99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
#include "Driver_SPI.h"
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#include "cmsis_os.h" // ARM::CMSIS:RTOS:Keil RTX
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void mySPI_Thread(void const *argument);
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osThreadId tid_mySPI_Thread;
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/* SPI Driver */
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extern ARM_DRIVER_SPI Driver_SPI0;
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void mySPI_callback(uint32_t event)
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{
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switch (event)
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{
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case ARM_SPI_EVENT_TRANSFER_COMPLETE:
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/* Success: Wakeup Thread */
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osSignalSet(tid_mySPI_Thread, 0x01);
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break;
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case ARM_SPI_EVENT_DATA_LOST:
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/* Occurs in slave mode when data is requested/sent by master
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but send/receive/transfer operation has not been started
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and indicates that data is lost. Occurs also in master mode
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when driver cannot transfer data fast enough. */
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__breakpoint(0); /* Error: Call debugger or replace with custom error handling */
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break;
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case ARM_SPI_EVENT_MODE_FAULT:
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/* Occurs in master mode when Slave Select is deactivated and
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indicates Master Mode Fault. */
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__breakpoint(0); /* Error: Call debugger or replace with custom error handling */
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break;
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}
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}
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/* Test data buffers */
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const uint8_t testdata_out[8] = { 0, 1, 2, 3, 4, 5, 6, 7 };
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uint8_t testdata_in [8];
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void mySPI_Thread(void const* arg)
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{
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ARM_DRIVER_SPI* SPIdrv = &Driver_SPI0;
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osEvent evt;
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#ifdef DEBUG
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ARM_DRIVER_VERSION version;
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ARM_SPI_CAPABILITIES drv_capabilities;
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version = SPIdrv->GetVersion();
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if (version.api < 0x200) /* requires at minimum API version 2.00 or higher */
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{ /* error handling */
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return;
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}
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drv_capabilities = SPIdrv->GetCapabilities();
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if (drv_capabilities.event_mode_fault == 0)
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{ /* error handling */
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return;
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}
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#endif
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/* Initialize the SPI driver */
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SPIdrv->Initialize(mySPI_callback);
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/* Power up the SPI peripheral */
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SPIdrv->PowerControl(ARM_POWER_FULL);
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/* Configure the SPI to Master, 8-bit mode @10000 kBits/sec */
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SPIdrv->Control(ARM_SPI_MODE_MASTER | ARM_SPI_CPOL1_CPHA1 | ARM_SPI_MSB_LSB | ARM_SPI_SS_MASTER_SW | ARM_SPI_DATA_BITS(8), 10000000);
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/* SS line = INACTIVE = HIGH */
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SPIdrv->Control(ARM_SPI_CONTROL_SS, ARM_SPI_SS_INACTIVE);
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/* thread loop */
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while (1)
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{
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/* SS line = ACTIVE = LOW */
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SPIdrv->Control(ARM_SPI_CONTROL_SS, ARM_SPI_SS_ACTIVE);
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/* Transmit some data */
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SPIdrv->Send(testdata_out, sizeof(testdata_out));
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/* Wait for completion */
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evt = osSignalWait(0x01, 100);
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if (evt.status == osEventTimeout) {
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__breakpoint(0); /* Timeout error: Call debugger */
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}
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/* SS line = INACTIVE = HIGH */
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SPIdrv->Control(ARM_SPI_CONTROL_SS, ARM_SPI_SS_INACTIVE);
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/* SS line = ACTIVE = LOW */
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SPIdrv->Control(ARM_SPI_CONTROL_SS, ARM_SPI_SS_ACTIVE);
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/* Receive 8 bytes of reply */
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SPIdrv->Receive(testdata_in, 8);
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evt = osSignalWait(0x01, 100);
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if (evt.status == osEventTimeout) {
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__breakpoint(0); /* Timeout error: Call debugger */
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}
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/* SS line = INACTIVE = HIGH */
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SPIdrv->Control(ARM_SPI_CONTROL_SS, ARM_SPI_SS_INACTIVE);
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}
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}
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