM_BUF_LEN, rxbuf);
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chSysUnlockFromISR();
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}
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/*
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******************************************************************************
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* EXPORTED FUNCTIONS
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******************************************************************************
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*/
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/**
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*
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*/
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void dma_storm_uart_start(void){
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uint32_t i;
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for (i=0; i<STORM_BUF_LEN; i++){
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txbuf[i] = 0x55;
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rxbuf[i] = 0;
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}
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ints = 0;
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uartStart(&UARTD6, &uart_cfg);
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uartStartReceive(&UARTD6, STORM_BUF_LEN, rxbuf);
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uartStartSend(&UARTD6, STORM_BUF_LEN, txbuf);
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}
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uint32_t dma_storm_uart_stop(void){
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uartStopSend(&UARTD6);
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uartStopReceive(&UARTD6);
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uartStop(&UARTD6);
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return ints;
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}
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