Other Parts Discussed in Thread: TM4C123GH6PM
Hello everyone,
As I said in another post, I encountered an issue while customizing spiloopback example for my TivaC. The problem was : I cannot open SSI0 in the task context. I moved initialization in the "main" context and get my handle here. Now I only call Spi_transfer in my task context but it crashes to "Bus fault" as soon as the SPI driver polls the SSI status register.
I use :
- Board : Tiva C TM4C123GXL
- MCU : TM4C123GH6PM => To be confirmed ?
- Ti-RTOS 2.16.0.08 for Tiva C
- XDC Tools 3.31.1.33_core
See attached files for Board initialization and SPI_bWrite called in the task context. Thank you for your help.
/*
* HWISpi.c
*
* Created on: 12 mars 2016
* Author: acali
*/
/*****************************************************************************/
/* INCLUDE FILES */
/*****************************************************************************/
/*********************** Definition of common types **************************/
#include "common.h"
/****************** Sources to be used within the module *********************/
#include "extern.h"
/* TI-RTOS Header files */
#include <ti/drivers/SPI.h>
/* Example/Board Header files */
#include "Board.h"
#include "ERRorapi.h"
/***************** Headers implemented within the module *********************/
#include "alloc.h"
#include "HWISpi.h"
/*****************************************************************************/
/* CONSTANTS, MACROS */
/*****************************************************************************/
#define HWISPI_ku8FIFO_LENGTH ((UCHAR)8)
/*****************************************************************************/
/* TYPES */
/*****************************************************************************/
typedef USHORT HWISpi_tDataType;
/*****************************************************************************/
/* PRIVATE FUNCTIONS PROTOTYPES */
/*****************************************************************************/
/*****************************************************************************/
/* PRIVATE VARIABLES */
/*****************************************************************************/
SPI_Handle udtSpiHandle = (SPI_Handle)NULL;
BOOLEAN bIsInitialized = (BOOLEAN)FALSE;
// Polarity 0 = Idle LOW
// Phase 0 = rising edge
// Phase 1 = falling edge
// Polarity 1 = Idle HIGH
// Phase 0 = falling edge
// Phase 1 = rising edge
/*****************************************************************************/
/* PUBLIC FUNCTIONS */
/*****************************************************************************/
PUBLIC void HWISpi_vidInit(void)
{
SPI_Params params;
Board_initSPI();
SPI_Params_init(¶ms);
params.bitRate = (uint32_t)2000000; // 2MHz
params.dataSize = (uint32_t)8; // 8-bits wide
params.frameFormat = (SPI_FrameFormat)SPI_POL0_PHA0; // Idle Low Rising Edge
params.mode = (SPI_Mode)SPI_MASTER;
params.transferCallbackFxn = (SPI_CallbackFxn)0; // no callback
params.transferMode = (SPI_TransferMode)SPI_MODE_BLOCKING;
params.transferTimeout = (uint32_t)320; // 8 bits @ 2MHz = 4 us = 320 ticks @ MHz 80
/* Initialize SPI handle as default master */
udtSpiHandle = SPI_open(Board_SPI0, ¶ms);
if (udtSpiHandle == (SPI_Handle)NULL)
{
ERR_vidExceptionRaise(__FILE__,__LINE__);
}
else
{
bIsInitialized = (BOOLEAN)TRUE;
}
}
/*****************************************************************************/
/* @Description: */
/* Send characters by the SPI communication */
/*****************************************************************************/
PUBLIC BOOLEAN HWI_bSPIWrite
(
/*@Comment: Data to send by the SPI */
const UCHAR aku8DataToWrite[],
/*@Comment: Data read on the SPI */
UCHAR au8DataToRead[],
/*@Comment: Size of the table of data to send */
/*@Range: 1..255 */
/*@Unit: Byte */
UCHAR u8NbData
)
{
BOOLEAN bReturnValue;
SPI_Transaction masterTransaction;
HWISpi_tDataType audtTxData[HWISPI_ku8FIFO_LENGTH];
HWISpi_tDataType audtRxData[HWISPI_ku8FIFO_LENGTH];
UCHAR u8DataIndex;
if(bIsInitialized == (BOOLEAN)TRUE)
{
if(u8NbData <= HWISPI_ku8FIFO_LENGTH)
{
for(u8DataIndex=(UCHAR)0;u8DataIndex<u8NbData;u8DataIndex++)
{
audtTxData[u8DataIndex] = (HWISpi_tDataType)aku8DataToWrite[u8DataIndex];
}
/* Initialize master SPI transaction structure */
masterTransaction.count = u8NbData;
masterTransaction.txBuf = audtTxData;
masterTransaction.rxBuf = audtRxData;
/* Initiate SPI transfer */
bReturnValue = (BOOLEAN)SPI_transfer(udtSpiHandle, &masterTransaction);
if(bReturnValue != (BOOLEAN)FALSE)
{
for(u8DataIndex=(UCHAR)0;u8DataIndex<u8NbData;u8DataIndex++)
{
au8DataToRead[u8DataIndex] = (UCHAR)audtRxData[u8DataIndex];
}
}
}
else
{
// Data to transmit is too wide
bReturnValue = (BOOLEAN)FALSE;
}
}
else
{
// SPI is not initialized
bReturnValue = (BOOLEAN)FALSE;
}
return bReturnValue;
}
/*****************************************************************************/
/* PRIVATE FUNCTIONS */
/*****************************************************************************/
/*
* Copyright (c) 2015, Texas Instruments Incorporated
* All rights reserved.
*
* 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.
*/
/*
* ======== EK_TM4C123GXL.c ========
* This file is responsible for setting up the board specific items for the
* EK_TM4C123GXL board.
*/
#include <stdint.h>
#include <stdbool.h>
#include <xdc/std.h>
#include <xdc/runtime/Error.h>
#include <xdc/runtime/System.h>
#include <ti/sysbios/family/arm/m3/Hwi.h>
#include <inc/hw_ints.h>
#include <inc/hw_memmap.h>
#include <inc/hw_types.h>
#include <inc/hw_gpio.h>
#include <driverlib/gpio.h>
#include <driverlib/i2c.h>
#include <driverlib/pin_map.h>
#include <driverlib/pwm.h>
#include <driverlib/ssi.h>
#include <driverlib/sysctl.h>
#include <driverlib/uart.h>
#include <driverlib/udma.h>
#include "EK_TM4C123GXL.h"
#ifndef TI_DRIVERS_UART_DMA
#define TI_DRIVERS_UART_DMA 0
#endif
/*
* =============================== DMA ===============================
*/
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_ALIGN(dmaControlTable, 1024)
#elif defined(__IAR_SYSTEMS_ICC__)
#pragma data_alignment=1024
#elif defined(__GNUC__)
__attribute__ ((aligned (1024)))
#endif
static tDMAControlTable dmaControlTable[32];
static bool dmaInitialized = false;
/* Hwi_Struct used in the initDMA Hwi_construct call */
static Hwi_Struct dmaHwiStruct;
/*
* ======== dmaErrorHwi ========
*/
static Void dmaErrorHwi(UArg arg)
{
System_printf("DMA error code: %d\n", uDMAErrorStatusGet());
uDMAErrorStatusClear();
System_abort("DMA error!!");
}
/*
* ======== EK_TM4C123GXL_initDMA ========
*/
void EK_TM4C123GXL_initDMA(void)
{
Error_Block eb;
Hwi_Params hwiParams;
if (!dmaInitialized) {
Error_init(&eb);
Hwi_Params_init(&hwiParams);
Hwi_construct(&(dmaHwiStruct), INT_UDMAERR, dmaErrorHwi,
&hwiParams, &eb);
if (Error_check(&eb)) {
System_abort("Couldn't construct DMA error hwi");
}
SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
uDMAEnable();
uDMAControlBaseSet(dmaControlTable);
dmaInitialized = true;
}
}
/*
* =============================== General ===============================
*/
/*
* ======== EK_TM4C123GXL_initGeneral ========
*/
void EK_TM4C123GXL_initGeneral(void)
{
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
}
/*
* =============================== GPIO ===============================
*/
/* Place into subsections to allow the TI linker to remove items properly */
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_SECTION(GPIOTiva_config, ".const:GPIOTiva_config")
#endif
#include <ti/drivers/GPIO.h>
#include <ti/drivers/gpio/GPIOTiva.h>
/*
* Array of Pin configurations
* NOTE: The order of the pin configurations must coincide with what was
* defined in EK_TM4C123GXL.h
* NOTE: Pins not used for interrupts should be placed at the end of the
* array. Callback entries can be omitted from callbacks array to
* reduce memory usage.
*/
GPIO_PinConfig gpioPinConfigs[] = {
/* Input pins */
/* EK_TM4C123GXL_GPIO_SW1 */
GPIOTiva_PF_4 | GPIO_CFG_IN_PU | GPIO_CFG_IN_INT_RISING,
/* EK_TM4C123GXL_GPIO_SW2 */
GPIOTiva_PF_0 | GPIO_CFG_IN_PU | GPIO_CFG_IN_INT_RISING,
/* Output pins */
/* EK_TM4C123GXL_LED_RED */
GPIOTiva_PF_1 | GPIO_CFG_OUT_STD | GPIO_CFG_OUT_STR_HIGH | GPIO_CFG_OUT_LOW,
/* EK_TM4C123GXL_LED_BLUE */
GPIOTiva_PF_2 | GPIO_CFG_OUT_STD | GPIO_CFG_OUT_STR_HIGH | GPIO_CFG_OUT_LOW,
/* EK_TM4C123GXL_LED_GREEN */
GPIOTiva_PF_3 | GPIO_CFG_OUT_STD | GPIO_CFG_OUT_STR_HIGH | GPIO_CFG_OUT_LOW
};
/*
* Array of callback function pointers
* NOTE: The order of the pin configurations must coincide with what was
* defined in EK_TM4C123GXL.h
* NOTE: Pins not used for interrupts can be omitted from callbacks array to
* reduce memory usage (if placed at end of gpioPinConfigs array).
*/
GPIO_CallbackFxn gpioCallbackFunctions[] = {
NULL, /* EK_TM4C123GXL_GPIO_SW1 */
NULL /* EK_TM4C123GXL_GPIO_SW2 */
};
/* The device-specific GPIO_config structure */
const GPIOTiva_Config GPIOTiva_config = {
.pinConfigs = (GPIO_PinConfig *)gpioPinConfigs,
.callbacks = (GPIO_CallbackFxn *)gpioCallbackFunctions,
.numberOfPinConfigs = sizeof(gpioPinConfigs)/sizeof(GPIO_PinConfig),
.numberOfCallbacks = sizeof(gpioCallbackFunctions)/sizeof(GPIO_CallbackFxn),
.intPriority = (~0)
};
/*
* ======== EK_TM4C123GXL_initGPIO ========
*/
void EK_TM4C123GXL_initGPIO(void)
{
/* EK_TM4C123GXL_GPIO_SW2 - PF0 requires unlocking before configuration */
HWREG(GPIO_PORTF_BASE + GPIO_O_LOCK) = GPIO_LOCK_KEY;
HWREG(GPIO_PORTF_BASE + GPIO_O_CR) |= GPIO_PIN_0;
GPIOPinTypeGPIOInput(GPIO_PORTF_BASE, GPIO_PIN_0);
/* Initialize peripheral and pins */
GPIO_init();
}
/*
* =============================== I2C ===============================
*/
/* Place into subsections to allow the TI linker to remove items properly */
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_SECTION(I2C_config, ".const:I2C_config")
#pragma DATA_SECTION(i2cTivaHWAttrs, ".const:i2cTivaHWAttrs")
#endif
#include <ti/drivers/I2C.h>
#include <ti/drivers/i2c/I2CTiva.h>
I2CTiva_Object i2cTivaObjects[EK_TM4C123GXL_I2CCOUNT];
const I2CTiva_HWAttrs i2cTivaHWAttrs[EK_TM4C123GXL_I2CCOUNT] = {
{
.baseAddr = I2C1_BASE,
.intNum = INT_I2C1,
.intPriority = (~0)
},
{
.baseAddr = I2C3_BASE,
.intNum = INT_I2C3,
.intPriority = (~0)
},
};
const I2C_Config I2C_config[] = {
{
.fxnTablePtr = &I2CTiva_fxnTable,
.object = &i2cTivaObjects[0],
.hwAttrs = &i2cTivaHWAttrs[0]
},
{
.fxnTablePtr = &I2CTiva_fxnTable,
.object = &i2cTivaObjects[1],
.hwAttrs = &i2cTivaHWAttrs[1]
},
{NULL, NULL, NULL}
};
/*
* ======== EK_TM4C123GXL_initI2C ========
*/
void EK_TM4C123GXL_initI2C(void)
{
/* I2C1 Init */
/* Enable the peripheral */
SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C1);
/* Configure the appropriate pins to be I2C instead of GPIO. */
GPIOPinConfigure(GPIO_PA6_I2C1SCL);
GPIOPinConfigure(GPIO_PA7_I2C1SDA);
GPIOPinTypeI2CSCL(GPIO_PORTA_BASE, GPIO_PIN_6);
GPIOPinTypeI2C(GPIO_PORTA_BASE, GPIO_PIN_7);
/* I2C3 Init */
/*
* NOTE: TI-RTOS examples configure pins PD0 & PD1 for SSI3 or I2C3. Thus,
* a conflict occurs when the I2C & SPI drivers are used simultaneously in
* an application. Modify the pin mux settings in this file and resolve the
* conflict before running your the application.
*/
/* Enable the peripheral */
SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C3);
/* Configure the appropriate pins to be I2C instead of GPIO. */
GPIOPinConfigure(GPIO_PD0_I2C3SCL);
GPIOPinConfigure(GPIO_PD1_I2C3SDA);
GPIOPinTypeI2CSCL(GPIO_PORTD_BASE, GPIO_PIN_0);
GPIOPinTypeI2C(GPIO_PORTD_BASE, GPIO_PIN_1);
/*
* These GPIOs are connected to PD0 and PD1 and need to be brought into a
* GPIO input state so they don't interfere with I2C communications.
*/
GPIOPinTypeGPIOInput(GPIO_PORTB_BASE, GPIO_PIN_6);
GPIOPinTypeGPIOInput(GPIO_PORTB_BASE, GPIO_PIN_7);
I2C_init();
}
/*
* =============================== PWM ===============================
*/
/* Place into subsections to allow the TI linker to remove items properly */
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_SECTION(PWM_config, ".const:PWM_config")
#pragma DATA_SECTION(pwmTivaHWAttrs, ".const:pwmTivaHWAttrs")
#endif
#include <ti/drivers/PWM.h>
#include <ti/drivers/pwm/PWMTiva.h>
PWMTiva_Object pwmTivaObjects[EK_TM4C123GXL_PWMCOUNT];
const PWMTiva_HWAttrs pwmTivaHWAttrs[EK_TM4C123GXL_PWMCOUNT] = {
{
.baseAddr = PWM1_BASE,
.pwmOutput = PWM_OUT_6,
.pwmGenOpts = PWM_GEN_MODE_DOWN | PWM_GEN_MODE_DBG_RUN
},
{
.baseAddr = PWM1_BASE,
.pwmOutput = PWM_OUT_7,
.pwmGenOpts = PWM_GEN_MODE_DOWN | PWM_GEN_MODE_DBG_RUN
}
};
const PWM_Config PWM_config[] = {
{
.fxnTablePtr = &PWMTiva_fxnTable,
.object = &pwmTivaObjects[0],
.hwAttrs = &pwmTivaHWAttrs[0]
},
{
.fxnTablePtr = &PWMTiva_fxnTable,
.object = &pwmTivaObjects[1],
.hwAttrs = &pwmTivaHWAttrs[1]
},
{NULL, NULL, NULL}
};
/*
* ======== EK_TM4C123GXL_initPWM ========
*/
void EK_TM4C123GXL_initPWM(void)
{
/* Enable PWM peripherals */
SysCtlPeripheralEnable(SYSCTL_PERIPH_PWM1);
/*
* Enable PWM output on GPIO pins. Board_LED1 and Board_LED2 are now
* controlled by PWM peripheral - Do not use GPIO APIs.
*/
GPIOPinConfigure(GPIO_PF2_M1PWM6);
GPIOPinConfigure(GPIO_PF3_M1PWM7);
GPIOPinTypePWM(GPIO_PORTF_BASE, GPIO_PIN_2 |GPIO_PIN_3);
PWM_init();
}
/*
* =============================== SDSPI ===============================
*/
/* Place into subsections to allow the TI linker to remove items properly */
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_SECTION(SDSPI_config, ".const:SDSPI_config")
#pragma DATA_SECTION(sdspiTivaHWattrs, ".const:sdspiTivaHWattrs")
#endif
#include <ti/drivers/SDSPI.h>
#include <ti/drivers/sdspi/SDSPITiva.h>
SDSPITiva_Object sdspiTivaObjects[EK_TM4C123GXL_SDSPICOUNT];
const SDSPITiva_HWAttrs sdspiTivaHWattrs[EK_TM4C123GXL_SDSPICOUNT] = {
{
.baseAddr = SSI2_BASE,
.portSCK = GPIO_PORTB_BASE,
.pinSCK = GPIO_PIN_4,
.portMISO = GPIO_PORTB_BASE,
.pinMISO = GPIO_PIN_6,
.portMOSI = GPIO_PORTB_BASE,
.pinMOSI = GPIO_PIN_7,
.portCS = GPIO_PORTA_BASE,
.pinCS = GPIO_PIN_5,
}
};
const SDSPI_Config SDSPI_config[] = {
{
.fxnTablePtr = &SDSPITiva_fxnTable,
.object = &sdspiTivaObjects[0],
.hwAttrs = &sdspiTivaHWattrs[0]
},
{NULL, NULL, NULL}
};
/*
* ======== EK_TM4C123GXL_initSDSPI ========
*/
void EK_TM4C123GXL_initSDSPI(void)
{
/* Enable the peripherals used by the SD Card */
SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI2);
/* Configure pad settings */
GPIOPadConfigSet(GPIO_PORTB_BASE,
GPIO_PIN_4 | GPIO_PIN_7,
GPIO_STRENGTH_4MA, GPIO_PIN_TYPE_STD);
GPIOPadConfigSet(GPIO_PORTB_BASE,
GPIO_PIN_6,
GPIO_STRENGTH_4MA, GPIO_PIN_TYPE_STD_WPU);
GPIOPadConfigSet(GPIO_PORTA_BASE,
GPIO_PIN_5,
GPIO_STRENGTH_4MA, GPIO_PIN_TYPE_STD);
GPIOPinConfigure(GPIO_PB4_SSI2CLK);
GPIOPinConfigure(GPIO_PB6_SSI2RX);
GPIOPinConfigure(GPIO_PB7_SSI2TX);
/*
* These GPIOs are connected to PB6 and PB7 and need to be brought into a
* GPIO input state so they don't interfere with SPI communications.
*/
GPIOPinTypeGPIOInput(GPIO_PORTD_BASE, GPIO_PIN_0);
GPIOPinTypeGPIOInput(GPIO_PORTD_BASE, GPIO_PIN_1);
SDSPI_init();
}
/*
* =============================== SPI ===============================
*/
/* Place into subsections to allow the TI linker to remove items properly */
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_SECTION(SPI_config, ".const:SPI_config")
#pragma DATA_SECTION(spiTivaDMAHWAttrs, ".const:spiTivaDMAHWAttrs")
#endif
#include <ti/drivers/SPI.h>
#include <ti/drivers/spi/SPITivaDMA.h>
SPITivaDMA_Object spiTivaDMAObjects[EK_TM4C123GXL_SPICOUNT];
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_ALIGN(spiTivaDMAscratchBuf, 32)
#elif defined(__IAR_SYSTEMS_ICC__)
#pragma data_alignment=32
#elif defined(__GNUC__)
__attribute__ ((aligned (32)))
#endif
uint32_t spiTivaDMAscratchBuf[EK_TM4C123GXL_SPICOUNT];
const SPITivaDMA_HWAttrs spiTivaDMAHWAttrs[EK_TM4C123GXL_SPICOUNT] = {
{
.baseAddr = SSI0_BASE,
.intNum = INT_SSI0,
.intPriority = (~0),
.scratchBufPtr = &spiTivaDMAscratchBuf[0],
.defaultTxBufValue = 0,
.rxChannelIndex = UDMA_CHANNEL_SSI0RX,
.txChannelIndex = UDMA_CHANNEL_SSI0TX,
.channelMappingFxn = uDMAChannelAssign,
.rxChannelMappingFxnArg = UDMA_CH10_SSI0RX,
.txChannelMappingFxnArg = UDMA_CH11_SSI0TX
},
{
.baseAddr = SSI2_BASE,
.intNum = INT_SSI2,
.intPriority = (~0),
.scratchBufPtr = &spiTivaDMAscratchBuf[1],
.defaultTxBufValue = 0,
.rxChannelIndex = UDMA_SEC_CHANNEL_UART2RX_12,
.txChannelIndex = UDMA_SEC_CHANNEL_UART2TX_13,
.channelMappingFxn = uDMAChannelAssign,
.rxChannelMappingFxnArg = UDMA_CH12_SSI2RX,
.txChannelMappingFxnArg = UDMA_CH13_SSI2TX
},
{
.baseAddr = SSI3_BASE,
.intNum = INT_SSI3,
.intPriority = (~0),
.scratchBufPtr = &spiTivaDMAscratchBuf[2],
.defaultTxBufValue = 0,
.rxChannelIndex = UDMA_SEC_CHANNEL_TMR2A_14,
.txChannelIndex = UDMA_SEC_CHANNEL_TMR2B_15,
.channelMappingFxn = uDMAChannelAssign,
.rxChannelMappingFxnArg = UDMA_CH14_SSI3RX,
.txChannelMappingFxnArg = UDMA_CH15_SSI3TX
}
};
const SPI_Config SPI_config[] = {
{
.fxnTablePtr = &SPITivaDMA_fxnTable,
.object = &spiTivaDMAObjects[0],
.hwAttrs = &spiTivaDMAHWAttrs[0]
},
{
.fxnTablePtr = &SPITivaDMA_fxnTable,
.object = &spiTivaDMAObjects[1],
.hwAttrs = &spiTivaDMAHWAttrs[1]
},
{
.fxnTablePtr = &SPITivaDMA_fxnTable,
.object = &spiTivaDMAObjects[2],
.hwAttrs = &spiTivaDMAHWAttrs[2]
},
{NULL, NULL, NULL},
};
/*
* ======== EK_TM4C123GXL_initSPI ========
*/
void EK_TM4C123GXL_initSPI(void)
{
/* SPI0 */
SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI0);
/* Need to unlock PF0 */
GPIOPinConfigure(GPIO_PA2_SSI0CLK);
GPIOPinConfigure(GPIO_PA3_SSI0FSS);
GPIOPinConfigure(GPIO_PA4_SSI0RX);
GPIOPinConfigure(GPIO_PA5_SSI0TX);
GPIOPinTypeSSI(GPIO_PORTA_BASE, GPIO_PIN_2 | GPIO_PIN_3 |
GPIO_PIN_4 | GPIO_PIN_5);
/* SSI2 */
SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI2);
GPIOPinConfigure(GPIO_PB4_SSI2CLK);
GPIOPinConfigure(GPIO_PB5_SSI2FSS);
GPIOPinConfigure(GPIO_PB6_SSI2RX);
GPIOPinConfigure(GPIO_PB7_SSI2TX);
GPIOPinTypeSSI(GPIO_PORTB_BASE, GPIO_PIN_4 | GPIO_PIN_5 |
GPIO_PIN_6 | GPIO_PIN_7);
/* SSI3 */
/*
* NOTE: TI-RTOS examples configure pins PD0 & PD1 for SSI3 or I2C3. Thus,
* a conflict occurs when the I2C & SPI drivers are used simultaneously in
* an application. Modify the pin mux settings in this file and resolve the
* conflict before running your the application.
*/
SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI3);
GPIOPinConfigure(GPIO_PD0_SSI3CLK);
GPIOPinConfigure(GPIO_PD1_SSI3FSS);
GPIOPinConfigure(GPIO_PD2_SSI3RX);
GPIOPinConfigure(GPIO_PD3_SSI3TX);
GPIOPinTypeSSI(GPIO_PORTD_BASE, GPIO_PIN_0 | GPIO_PIN_1 |
GPIO_PIN_2 | GPIO_PIN_3);
EK_TM4C123GXL_initDMA();
SPI_init();
}
/*
* =============================== UART ===============================
*/
/* Place into subsections to allow the TI linker to remove items properly */
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_SECTION(UART_config, ".const:UART_config")
#pragma DATA_SECTION(uartTivaHWAttrs, ".const:uartTivaHWAttrs")
#endif
#include <ti/drivers/UART.h>
#if TI_DRIVERS_UART_DMA
#include <ti/drivers/uart/UARTTivaDMA.h>
UARTTivaDMA_Object uartTivaObjects[EK_TM4C123GXL_UARTCOUNT];
const UARTTivaDMA_HWAttrs uartTivaHWAttrs[EK_TM4C123GXL_UARTCOUNT] = {
{
.baseAddr = UART0_BASE,
.intNum = INT_UART0,
.intPriority = (~0),
.rxChannelIndex = UDMA_CH8_UART0RX,
.txChannelIndex = UDMA_CH9_UART0TX,
}
};
const UART_Config UART_config[] = {
{
.fxnTablePtr = &UARTTivaDMA_fxnTable,
.object = &uartTivaObjects[0],
.hwAttrs = &uartTivaHWAttrs[0]
},
{NULL, NULL, NULL}
};
#else
#include <ti/drivers/uart/UARTTiva.h>
UARTTiva_Object uartTivaObjects[EK_TM4C123GXL_UARTCOUNT];
unsigned char uartTivaRingBuffer[EK_TM4C123GXL_UARTCOUNT][32];
/* UART configuration structure */
const UARTTiva_HWAttrs uartTivaHWAttrs[EK_TM4C123GXL_UARTCOUNT] = {
{
.baseAddr = UART0_BASE,
.intNum = INT_UART0,
.intPriority = (~0),
.flowControl = UART_FLOWCONTROL_NONE,
.ringBufPtr = uartTivaRingBuffer[0],
.ringBufSize = sizeof(uartTivaRingBuffer[0])
}
};
const UART_Config UART_config[] = {
{
.fxnTablePtr = &UARTTiva_fxnTable,
.object = &uartTivaObjects[0],
.hwAttrs = &uartTivaHWAttrs[0]
},
{NULL, NULL, NULL}
};
#endif /* TI_DRIVERS_UART_DMA */
/*
* ======== EK_TM4C123GXL_initUART ========
*/
void EK_TM4C123GXL_initUART(void)
{
/* Enable and configure the peripherals used by the uart. */
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
/* Initialize the UART driver */
#if TI_DRIVERS_UART_DMA
EK_TM4C123GXL_initDMA();
#endif
UART_init();
}
/*
* =============================== USB ===============================
*/
/*
* ======== EK_TM4C123GXL_initUSB ========
* This function just turns on the USB
*/
void EK_TM4C123GXL_initUSB(EK_TM4C123GXL_USBMode usbMode)
{
/* Enable the USB peripheral and PLL */
SysCtlPeripheralEnable(SYSCTL_PERIPH_USB0);
SysCtlUSBPLLEnable();
/* Setup pins for USB operation */
GPIOPinTypeUSBAnalog(GPIO_PORTD_BASE, GPIO_PIN_4 | GPIO_PIN_5);
if (usbMode == EK_TM4C123GXL_USBHOST) {
System_abort("USB host not supported\n");
}
}
/*
* =============================== Watchdog ===============================
*/
/* Place into subsections to allow the TI linker to remove items properly */
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_SECTION(Watchdog_config, ".const:Watchdog_config")
#pragma DATA_SECTION(watchdogTivaHWAttrs, ".const:watchdogTivaHWAttrs")
#endif
#include <ti/drivers/Watchdog.h>
#include <ti/drivers/watchdog/WatchdogTiva.h>
WatchdogTiva_Object watchdogTivaObjects[EK_TM4C123GXL_WATCHDOGCOUNT];
const WatchdogTiva_HWAttrs watchdogTivaHWAttrs[EK_TM4C123GXL_WATCHDOGCOUNT] = {
{
.baseAddr = WATCHDOG0_BASE,
.intNum = INT_WATCHDOG,
.intPriority = (~0),
.reloadValue = 80000000 // 1 second period at default CPU clock freq
},
};
const Watchdog_Config Watchdog_config[] = {
{
.fxnTablePtr = &WatchdogTiva_fxnTable,
.object = &watchdogTivaObjects[0],
.hwAttrs = &watchdogTivaHWAttrs[0]
},
{NULL, NULL, NULL},
};
/*
* ======== EK_TM4C123GXL_initWatchdog ========
*
* NOTE: To use the other watchdog timer with base address WATCHDOG1_BASE,
* an additional function call may need be made to enable PIOSC. Enabling
* WDOG1 does not do this. Enabling another peripheral that uses PIOSC
* such as ADC0 or SSI0, however, will do so. Example:
*
* SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);
* SysCtlPeripheralEnable(SYSCTL_PERIPH_WDOG1);
*
* See the following forum post for more information:
* http://e2e.ti.com/support/microcontrollers/stellaris_arm_cortex-m3_microcontroller/f/471/p/176487/654390.aspx#654390
*/
void EK_TM4C123GXL_initWatchdog(void)
{
/* Enable peripherals used by Watchdog */
SysCtlPeripheralEnable(SYSCTL_PERIPH_WDOG0);
Watchdog_init();
}
/*
* =============================== WiFi ===============================
*/
/* Place into subsections to allow the TI linker to remove items properly */
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_SECTION(WiFi_config, ".const:WiFi_config")
#pragma DATA_SECTION(wiFiCC3100HWAttrs, ".const:wiFiCC3100HWAttrs")
#endif
#include <ti/drivers/WiFi.h>
#include <ti/drivers/wifi/WiFiCC3100.h>
WiFiCC3100_Object wiFiCC3100Objects[EK_TM4C123GXL_WIFICOUNT];
const WiFiCC3100_HWAttrs wiFiCC3100HWAttrs[EK_TM4C123GXL_WIFICOUNT] = {
{
.irqPort = GPIO_PORTB_BASE,
.irqPin = GPIO_PIN_2,
.irqIntNum = INT_GPIOB,
.csPort = GPIO_PORTE_BASE,
.csPin = GPIO_PIN_0,
.enPort = GPIO_PORTE_BASE,
.enPin = GPIO_PIN_4
}
};
const WiFi_Config WiFi_config[] = {
{
.fxnTablePtr = &WiFiCC3100_fxnTable,
.object = &wiFiCC3100Objects[0],
.hwAttrs = &wiFiCC3100HWAttrs[0]
},
{NULL,NULL, NULL},
};
/*
* ======== EK_TM4C123GXL_initWiFi ========
*/
void EK_TM4C123GXL_initWiFi(void)
{
/* Configure EN & CS pins to disable CC3100 */
GPIOPinTypeGPIOOutput(GPIO_PORTE_BASE, GPIO_PIN_0 | GPIO_PIN_4);
GPIOPinWrite(GPIO_PORTE_BASE, GPIO_PIN_0, GPIO_PIN_0);
GPIOPinWrite(GPIO_PORTE_BASE, GPIO_PIN_4, 0);
/* Configure SSI2 for CC3100 */
SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI2);
GPIOPinConfigure(GPIO_PB4_SSI2CLK);
GPIOPinConfigure(GPIO_PB6_SSI2RX);
GPIOPinConfigure(GPIO_PB7_SSI2TX);
GPIOPinTypeSSI(GPIO_PORTB_BASE, GPIO_PIN_4 | GPIO_PIN_6 | GPIO_PIN_7);
/* Configure IRQ pin */
GPIOPinTypeGPIOInput(GPIO_PORTB_BASE, GPIO_PIN_2);
GPIOPadConfigSet(GPIO_PORTB_BASE, GPIO_PIN_2, GPIO_STRENGTH_2MA,
GPIO_PIN_TYPE_STD_WPD);
GPIOIntTypeSet(GPIO_PORTB_BASE, GPIO_PIN_2, GPIO_RISING_EDGE);
SPI_init();
EK_TM4C123GXL_initDMA();
WiFi_init();
}
