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器件型号：TMS570LC4357-EP 主题中讨论的其他器件： HALCOGEN
大家好、TI 社区。 我目前正在使用 Hercules 硬件开发套件(TMS570LC4357-EP)
我无法使用 SPI 协议从外部硬件(数据密钥)读取数据、但我测试了 HALCogen 软件中提供的 MibSPI 示例代码(包括环回和 DMA)、并看到了内部寄存器之间的数据传输、这种传输方式非常完美。
我使用下面列出的 SPI 引脚组合连接外部硬件(数据密钥)：
J-10 SPI2扩展连接器-
CLK 的引脚64
CS0-引脚63
SOMI 的引脚59
SIMO 的引脚61
我已经尝试过下面附加的示例 SPI 代码、数据传输在内部工作得非常完美。 但是、我需要使用之前指定的 SPI2引脚排列来接收来自外部硬件(数据密钥)的数据的代码、在这种排列中、我的 HDK 用作主器件、而外部硬件(数据密钥)用作从器件。
/** @file HL_sys_main.c
* @brief Application main file
* @date 11-Dec-2018
* @version 04.07.01
*
* This file contains an empty main function,
* which can be used for the application.
*/
/*
* Copyright (C) 2009-2018 Texas Instruments Incorporated - www.ti.com
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/* USER CODE BEGIN (0) */
/* USER CODE END */
/* Include Files */
#include "HL_sys_common.h"
/* USER CODE BEGIN (1) */
#include "HL_sys_core.h"
#include "HL_sys_dma.h"
#include "HL_spi.h"
//#include "HL_sci.h"
//#include <ra_dbg_level.h>
//#include <ra_stdio.h>
/* USER CODE END */
/** @fn void main(void)
* @brief Application main function
* @note This function is empty by default.
*
* This function is called after startup.
* The user can use this function to implement the application.
*/
/* USER CODE BEGIN (2) */
#define WITH_DMA 0
#define LOOP_BACK 1
#define D_SIZE 128
#define SPI_MASTER spiREG3
#define MASTER_SPI_TX_ADDR ((uint32_t)(&(spiREG3->DAT1)) + 2)
#define MASTER_SPI_RX_ADDR ((uint32_t)(&(spiREG3->BUF)) + 2)
uint16 tx_data[D_SIZE] = {0};
uint16 rx_data[D_SIZE] = {0};
unsigned int MASTER_SPI_DMA_FTCFlag = 0;
unsigned int MASTER_SPI_DMA_HBCFlag = 0;
unsigned int MASTER_SPI_DMA_BTCFlag = 0;
g_dmaCTRL g_dmaCTRLPKT_RX, g_dmaCTRLPKT_TX;
static void loadDataPattern (uint32 psize, uint16* pptr);
#if (WITH_DMA)
static void dmaConfigCtrlTxPacket (uint32 sadd, uint32 dadd, uint16 ElmntCnt, uint16 FrameCnt);
static void dmaConfigCtrlRxPacket (uint32 sadd, uint32 dadd, uint16 ElmntCnt, uint16 FrameCnt);
#endif
/* USER CODE END */
int main(void)
{
/* USER CODE BEGIN (3) */
_enable_IRQ_interrupt_();
loadDataPattern(D_SIZE,&tx_data[0]);
spiInit();
#if (LOOP_BACK)
spiEnableLoopback(SPI_MASTER, Analog_Lbk);
#endif
#if (WITH_DMA)
/* - setting the dma channel to trigger on h/w request */
dmaSetChEnable(DMA_CH0, DMA_HW);
dmaSetChEnable(DMA_CH1, DMA_HW);
dmaReqAssign(DMA_CH0, DMA_REQ14); //SPI3 RX
dmaReqAssign(DMA_CH1, DMA_REQ15); //SPI3 TX
dmaConfigCtrlRxPacket(MASTER_SPI_RX_ADDR, (uint32)rx_data, 1, D_SIZE); //TBC
dmaSetCtrlPacket(DMA_CH0, g_dmaCTRLPKT_RX);
/* - setting dma control packets */
dmaConfigCtrlTxPacket((uint32)tx_data, MASTER_SPI_TX_ADDR, 1, D_SIZE); //TBC
dmaSetCtrlPacket(DMA_CH1, g_dmaCTRLPKT_TX);
dmaEnable();
SPI_MASTER->INT0 |= (0x1 << 16); //SPI_DMAREQ; Enable DMA REQ only after setting the SPIEN bit to 1.
#else
spiDAT1_t dataconfig3_t;
dataconfig3_t.CS_HOLD = FALSE;
dataconfig3_t.WDEL = TRUE;
dataconfig3_t.DFSEL = SPI_FMT_0;
dataconfig3_t.CSNR = 0xFE;
spiTransmitAndReceiveData(SPI_MASTER, &dataconfig3_t, D_SIZE, tx_data,rx_data);
#endif
while(1);
/* USER CODE END */
return 0;
}
/* USER CODE BEGIN (4) */
void dmaGroupANotification(dmaInterrupt_t inttype, uint32 channel)
{
if (inttype == FTC)
{
MASTER_SPI_DMA_FTCFlag = 1;
}
else if (inttype == HBC)
{
MASTER_SPI_DMA_HBCFlag = 1;
}
else if (inttype == BTC)
{
MASTER_SPI_DMA_BTCFlag = 1;
}
}
static void loadDataPattern(uint32 psize, uint16* pptr)
{
int i;
for(i=0;i<psize;i++)
{
pptr[i] = i;
}
}
#if (WITH_DMA)
static void dmaConfigCtrlTxPacket (uint32 sadd, uint32 dadd, uint16 ElmntCnt, uint16 FrameCnt)
{
/* - configuring dma control packets */
g_dmaCTRLPKT_TX.SADD = sadd;
g_dmaCTRLPKT_TX.DADD = dadd;
g_dmaCTRLPKT_TX.CHCTRL = 0;
g_dmaCTRLPKT_TX.FRCNT = FrameCnt;
g_dmaCTRLPKT_TX.ELCNT = ElmntCnt;
g_dmaCTRLPKT_TX.ELDOFFSET = 0;
g_dmaCTRLPKT_TX.ELSOFFSET = 0;
g_dmaCTRLPKT_TX.FRDOFFSET = 0;
g_dmaCTRLPKT_TX.FRSOFFSET = 0;
g_dmaCTRLPKT_TX.PORTASGN = PORTA_READ_PORTB_WRITE;
g_dmaCTRLPKT_TX.RDSIZE = ACCESS_16_BIT;
g_dmaCTRLPKT_TX.WRSIZE = ACCESS_16_BIT;
g_dmaCTRLPKT_TX.TTYPE = FRAME_TRANSFER;
g_dmaCTRLPKT_TX.ADDMODERD = ADDR_INC1;
g_dmaCTRLPKT_TX.ADDMODEWR = ADDR_FIXED;
g_dmaCTRLPKT_TX.AUTOINIT = AUTOINIT_OFF;
}
static void dmaConfigCtrlRxPacket (uint32 sadd, uint32 dadd, uint16 ElmntCnt, uint16 FrameCnt)
{
/* - configuring dma control packets */
g_dmaCTRLPKT_RX.SADD = sadd;
g_dmaCTRLPKT_RX.DADD = dadd;
g_dmaCTRLPKT_RX.CHCTRL = 0;
g_dmaCTRLPKT_RX.FRCNT = FrameCnt;
g_dmaCTRLPKT_RX.ELCNT = ElmntCnt;
g_dmaCTRLPKT_RX.ELDOFFSET = 0;
g_dmaCTRLPKT_RX.ELSOFFSET = 0;
g_dmaCTRLPKT_RX.FRDOFFSET = 0;
g_dmaCTRLPKT_RX.FRSOFFSET = 0;
g_dmaCTRLPKT_RX.PORTASGN = PORTB_READ_PORTA_WRITE;
g_dmaCTRLPKT_RX.RDSIZE = ACCESS_16_BIT;
g_dmaCTRLPKT_RX.WRSIZE = ACCESS_16_BIT;
g_dmaCTRLPKT_RX.TTYPE = FRAME_TRANSFER;
g_dmaCTRLPKT_RX.ADDMODERD = ADDR_FIXED;
g_dmaCTRLPKT_RX.ADDMODEWR = ADDR_INC1;
g_dmaCTRLPKT_RX.AUTOINIT = AUTOINIT_OFF;
}
#endif
/* USER CODE END */
1) 1)请查看上述参考并提交用于 HDK 板和外部硬件(数据密钥)之间数据交换的代码。
2) 2)如何以及在何处调整 SPI 时钟频率？
3)当我探索时钟时、我能够在探测 SPI 时钟引脚时提取50Hz 时钟频率、但我还看到 CS0、SOMI 和 SIMO 引脚上的时钟频率相同。
