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TriCore TC27D ASC(UART)

HW: ShieldBuddy TC275

정보

BaseFramework에는 Bsp가 기본 라이브러리로 제공되지 않습니다. BaseFramework를 프로젝트 시작으로 사용하는 경우 iLLD를 다운로드 받아 BaseSw를 교체해주시거나 필요한 라이브러리만 추가해주시기 바랍니다.

  • IfxAsclin_cfg.h: ASCLIN on-chip implementation data.
  • IfxAsclin_PinMap.h: ASCLIN I/O map.
  • IfxAsclin_Asc.h: ASCLIN ASC details.
  • IfxAsclin.h: ASCLIN basic functionality.

IfxAsclin_Asc.h​

  • The ASC interface driver provides a default ASCLIN configuration for asynchronous serial communication in 8bit mode, and a set of data transfer routines.
  • Data transfers are buffered by the hardware based FIFOs, and in addition by software based FIFOs with a configurable size. Incoming and outgoing data is transfered in background from/to the ASCLIN peripheral by interrupt service handlers, which are part of this driver as well. This allows a nonblocking communication without stalling the thread(s) from where data is sent and received.

Examples​

정보

폴더를 새로 생성한 경우 clean projet 후, 다시 빌드해야 합니다.

0_Src/AppSw/Tricore/TC27D_lib/Config/Ifx_IntPrioDef.h를 만들고 아래와 같이 작성합니다.

#pragma once

#define IFX_INTPRIO_ASCLIN3_TX 1
#define IFX_INTPRIO_ASCLIN3_RX 2
#define IFX_INTPRIO_ASCLIN3_ER 3

Read/Write​

#include "IfxAsclin_Asc.h"
#include "IfxAsclin_PinMap.h"
#include "IfxCpu.h"
#include "IfxCpu_Irq.h"
#include "IfxScuWdt.h"
#include "Ifx_IntPrioDef.h"
#include "Ifx_Types.h"

IfxCpu_syncEvent cpuSyncEvent = 0;

IfxAsclin_Asc asc;
#define ASC_TX_BUFFER_SIZE 64
static uint8 ascTxBuffer[ASC_TX_BUFFER_SIZE + sizeof(Ifx_Fifo) + 8];
#define ASC_RX_BUFFER_SIZE 64
static uint8 ascRxBuffer[ASC_RX_BUFFER_SIZE + sizeof(Ifx_Fifo) + 8];

IFX_INTERRUPT(asclin3TxISR, 0, IFX_INTPRIO_ASCLIN3_TX) {
    IfxAsclin_Asc_isrTransmit(&asc);
}
IFX_INTERRUPT(asclin3RxISR, 0, IFX_INTPRIO_ASCLIN3_RX) {
    IfxAsclin_Asc_isrReceive(&asc);
}
IFX_INTERRUPT(asclin3ErISR, 0, IFX_INTPRIO_ASCLIN3_ER) {
    IfxAsclin_Asc_isrError(&asc);
}

void ASC3_init(uint32 baudrate) {
    // create module config
    IfxAsclin_Asc_Config ascConfig;

    IfxAsclin_Asc_initModuleConfig(&ascConfig, &MODULE_ASCLIN3);

    // set the desired baudrate
    ascConfig.baudrate.prescaler = 1;
    ascConfig.baudrate.baudrate
        = baudrate;    // FDR values will be calculated in initModule
    // ISR priorities and interrupt target
    ascConfig.interrupt.txPriority = IFX_INTPRIO_ASCLIN3_TX;
    ascConfig.interrupt.rxPriority = IFX_INTPRIO_ASCLIN3_RX;
    ascConfig.interrupt.erPriority = IFX_INTPRIO_ASCLIN3_ER;
    ascConfig.interrupt.typeOfService
        = IfxCpu_Irq_getTos(IfxCpu_getCoreIndex());
    // FIFO configuration
    ascConfig.txBuffer     = &ascTxBuffer;
    ascConfig.txBufferSize = ASC_TX_BUFFER_SIZE;
    ascConfig.rxBuffer     = &ascRxBuffer;
    ascConfig.rxBufferSize = ASC_RX_BUFFER_SIZE;
    // pin configuration
    const IfxAsclin_Asc_Pins pins
        = {NULL,
           IfxPort_InputMode_pullUp,    // CTS pin not used
           &IfxAsclin3_RXD_P32_2_IN,
           IfxPort_InputMode_pullUp,    // Rx pin
           NULL,
           IfxPort_OutputMode_pushPull,    // RTS pin not used
           &IfxAsclin3_TX_P15_7_OUT,
           IfxPort_OutputMode_pushPull,    // Tx pin
           IfxPort_PadDriver_cmosAutomotiveSpeed1};
    ascConfig.pins = &pins;
    IfxAsclin_Asc_initModule(&asc, &ascConfig);
}

int core0_main(void) {
    IfxCpu_enableInterrupts();
    /*
     * !!WATCHDOG0 AND SAFETY WATCHDOG ARE DISABLED HERE!!
     * Enable the watchdog in the demo if it is required and also service the
     * watchdog periodically
     * */
    IfxScuWdt_disableCpuWatchdog(IfxScuWdt_getCpuWatchdogPassword());
    IfxScuWdt_disableSafetyWatchdog(IfxScuWdt_getSafetyWatchdogPassword());

    /* Cpu sync event wait*/
    IfxCpu_emitEvent(&cpuSyncEvent);
    IfxCpu_waitEvent(&cpuSyncEvent, 1);

    ASC3_init(115200);

    char *    hello = "Hello\r\n";
    Ifx_SizeT count = 7;

    IfxAsclin_Asc_write(&asc, hello, &count, TIME_INFINITE);

    while(1) {
        if(IfxAsclin_Asc_getReadCount(&asc)) {
            IfxAsclin_Asc_blockingWrite(&asc, IfxAsclin_Asc_blockingRead(&asc));
        }
    }

    return 1;
}