Other Parts Discussed in Thread: ADS1255, TM4C123GH6PM
Hi,
I'm trying to read two ADC using DMA, but I'm not being successful with the second ADC, I get data only from the first one, and they pretty much have the same configuration.
I've attached the .c file where we do the configuration, and for the moment the w/r.
a few points to note:
the microprocessor is the TM4C123G6HPM
and the ADCs are the ADS1255
SSI1 is working;
SSI2 is the one not wirking;
first adc is referenced as U20
and the second is referenced as U21
line 327: we declared FP for the data ready. which calls the SendDataU20 (line 158) and SendDataU21 (line 185)
line 82: U20 interrupt
line 119: U21 interrupt
line 234: is where the DMA is initialized
and starting on line 766 there is the SPI/DMA initialization.
I've also noticed that only one of the interrupts is called, and it seen to be always the last one declared, so in this case:
Hwi_construct(&(hwiStruct), INT_SSI2, B134_332_SSI1U21IntHandler,
&hwiParams, &eb);
if (Error_check(&eb)) {
System_abort("Couldn't create SSI1 U21 Int Handler");
}
on line 256
is someone has some idea/comment/tip I would appreciate.
Thanks for your help.
Eduardo Pires
/*
* B134_332.c
*
* Created on: 16.01.2015
* Author: EPI
*/
#ifdef B134_332_01
#include <stdint.h>
#include <stdbool.h>
#include <inc/hw_memmap.h>
#include <inc/hw_types.h>
#include <inc/hw_ints.h>
#include <inc/hw_gpio.h>
#include <inc/hw_pwm.h>
#include <inc/hw_ssi.h>
#include <driverlib/gpio.h>
#include <driverlib/sysctl.h>
#include <driverlib/i2c.h>
#include <driverlib/ssi.h>
#include <driverlib/udma.h>
#include <driverlib/pin_map.h>
#include <xdc/std.h>
#include <xdc/cfg/global.h>
#include <xdc/runtime/Error.h>
#include <xdc/runtime/System.h>
#include <ti/sysbios/family/arm/m3/Hwi.h>
#include "B134_332_01.h"
///MACROS
#define PWM_GEN_BADDR(_mod_, _gen_) \
((_mod_) + (_gen_))
/*********************************************************************************************************************//**
* =============================== DMA ===============================
*************************************************************************************************************************/
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_ALIGN(B134_332_DMAControlTable, 1024)
#elif defined(__IAR_SYSTEMS_ICC__)
#pragma data_alignment=1024
#elif defined(__GNUC__)
__attribute__ ((aligned (1024)))
#endif
static tDMAControlTable B134_332_DMAControlTable[32];
static bool DMA_initialized = false;
/*! Hwi_Struct used in the initDMA Hwi_construct call */
static Hwi_Struct hwiStruct;
/*********************************************************************************************************************//**
* B134_332_errorDMAHwi
*************************************************************************************************************************/
static Void B134_332_errorDMAHwi(UArg arg)
{
System_printf("DMA error code: %d\n", uDMAErrorStatusGet());
uDMAErrorStatusClear();
System_abort("DMA error!!");
}
//*****************************************************************************
//
// The count of SSI0 buffers filled
//
//*****************************************************************************
static uint32_t g_ui32SSIRxCount = 0;
static uint32_t g_ui32SSITxCount = 0;
#define SSI_BUFFER_SIZE 3
// buffers
static uint8_t g_ui8TxBufA[3];
static uint8_t g_ui8RxBufA[3];
static uint8_t g_ui8RxBufB[3];
static uint8_t g_ui8TxBufB[3];
//uint32_t rx[3];
static void B134_332_SSI1U20IntHandler(UArg arg)
{
uint32_t ui32Status;
uint32_t ui32Mode;
// get the interrupt status
ui32Status = SSIIntStatus(SSI1_BASE, 0);
//check if TX is done
if(ui32Status & SSI_TXFF) {
ui32Mode = uDMAChannelModeGet(UDMA_CHANNEL_SSI1TX);
//clear the uDMA Transmit complete bit
SSIDMADisable(SSI1_BASE, SSI_DMA_TX);
SSIIntClear(SSI1_BASE, SSI_TXFF);
if(ui32Mode == UDMA_MODE_STOP)
{
//disable uDMA
SSIDMADisable(SSI1_BASE, SSI_DMA_RX);
//disable interrupt
SSIIntDisable(SSI1_BASE,SSI_TXEOT | //transmit fifo is empty
SSI_DMATX | //DMA Transmit complete
SSI_DMARX | //DMA Receive complete
SSI_TXFF | //TX FIFO half full or less
SSI_RXFF | //RX FIFO half full or more
SSI_RXTO | //rx timeout
SSI_RXOR); //rx error
// counter
g_ui32SSIRxCount++;
}
}
}
static void B134_332_SSI1U21IntHandler(UArg arg)
{
uint32_t ui32Status;
uint32_t ui32Mode;
// get the interrupt status
ui32Status = SSIIntStatus(SSI2_BASE, 0);
//check if TX is done
if(ui32Status & SSI_TXFF) {
ui32Mode = uDMAChannelModeGet(UDMA_SEC_CHANNEL_UART2TX_13);
//clear the uDMA Transmit complete bit
SSIDMADisable(SSI2_BASE, SSI_DMA_TX);
SSIIntClear(SSI2_BASE, SSI_TXFF);
if(ui32Mode == UDMA_MODE_STOP)
{
//while(uDMAChannelModeGet(UDMA_SEC_CHANNEL_UART2RX_12) != UDMA_MODE_STOP);
//disable uDMA
SSIDMADisable(SSI2_BASE, SSI_DMA_RX);
//disable interrupt
SSIIntDisable(SSI2_BASE,SSI_TXEOT | //transmit fifo is empty
SSI_DMATX | //DMA Transmit complete
SSI_DMARX | //DMA Receive complete
SSI_TXFF | //TX FIFO half full or less
SSI_RXFF | //RX FIFO half full or more
SSI_RXTO | //rx timeout
SSI_RXOR); //rx error
// counter
g_ui32SSIRxCount++;
}
}
}
void SendDataU20()
{
// counter
g_ui32SSITxCount++;
//clear the uDMA Transmit complete bit
SSIIntClear(SSI1_BASE, SSI_DMATX | SSI_RXFF | SSI_RXOR | SSI_TXFF);
// enable the ssi interrupts
SSIIntEnable(SSI1_BASE, SSI_RXFF);
SSIIntEnable(SSI1_BASE, SSI_TXFF);
// Set up the transfer parameters for the SSI0RX Channel
uDMAChannelTransferSet(UDMA_CHANNEL_SSI1RX | UDMA_PRI_SELECT, UDMA_MODE_AUTO, (void *)(SSI1_BASE + SSI_O_DR), &g_ui8RxBufA[0], sizeof(g_ui8RxBufA));
uDMAChannelEnable(UDMA_CHANNEL_SSI1RX);
SSIDMAEnable(SSI1_BASE, SSI_DMA_RX);
// Set up the transfer parameters for the SSI0TX Channel
uDMAChannelTransferSet(UDMA_CHANNEL_SSI1TX, UDMA_MODE_BASIC, &g_ui8TxBufA[0], (void *)(SSI1_BASE + SSI_O_DR), sizeof(g_ui8TxBufA));
// enable the uDMA channel
uDMAChannelEnable(UDMA_CHANNEL_SSI1TX);
//enable SSI DMA
SSIDMAEnable(SSI1_BASE, SSI_DMA_TX);
}
void SendDataU21()
{
// counter
g_ui32SSITxCount++;
//clear the uDMA Transmit complete bit
SSIIntClear(SSI2_BASE, SSI_RXFF | SSI_RXOR | SSI_DMATX | SSI_TXFF); //SSI_TXFF
// enable the ssi interrupts
SSIIntEnable(SSI2_BASE, SSI_RXFF);
SSIIntEnable(SSI2_BASE, SSI_TXFF);
//while(SSIBusy(SSI2_BASE));
// Set up the transfer parameters for the SSI0RX Channel
uDMAChannelTransferSet(UDMA_SEC_CHANNEL_UART2RX_12 | UDMA_PRI_SELECT, UDMA_MODE_AUTO, (void *)(SSI2_BASE + SSI_O_DR), &g_ui8RxBufB[0], sizeof(g_ui8RxBufB));
uDMAChannelEnable(UDMA_SEC_CHANNEL_UART2RX_12);
SSIDMAEnable(SSI2_BASE, SSI_DMA_RX);
// Set up the transfer parameters for the SSI0TX Channel
uDMAChannelTransferSet(UDMA_SEC_CHANNEL_UART2TX_13 | UDMA_PRI_SELECT, UDMA_MODE_BASIC, &g_ui8TxBufB[0], (void *)(SSI2_BASE + SSI_O_DR), sizeof(g_ui8TxBufB));
// enable the uDMA channel
uDMAChannelEnable(UDMA_SEC_CHANNEL_UART2TX_13);
//enable SSI DMA
SSIDMAEnable(SSI2_BASE, SSI_DMA_TX);
/*int i=0;
// 0000 0000
SSIDataPut(SSI2_BASE, 0b00000000);
while(SSIBusy(SSI2_BASE));
for(i=0; i<60;i++); // wait
SSIDataPut(SSI2_BASE, 0b00000000);
while(SSIBusy(SSI2_BASE));
for(i=0; i<60;i++); // wait
SSIDataPut(SSI2_BASE, 0b00000000);
while(SSIBusy(SSI2_BASE));
for(i=0; i<60;i++); // wait
// wait 7us
for(i=0; i < 3; i++)
SSIDataGet(SSI2_BASE, &g_ui8RxBufB[i]);*/
}
/*********************************************************************************************************************//**
* B134_332_initDMA
*************************************************************************************************************************/
void B134_332_initDMA(void)
{
Error_Block eb;
Hwi_Params hwiParams;
if (!DMA_initialized) {
Error_init(&eb);
Hwi_Params_init(&hwiParams);
Hwi_construct(&(hwiStruct), INT_UDMAERR, B134_332_errorDMAHwi,
&hwiParams, &eb);
if (Error_check(&eb)) {
System_abort("Couldn't create DMA error hwi");
}
Hwi_construct(&(hwiStruct), INT_SSI1, B134_332_SSI1U20IntHandler,
&hwiParams, &eb);
if (Error_check(&eb)) {
System_abort("Couldn't create SSI1 U20 Int Handler");
}
Hwi_construct(&(hwiStruct), INT_SSI2, B134_332_SSI1U21IntHandler,
&hwiParams, &eb);
if (Error_check(&eb)) {
System_abort("Couldn't create SSI1 U21 Int Handler");
}
SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
uDMAEnable();
uDMAControlBaseSet(B134_332_DMAControlTable);
DMA_initialized = true;
}
}
/*********************************************************************************************************************//**
* =============================== General ===============================
*************************************************************************************************************************/
/*********************************************************************************************************************//**
* B134_332_initGeneral
*************************************************************************************************************************/
void B134_332_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(GPIO_config, ".const:GPIO_config")
#pragma DATA_SECTION(gpioHWAttrs, ".const:gpioHWAttrs")
#endif
#include <ti/drivers/GPIO.h>
/*! Callback functions for the GPIO interrupt example. */
void gpioADS1255U20Fxn(void);
void gpioADS1255U21Fxn(void);
void gpioADS1146Fxn(void);
/*! GPIO configuration structure */
const GPIO_HWAttrs gpioHWAttrs[B134_332_GPIOCOUNT] = {
{GPIO_PORTE_BASE, GPIO_PIN_0, GPIO_OUTPUT}, ///< B134_332_LED_GREEN
{GPIO_PORTD_BASE, GPIO_PIN_7, GPIO_OUTPUT}, ///< B134_332_PORTD_PIN7
//{GPIO_PORTB_BASE, GPIO_PIN_0, GPIO_OUTPUT}, ///< B134_332_NG1
{GPIO_PORTB_BASE, GPIO_PIN_2, GPIO_OUTPUT}, ///< B134_332_PG1
{GPIO_PORTB_BASE, GPIO_PIN_3, GPIO_OUTPUT}, ///< B134_332_PG2
//{GPIO_PORTB_BASE, GPIO_PIN_4, GPIO_INPUT}, ///< B134_332_DRDY1
{GPIO_PORTC_BASE, GPIO_PIN_5, GPIO_INPUT}, ///< B134_332_DRDY1
{GPIO_PORTC_BASE, GPIO_PIN_7, GPIO_INPUT}, ///< B134_332_DRDY3
//{GPIO_PORTB_BASE, GPIO_PIN_5, GPIO_INPUT}, ///< B134_332_DRDY2
//{GPIO_PORTB_BASE, GPIO_PIN_7, GPIO_INPUT}, ///< B134_332_DRDY3
//{GPIO_PORTB_BASE, GPIO_PIN_6, GPIO_OUTPUT}, ///< B134_332_HEATER
{GPIO_PORTE_BASE, GPIO_PIN_1, GPIO_OUTPUT}, ///< B134_332_PORTE_PIN1
{GPIO_PORTE_BASE, GPIO_PIN_2, GPIO_OUTPUT}, ///< B134_332_PORTE_PIN2
{GPIO_PORTE_BASE, GPIO_PIN_3, GPIO_OUTPUT}, ///< B134_332_PORTE_PIN3
{GPIO_PORTE_BASE, GPIO_PIN_5, GPIO_INPUT}, ///< B134_332_START_BTN
};
/*! Memory for the GPIO module to construct a Hwi */
Hwi_Struct callbackHwi;
/*! GPIO callback structure to set callbacks for GPIO interrupts */
const GPIO_Callbacks B134_332_gpioPortCCallbacks = {
GPIO_PORTC_BASE, INT_GPIOC, &callbackHwi,
{NULL, NULL, NULL, NULL, NULL, gpioADS1255U20Fxn, NULL, gpioADS1255U21Fxn},
};
const GPIO_Config GPIO_config[] = {
{&gpioHWAttrs[0]},
{&gpioHWAttrs[1]},
{&gpioHWAttrs[2]},
{&gpioHWAttrs[3]},
{&gpioHWAttrs[4]},
{&gpioHWAttrs[5]},
{&gpioHWAttrs[6]},
{&gpioHWAttrs[7]},
{&gpioHWAttrs[8]},
{&gpioHWAttrs[9]},
{NULL}
};
/*********************************************************************************************************************//**
* B134_332_initGPIO
*************************************************************************************************************************/
void B134_332_initGPIO(void)
{
/*! Setup the LED GPIO pins used */
GPIOPinTypeGPIOOutput(GPIO_PORTE_BASE, GPIO_PIN_0); /*!< B134_332_LED_RED */
///************************************************************************
/// start it positive voltage 0
/// NG1 PG1 0
/// NG2 PG2 1
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
//GPIOPinTypeGPIOOutput(GPIO_PORTB_BASE,GPIO_PIN_0); //Set CS for Lensdriver ************************remove it
//GPIOPinWrite(GPIO_PORTB_BASE, GPIO_PIN_0, 0); //CSLED down ***************************remove it
GPIOPinTypeGPIOOutput(GPIO_PORTB_BASE,GPIO_PIN_2); ///< Set CS for Lensdriver
GPIOPinWrite(GPIO_PORTB_BASE, GPIO_PIN_2, 0); ///< CSLED down
GPIOPinTypeGPIOOutput(GPIO_PORTB_BASE,GPIO_PIN_3);///< Set CS for Lensdriver
GPIOPinWrite(GPIO_PORTB_BASE, GPIO_PIN_3, GPIO_PIN_3);///< CSLED up
///*************************************************************************
GPIOPinTypeGPIOInput(GPIO_PORTC_BASE,GPIO_PIN_5);///< DRDY1
GPIOPadConfigSet(GPIO_PORTC_BASE, GPIO_PIN_5, GPIO_STRENGTH_4MA, GPIO_PIN_TYPE_STD_WPU);
uint32_t strength;
uint32_t type;
GPIOPadConfigGet(GPIO_PORTC_BASE, GPIO_PIN_5,&strength,&type);
System_printf("strength: %d\n", strength);
System_printf("type: %d\n", type);
System_flush();
//GPIOPinTypeGPIOInput(GPIO_PORTC_BASE,GPIO_PIN_6);///< DRDY2
//GPIOPadConfigSet(GPIO_PORTC_BASE, GPIO_PIN_6, GPIO_STRENGTH_4MA, GPIO_PIN_TYPE_STD_WPU);
GPIOPinTypeGPIOInput(GPIO_PORTC_BASE,GPIO_PIN_7);//DRDY3
GPIOPadConfigSet(GPIO_PORTC_BASE, GPIO_PIN_7, GPIO_STRENGTH_4MA, GPIO_PIN_TYPE_STD_WPU);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD); ///< Enable PORT-D peripheral
/*! Setup the button GPIO pins used for the board */
HWREG(GPIO_PORTD_BASE + GPIO_O_LOCK) = GPIO_LOCK_KEY;
HWREG(GPIO_PORTD_BASE + GPIO_O_CR) |= GPIO_PIN_7;
GPIOPinTypeGPIOOutput(GPIO_PORTD_BASE, GPIO_PIN_7); ///< B134_332_PORTD_PIN7
GPIOPadConfigSet(GPIO_PORTD_BASE, GPIO_PIN_7, GPIO_STRENGTH_4MA, GPIO_PIN_TYPE_STD_WPU);
HWREG(GPIO_PORTD_BASE + GPIO_O_LOCK) = 0;
///*************************************************************************
GPIOPinTypeGPIOOutput(GPIO_PORTE_BASE,GPIO_PIN_1); ///< B134_332_PORTE_PIN1 up
GPIOPinWrite(GPIO_PORTE_BASE, GPIO_PIN_1, 0); ///< B134_332_PORTE_PIN1 down
GPIOPinTypeGPIOOutput(GPIO_PORTE_BASE,GPIO_PIN_2); ///< B134_332_PORTE_PIN2
GPIOPinWrite(GPIO_PORTE_BASE, GPIO_PIN_2, 0); ///< B134_332_PORTE_PIN2 down
GPIOPinTypeGPIOOutput(GPIO_PORTE_BASE,GPIO_PIN_3); ///< B134_332_PORTE_PIN3 up
GPIOPinWrite(GPIO_PORTE_BASE, GPIO_PIN_3, 0); ///< B134_332_PORTE_PIN3 down
///*************************************************************************
GPIOPinTypeGPIOInput(GPIO_PORTE_BASE,GPIO_PIN_5);///< B134_332_START_BTN
GPIOPadConfigSet(GPIO_PORTE_BASE, GPIO_PIN_5, GPIO_STRENGTH_4MA, GPIO_PIN_TYPE_STD_WPU);
/*! Once GPIO_init is called, GPIO_config cannot be changed */
GPIO_init();
GPIO_write(B134_332_LED_GREEN, B134_332_PIN_OFF);
}
/*********************************************************************************************************************//**
* =============================== 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>
/*! I2C objects */
I2CTiva_Object i2cTivaObjects[B134_332_I2CCOUNT];
/*! I2C configuration structure, describing which pins are to be used */
const I2CTiva_HWAttrs i2cTivaHWAttrs[B134_332_I2CCOUNT] = {
{I2C1_BASE, INT_I2C1},
{I2C3_BASE, INT_I2C3},
};
const I2C_Config I2C_config[] = {
{&I2CTiva_fxnTable, &i2cTivaObjects[0], &i2cTivaHWAttrs[0]},
{&I2CTiva_fxnTable, &i2cTivaObjects[1], &i2cTivaHWAttrs[1]},
{NULL, NULL, NULL}
};
/*********************************************************************************************************************//**
* B134_332_initI2C
*************************************************************************************************************************/
void B134_332_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 */
/*! 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>
#include <driverlib/pwm.h>
PWMTiva_Object pwmTivaObjects[B134_332_PWMCOUNT];
/*! PWM configuration structure */
const PWMTiva_HWAttrs pwmTivaHWAttrs[B134_332_PWMCOUNT] = {
{
PWM1_BASE,
PWM_OUT_6,
PWM_GEN_MODE_DOWN | PWM_GEN_MODE_DBG_RUN
},
{
PWM1_BASE,
PWM_OUT_7,
PWM_GEN_MODE_DOWN | PWM_GEN_MODE_DBG_RUN
}
};
const PWM_Config PWM_config[] = {
{&PWMTiva_fxnTable, &pwmTivaObjects[0], &pwmTivaHWAttrs[0]},
{&PWMTiva_fxnTable, &pwmTivaObjects[1], &pwmTivaHWAttrs[1]},
{NULL, NULL, NULL}
};
/*********************************************************************************************************************//**
* B134_332_initPWM
*************************************************************************************************************************/
void B134_332_initPWM(void)
{
/// Configure PWM Clock to match system
SysCtlPWMClockSet(SYSCTL_PWMDIV_1);
///
/// Enable PWM peripherals
///
//SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB); //no heater
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
SysCtlPeripheralEnable(SYSCTL_PERIPH_PWM1); ///< The Tiva Launchpad has two modules (0 and 1). Module 1 covers the LED pins
SysCtlPeripheralEnable(SYSCTL_PERIPH_PWM0); ///< The Tiva Launchpad has two modules (0 and 1). Module 1 covers the LED pins
/// how to set the period. For a 7300 KHz frequency,
/// deprecated(the period = (1/7300) * Clock or Clock / 7300)
/// For 7300Hz (7.3Khz) divide it by 6100
/// For 1100Hz (1.1Khz) divide it by 914
uint32_t ulPeriod = SysCtlClockGet() / 914; ///!< PWM frequency 1.1Khz
uint32_t ulPeriod_ADCClock = 10; ///!< PWM frequency 8MHz
//uint32_t ulPeriod_heat = SysCtlClockGet() / 700; ///!< PWM frequency 100Hz
/*!
* Enable PWM output on GPIO pins. Board_LED1 and Board_LED2 are now
* controlled by PWM peripheral - Do not use GPIO APIs.
*/
///
///Configure PF1,PF2,PF3 Pins as PWM
///
GPIOPadConfigSet(GPIO_PORTC_BASE, GPIO_PIN_4, GPIO_STRENGTH_8MA, GPIO_PIN_TYPE_STD);
GPIOPinConfigure(GPIO_PF1_M1PWM5);//<<CLK_IN (LED1)
GPIOPinConfigure(GPIO_PE4_M1PWM2);//<<GPIO5 (LED2)
GPIOPinConfigure(GPIO_PC4_M0PWM6);//<<ADC_CLK
//GPIOPinConfigure(GPIO_PF2_M1PWM6);
//GPIOPinConfigure(GPIO_PF3_M1PWM7);
//GPIOPinConfigure(GPIO_PB6_M0PWM0); //no heater
//GPIOPinTypePWM(GPIO_PORTB_BASE, GPIO_PIN_6); //no heater
//GPIOPinTypePWM(GPIO_PORTF_BASE, GPIO_PIN_1 | GPIO_PIN_2 |GPIO_PIN_3);
GPIOPinTypePWM(GPIO_PORTF_BASE, GPIO_PIN_1);
GPIOPinTypePWM(GPIO_PORTE_BASE, GPIO_PIN_4);
GPIOPinTypePWM(GPIO_PORTC_BASE,GPIO_PIN_4);
uint32_t strength;
uint32_t type;
GPIOPadConfigGet(GPIO_PORTC_BASE, GPIO_PIN_4,&strength,&type);
System_printf("strength: %d\n", strength);
System_printf("type: %d\n", type);
System_flush();
/**
* Configure PWM Options
* PWM_GEN_1 Covers M1PWM2 and M1PWM3
* PWM_GEN_2 Covers M1PWM4 and M1PWM5
* PWM_GEN_3 Covers M1PWM6 and M1PWM7 See page 419 spmu298a.pdf february 07, 2014
*/
//PWMGenConfigure(PWM0_BASE, PWM_GEN_0, PWM_GEN_MODE_UP_DOWN | PWM_GEN_MODE_DB_SYNC_LOCAL | PWM_GEN_MODE_DBG_RUN); //no heater
PWMGenConfigure(PWM1_BASE, PWM_GEN_1, PWM_GEN_MODE_UP_DOWN | PWM_GEN_MODE_DB_SYNC_LOCAL | PWM_GEN_MODE_DBG_RUN);
PWMGenConfigure(PWM1_BASE, PWM_GEN_2, PWM_GEN_MODE_UP_DOWN | PWM_GEN_MODE_DB_SYNC_LOCAL | PWM_GEN_MODE_DBG_RUN);
PWMGenConfigure(PWM0_BASE, PWM_GEN_3, PWM_GEN_MODE_DOWN | PWM_GEN_MODE_DB_SYNC_LOCAL | PWM_GEN_MODE_DBG_RUN);
//PWMGenConfigure(PWM1_BASE, PWM_GEN_3, PWM_GEN_MODE_UP_DOWN | PWM_GEN_MODE_DB_SYNC_LOCAL | PWM_GEN_MODE_DBG_RUN);
///
/// Set the Period (expressed in clock ticks)
///
//PWMGenPeriodSet(PWM0_BASE, PWM_GEN_0, ulPeriod_heat); //no heater
PWMGenPeriodSet(PWM1_BASE, PWM_GEN_1, ulPeriod);
PWMGenPeriodSet(PWM1_BASE, PWM_GEN_2, ulPeriod);
//PWMGenPeriodSet(PWM1_BASE, PWM_GEN_3, ulPeriod);
PWMGenPeriodSet(PWM0_BASE, PWM_GEN_3, ulPeriod_ADCClock);
///
/// Set PWM duty
///
//PWMPulseWidthSet(PWM0_BASE, PWM_OUT_0, 0); //ulPeriod_heat/2); //no heater
PWMPulseWidthSet(PWM1_BASE, PWM_OUT_2,ulPeriod*0.333f);
PWMPulseWidthSet(PWM1_BASE, PWM_OUT_5,ulPeriod*0.333f); //2
//PWMPulseWidthSet(PWM1_BASE, PWM_OUT_6,ulPeriod/2); //ulPeriod/2-ulPeriod/2*0.1
//PWMPulseWidthSet(PWM1_BASE, PWM_OUT_7,ulPeriod/2-ulPeriod/0.5f); //ulPeriod/2+ulPeriod/2*0.1
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_6, ulPeriod_ADCClock/2); //50%Clock Duty Cycle
uint32_t ui32Gen = PWM_GEN_BADDR(PWM1_BASE, PWM_GEN_1);
HWREG(ui32Gen + PWM_O_X_GENA) = (PWM_X_GENA_ACTLOAD_NONE |
PWM_X_GENA_ACTCMPAU_ONE |
PWM_X_GENA_ACTZERO_NONE |
PWM_X_GENA_ACTCMPAD_ZERO);
HWREG(ui32Gen + PWM_O_X_GENB) = (PWM_X_GENB_ACTLOAD_NONE |
PWM_X_GENB_ACTCMPAU_ONE |
PWM_X_GENB_ACTZERO_NONE |
PWM_X_GENB_ACTCMPAD_ZERO);
ui32Gen = PWM_GEN_BADDR(PWM1_BASE, PWM_GEN_2);
HWREG(ui32Gen + PWM_O_X_GENA) = (PWM_X_GENA_ACTLOAD_NONE |
PWM_X_GENA_ACTCMPBU_ZERO |
PWM_X_GENA_ACTZERO_ONE |
PWM_X_GENA_ACTCMPBD_NONE);
HWREG(ui32Gen + PWM_O_X_GENB) = (PWM_X_GENB_ACTLOAD_NONE |
PWM_X_GENB_ACTCMPBU_ZERO |
PWM_X_GENB_ACTZERO_ONE |
PWM_X_GENB_ACTCMPBD_NONE);
// ui32Gen = PWM_GEN_BADDR(PWM1_BASE, PWM_GEN_3);
// HWREG(ui32Gen + PWM_O_X_GENA) = (PWM_X_GENA_ACTLOAD_NONE |
// PWM_X_GENA_ACTCMPAU_NONE |
// PWM_X_GENA_ACTZERO_ONE |
// PWM_X_GENA_ACTCMPAD_ZERO);
//
// HWREG(ui32Gen + PWM_O_X_GENB) = (PWM_X_GENB_ACTLOAD_ONE |
// PWM_X_GENB_ACTCMPAU_ZERO |
// PWM_X_GENB_ACTZERO_NONE |
// PWM_X_GENB_ACTCMPAD_NONE);
//PWMOutputInvert(PWM1_BASE, PWM_OUT_7_BIT, true);
/// we first set the PWM width for all channels to be sync'ed
/// Enable the PWM generator
//PWMGenEnable(PWM0_BASE, PWM_GEN_0);
PWMGenEnable(PWM1_BASE, PWM_GEN_1);
PWMGenEnable(PWM1_BASE, PWM_GEN_2);
PWMGenEnable(PWM0_BASE, PWM_GEN_3);
//PWMGenEnable(PWM1_BASE, PWM_GEN_3);
/**
* Reset PWM generator blocks and sync
* need to call these functions after each pulse width change
*/
PWMSyncTimeBase(PWM1_BASE,PWM_GEN_1_BIT| PWM_GEN_2_BIT);///< First timebase update
PWMSyncUpdate(PWM1_BASE, PWM_GEN_1_BIT | PWM_GEN_2_BIT);///< then sync update
/// Turn on the Output pins
//PWMOutputState(PWM0_BASE, PWM_OUT_0_BIT, true);
//PWMOutputState(PWM1_BASE, PWM_OUT_5_BIT |PWM_OUT_6_BIT|PWM_OUT_7_BIT, true);
PWMOutputState(PWM1_BASE, PWM_OUT_2_BIT |PWM_OUT_5_BIT, true);
PWMOutputState(PWM0_BASE, PWM_OUT_6_BIT, true);
PWM_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>
/*! SPI objects */
SPITivaDMA_Object spiTivaDMAObjects[B134_332_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[B134_332_SPICOUNT];
/** SPI configuration structure, describing which pins are to be used */
const SPITivaDMA_HWAttrs spiTivaDMAHWAttrs[B134_332_SPICOUNT] = {
{
SSI0_BASE,
INT_SSI0,
&spiTivaDMAscratchBuf[0],
0,
UDMA_CHANNEL_SSI0RX,
UDMA_CHANNEL_SSI0TX,
uDMAChannelAssign,
UDMA_CH10_SSI0RX,
UDMA_CH11_SSI0TX
},
{
SSI1_BASE,
INT_SSI1,
&spiTivaDMAscratchBuf[1],
1,
UDMA_CHANNEL_SSI1RX,
UDMA_CHANNEL_SSI1TX,
uDMAChannelAssign,
UDMA_CH24_SSI1RX,
UDMA_CH25_SSI1TX
},
{
SSI2_BASE,
INT_SSI2,
&spiTivaDMAscratchBuf[2],
2,
UDMA_SEC_CHANNEL_UART2RX_12,
UDMA_SEC_CHANNEL_UART2TX_13,
uDMAChannelAssign,
UDMA_CH12_SSI2RX,
UDMA_CH13_SSI2TX
}
};
const SPI_Config SPI_config[] = {
{&SPITivaDMA_fxnTable, &spiTivaDMAObjects[0], &spiTivaDMAHWAttrs[0]},
{&SPITivaDMA_fxnTable, &spiTivaDMAObjects[1], &spiTivaDMAHWAttrs[1]},
{&SPITivaDMA_fxnTable, &spiTivaDMAObjects[2], &spiTivaDMAHWAttrs[2]},
//{NULL, NULL, NULL},
//{NULL, NULL, NULL},
{NULL, NULL, NULL},
};
/*********************************************************************************************************************//**
* B134_332_initSPI
*************************************************************************************************************************/
void B134_332_initSPI()
{
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
/* SPI0 */
SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI0);
/* Need to unlock PF0 */
GPIOPinConfigure(GPIO_PA2_SSI0CLK);
//GPIOPinConfigure(GPIO_PA3_SSI0FSS); //Set CS for Current driver
GPIOPinConfigure(GPIO_PA4_SSI0RX);
GPIOPinConfigure(GPIO_PA5_SSI0TX);
GPIOPinTypeGPIOOutput(GPIO_PORTA_BASE,GPIO_PIN_3);//Set CS for Lensdriver
GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_3, GPIO_PIN_3);//pin up
GPIOPinTypeGPIOOutput(GPIO_PORTA_BASE,GPIO_PIN_6); //Set CS for LED
GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_6, GPIO_PIN_6); //pin up
//GPIOPinTypeGPIOOutput(GPIO_PORTA_BASE, GPIO_PIN_1); //set CS for ADS1146
//GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_1, GPIO_PIN_1); //pin up
//GPIOPinTypeGPIOOutput(GPIO_PORTA_BASE, GPIO_PIN_0); //set CS for ADS1255 U20
//GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_0, GPIO_PIN_0); //pin up
//GPIOPinTypeGPIOOutput(GPIO_PORTA_BASE, GPIO_PIN_7); //set CS for ADS1255 U21
//GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_7, GPIO_PIN_7); //pin up
GPIOPinTypeSSI(GPIO_PORTA_BASE, GPIO_PIN_2 | GPIO_PIN_4 | GPIO_PIN_5); // Do not include CS pin 3 (FSS)
SSIConfigSetExpClk(SSI0_BASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_1, SSI_MODE_MASTER, 2000000, 8);//SSI_FRF_TI SSI_FRF_MOTO_MODE_3
SSIEnable(SSI0_BASE);
/* SPI2 */
SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI2);
SysCtlPeripheralSleepEnable(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_6 | GPIO_PIN_7); //GPIO_PIN_5 |
SSIConfigSetExpClk(SSI2_BASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_1, SSI_MODE_MASTER, 2000000, 8);//SSI_FRF_TI SSI_FRF_MOTO_MODE_3
SSIEnable(SSI2_BASE);
uint_fast16_t ui16Idx;
//
// Fill the TX and RX buffer with a simple data pattern.
//
for(ui16Idx = 0; ui16Idx < SSI_BUFFER_SIZE; ui16Idx++)
{
g_ui8TxBufA[ui16Idx] = 0;
g_ui8RxBufA[ui16Idx] = 0;
g_ui8TxBufB[ui16Idx] = 0;
g_ui8RxBufB[ui16Idx] = 0;
}
//-----------------------------------------DMA STUFF START------------------------------------------------------------------------------
// disable all interrupt
SSIIntDisable(SSI2_BASE,SSI_TXEOT | //transmit fifo is empty
SSI_DMATX | //DMA Transmit complete
SSI_DMARX | //DMA Receive complete
SSI_TXFF | //TX FIFO half full or less
SSI_RXFF | //RX FIFO half full or more
SSI_RXTO | //rx timeout
SSI_RXOR); //rx error
// ---SSI1 RX---
uDMAChannelAssign(UDMA_CH12_SSI2RX);
uDMAChannelSelectSecondary(UDMA_DEF_RESERVED_SEC_UART2RX);
uDMAChannelDisable(UDMA_SEC_CHANNEL_UART2RX_12);
//
// Put the attributes in a known state for the uDMA SSI0RX channel. These
// should already be disabled by default.
//
uDMAChannelAttributeDisable(UDMA_SEC_CHANNEL_UART2RX_12,
UDMA_ATTR_USEBURST | UDMA_ATTR_ALTSELECT |
(UDMA_ATTR_HIGH_PRIORITY |
UDMA_ATTR_REQMASK));
// Configure the control parameters for the primary control structure for
// the SSIORX channel.
uDMAChannelControlSet(UDMA_SEC_CHANNEL_UART2RX_12 | UDMA_PRI_SELECT,
UDMA_SIZE_8 | UDMA_SRC_INC_NONE | UDMA_DST_INC_8 |
UDMA_ARB_1);
// ---SS1 TX---
uDMAChannelAssign(UDMA_CH13_SSI2TX);
//uDMAChannelSelectSecondary(UDMA_DEF_RESERVED_SEC_UART2TX);
uDMAChannelDisable(UDMA_SEC_CHANNEL_UART2TX_13);
// Put the attributes in a known state for the uDMA SSI0TX channel. These
// should already be disabled by default.
uDMAChannelAttributeDisable(UDMA_SEC_CHANNEL_UART2TX_13,
UDMA_ATTR_ALTSELECT |
UDMA_ATTR_HIGH_PRIORITY |
UDMA_ATTR_REQMASK);
// Configure the control parameters for the SSI0 TX.
uDMAChannelControlSet(UDMA_SEC_CHANNEL_UART2TX_13 | UDMA_PRI_SELECT, UDMA_SIZE_8 | UDMA_SRC_INC_8 | UDMA_DST_INC_NONE | UDMA_ARB_1);
//-----------------------------------------DMA STUFF END---------------------------------------------------------------------------------
/* SPI1 */
SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI1);
SysCtlPeripheralSleepEnable(SYSCTL_PERIPH_SSI1);
GPIOPinConfigure(GPIO_PF2_SSI1CLK);
//GPIOPinConfigure(GPIO_PF3_SSI1FSS);
GPIOPinConfigure(GPIO_PD2_SSI1RX);
GPIOPinConfigure(GPIO_PD3_SSI1TX);
GPIOPinTypeSSI(GPIO_PORTF_BASE, GPIO_PIN_2); //GPIO_PIN_3
GPIOPinTypeSSI(GPIO_PORTD_BASE, GPIO_PIN_2 | GPIO_PIN_3);
SSIConfigSetExpClk(SSI1_BASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_1, SSI_MODE_MASTER, 2000000, 8);//SSI_FRF_TI SSI_FRF_MOTO_MODE_3
SSIEnable(SSI1_BASE);
//-----------------------------------------DMA STUFF START------------------------------------------------------------------------------
// disable all interrupt
SSIIntDisable(SSI1_BASE,SSI_TXEOT | //transmit fifo is empty
SSI_DMATX | //DMA Transmit complete
SSI_DMARX | //DMA Receive complete
SSI_TXFF | //TX FIFO half full or less
SSI_RXFF | //RX FIFO half full or more
SSI_RXTO | //rx timeout
SSI_RXOR); //rx error
// ---SSI1 RX---
uDMAChannelAssign(UDMA_CH24_SSI1RX);
uDMAChannelDisable(UDMA_CHANNEL_SSI1RX);
//
// Put the attributes in a known state for the uDMA SSI0RX channel. These
// should already be disabled by default.
//
uDMAChannelAttributeDisable(UDMA_CHANNEL_SSI1RX,
UDMA_ATTR_USEBURST | UDMA_ATTR_ALTSELECT |
(UDMA_ATTR_HIGH_PRIORITY |
UDMA_ATTR_REQMASK));
// Configure the control parameters for the primary control structure for
// the SSIORX channel.
uDMAChannelControlSet(UDMA_CHANNEL_SSI1RX | UDMA_PRI_SELECT,
UDMA_SIZE_8 | UDMA_SRC_INC_NONE | UDMA_DST_INC_8 |
UDMA_ARB_1);
// ---SS1 TX---
uDMAChannelAssign(UDMA_CH25_SSI1TX);
uDMAChannelDisable(UDMA_CHANNEL_SSI1TX);
// Put the attributes in a known state for the uDMA SSI0TX channel. These
// should already be disabled by default.
uDMAChannelAttributeDisable(UDMA_CHANNEL_SSI1TX,
UDMA_ATTR_ALTSELECT |
UDMA_ATTR_HIGH_PRIORITY |
UDMA_ATTR_REQMASK);
// Configure the control parameters for the SSI0 TX.
uDMAChannelControlSet(UDMA_CHANNEL_SSI1TX | UDMA_PRI_SELECT, UDMA_SIZE_8 | UDMA_SRC_INC_8 | UDMA_DST_INC_NONE | UDMA_ARB_1);
//-----------------------------------------DMA STUFF END---------------------------------------------------------------------------------
SPI_init();
}
/*********************************************************************************************************************//**
* Dani function
* @param current
*************************************************************************************************************************/
void B134_332_spiSendDALED(uint16_t current){
current=current<<2;
uint8_t currentLow=current&0x00FF;
uint8_t currentHigh=current>>8;
SSIDisable(SSI0_BASE);
SSIConfigSetExpClk(SSI0_BASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 1000000, 8);//SSI_FRF_TI SSI_FRF_MOTO_MODE_3
SSIEnable(SSI0_BASE);
int i;
for(i=0; i<500;i++); ///< wait
//GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_6, GPIO_PIN_6);//CSLED up
GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_6, 0);//CSLED down
for(i=0; i<50;i++); ///< wait
SSIDataPut(SSI0_BASE, currentHigh);
while(SSIBusy(SSI0_BASE))
{
}
SSIDataPut(SSI0_BASE, currentLow);
while(SSIBusy(SSI0_BASE))
{
}
for(i=0; i<50;i++); ///< wait
GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_6, GPIO_PIN_6);//CSLED up
}
/*********************************************************************************************************************//**
* =============================== USB ===============================
*************************************************************************************************************************/
/*********************************************************************************************************************//**
* This function just turns on the USB
*************************************************************************************************************************/
void B134_332_initUSB(B134_332_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 == B134_332_USBHOST) {
System_abort("USB host not supported\n");
}
}
#endif ///< #ifdef B134_332
