91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
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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 SPI_BUF_SIZE 512
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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 spi_end_cb(SPIDriver *spip);
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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 testbuf_ram[SPI_BUF_SIZE];
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static const uint8_t testbuf_flash[SPI_BUF_SIZE];
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/*
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*
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*/
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static const SPIConfig spicfg = {
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spi_end_cb,
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GPIOA,
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GPIOA_SPI1_NSS,
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0, //SPI_CR1_BR_1 | SPI_CR1_BR_0
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};
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static uint32_t its;
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static binary_semaphore_t sem;
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static bool stop = false;
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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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static void spi_end_cb(SPIDriver *spip){
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its++;
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if (stop){
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chSysLockFromISR();
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chBSemSignalI(&sem);
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chSysUnlockFromISR();
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return;
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}
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else{
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chSysLockFromISR();
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spiStartExchangeI(spip, SPI_BUF_SIZE, testbuf_flash, testbuf_ram);
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chSysUnlockFromISR();
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}
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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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void dma_storm_spi_start(void){
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its = 0;
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stop = false;
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chBSemObjectInit(&sem, true);
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spiStart(&SPID1, &spicfg);
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spiStartExchange(&SPID1, SPI_BUF_SIZE, testbuf_flash, testbuf_ram);
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}
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uint32_t dma_storm_spi_stop(void){
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stop = true;
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chBSemWait(&sem);
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spiStop(&SPID1);
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return its;
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}
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