111 lines
2.9 KiB
C
111 lines
2.9 KiB
C
|
/*
|
||
|
ChibiOS/RT - Copyright (C) 2006-2014 Giovanni Di Sirio
|
||
|
|
||
|
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.
|
||
|
*/
|
||
|
/*
|
||
|
Concepts and parts of this file have been contributed by Uladzimir Pylinsky
|
||
|
aka barthess.
|
||
|
*/
|
||
|
|
||
|
#include "ch.h"
|
||
|
#include "hal.h"
|
||
|
|
||
|
/*
|
||
|
******************************************************************************
|
||
|
* DEFINES
|
||
|
******************************************************************************
|
||
|
*/
|
||
|
#define SPI_BUF_SIZE 512
|
||
|
|
||
|
/*
|
||
|
******************************************************************************
|
||
|
* EXTERNS
|
||
|
******************************************************************************
|
||
|
*/
|
||
|
|
||
|
/*
|
||
|
******************************************************************************
|
||
|
* PROTOTYPES
|
||
|
******************************************************************************
|
||
|
*/
|
||
|
static void spi_end_cb(SPIDriver *spip);
|
||
|
|
||
|
/*
|
||
|
******************************************************************************
|
||
|
* GLOBAL VARIABLES
|
||
|
******************************************************************************
|
||
|
*/
|
||
|
static uint8_t testbuf_ram[SPI_BUF_SIZE];
|
||
|
static const uint8_t testbuf_flash[SPI_BUF_SIZE];
|
||
|
|
||
|
/*
|
||
|
*
|
||
|
*/
|
||
|
static const SPIConfig spicfg = {
|
||
|
spi_end_cb,
|
||
|
GPIOA,
|
||
|
GPIOA_SPI1_NSS,
|
||
|
0, //SPI_CR1_BR_1 | SPI_CR1_BR_0
|
||
|
};
|
||
|
|
||
|
static uint32_t ints;
|
||
|
static binary_semaphore_t sem;
|
||
|
static bool stop = false;
|
||
|
|
||
|
/*
|
||
|
******************************************************************************
|
||
|
******************************************************************************
|
||
|
* LOCAL FUNCTIONS
|
||
|
******************************************************************************
|
||
|
******************************************************************************
|
||
|
*/
|
||
|
|
||
|
static void spi_end_cb(SPIDriver *spip){
|
||
|
ints++;
|
||
|
|
||
|
if (stop){
|
||
|
chSysLockFromISR();
|
||
|
chBSemSignalI(&sem);
|
||
|
chSysUnlockFromISR();
|
||
|
return;
|
||
|
}
|
||
|
else{
|
||
|
chSysLockFromISR();
|
||
|
spiStartExchangeI(spip, SPI_BUF_SIZE, testbuf_flash, testbuf_ram);
|
||
|
chSysUnlockFromISR();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
******************************************************************************
|
||
|
* EXPORTED FUNCTIONS
|
||
|
******************************************************************************
|
||
|
*/
|
||
|
|
||
|
void dma_storm_spi_start(void){
|
||
|
ints = 0;
|
||
|
stop = false;
|
||
|
chBSemObjectInit(&sem, true);
|
||
|
spiStart(&SPID1, &spicfg);
|
||
|
spiStartExchange(&SPID1, SPI_BUF_SIZE, testbuf_flash, testbuf_ram);
|
||
|
}
|
||
|
|
||
|
uint32_t dma_storm_spi_stop(void){
|
||
|
stop = true;
|
||
|
chBSemWait(&sem);
|
||
|
spiStop(&SPID1);
|
||
|
return ints;
|
||
|
}
|
||
|
|