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/*
* I2C.c
*
* Created on: Jun 6, 2018
* Author: avi
*/
#include <stdint.h>
#include <stdbool.h>
#include "include.h"
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "inc/tm4c1294ncpdt.h"
#include "driverlib/gpio.h"
#include "driverlib/pin_map.h"
#include "driverlib/rom.h"
#include "driverlib/rom_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/i2c.h"
#include "I2C.h"
#include "inc/hw_i2c.h"
//#include "i2c_fifo.h"
#define I2C_DELAY 3000
uint8_t Main_Mux_Flag = UNKNOWN;
//uint32_t I2C_BUSY_DELAY = 100;
uint32_t I2C_2_3_BUSY_DELAY = 3000; //I2C2_BASE, I2C3_BASE (3000 only for first communication changed to 100 in main)
uint32_t I2C_4_BUSY_DELAY = 3000; //I2C4_BASE (RFID + Dispensers) (RFUD working only with 3000)
void InitI2C2()
{
//
//Enable GPIO for Configuring the I2C Interface Pins
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOG);
//
// Wait for the Peripheral to be ready for programming
//
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_GPIOG));
//
// Configure Pins for I2C2 Master Interface
//
GPIOPinConfigure(GPIO_PG2_I2C2SCL);
GPIOPinConfigure(GPIO_PG3_I2C2SDA);
GPIOPinTypeI2C(GPIO_PORTG_BASE, GPIO_PIN_3);
GPIOPinTypeI2CSCL(GPIO_PORTG_BASE, GPIO_PIN_2);
// GPIOPadConfigSet(GPIO_PORTG_BASE,GPIO_PIN_2,GPIO_STRENGTH_2MA,GPIO_PIN_TYPE_STD_WPU); // needed if using the EVB
// GPIOPadConfigSet(GPIO_PORTG_BASE,GPIO_PIN_3,GPIO_STRENGTH_2MA,GPIO_PIN_TYPE_STD_WPU);
}
void Configuring_Master_I2C2(/*uint32_t ui32SysClock*/)
{
uint32_t ui32SysClock;
ui32SysClock = SysCtlClockFreqSet((SYSCTL_OSC_MAIN | SYSCTL_USE_PLL | SYSCTL_XTAL_25MHZ |
SYSCTL_CFG_VCO_480), 120000000);
//
// Stop the Clock, Reset and Enable I2C Module
// in Master Function
//
SysCtlPeripheralDisable(SYSCTL_PERIPH_I2C2);
SysCtlPeripheralReset(SYSCTL_PERIPH_I2C2);
SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C2);
//
// Wait for the Peripheral to be ready for programming
//
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_I2C2));
//
// Initialize and Configure the Master Module
//
#ifdef I2C_2_Data_Transfer_Rate_400kbps
I2CMasterInitExpClk(I2C2_BASE, ui32SysClock, true);//The last parameter sets the I2C data transfer rate: false for 100kbps and true for 400kbps
#else
I2CMasterInitExpClk(I2C2_BASE, ui32SysClock, false);//The last parameter sets the I2C data transfer rate: false for 100kbps and true for 400kbps
#endif
//i2c_fifo_setup(I2C2_BASE);
}
//--------------------------------------------------------------
void InitI2C3()
{
//
//Enable GPIO for Configuring the I2C Interface Pins
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOR);
//
// Wait for the Peripheral to be ready for programming
//
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_GPIOR));
//
// Configure Pins for I2C2 Master Interface
//
GPIOPinConfigure(GPIO_PR4_I2C3SCL);
GPIOPinConfigure(GPIO_PR5_I2C3SDA);
GPIOPinTypeI2C(GPIO_PORTR_BASE, GPIO_PIN_5);
GPIOPinTypeI2CSCL(GPIO_PORTR_BASE, GPIO_PIN_4);
// GPIOPadConfigSet(GPIO_PORTR_BASE,GPIO_PIN_4,GPIO_STRENGTH_2MA,GPIO_PIN_TYPE_STD_WPU); // needed if using the EVB
// GPIOPadConfigSet(GPIO_PORTR_BASE,GPIO_PIN_5,GPIO_STRENGTH_2MA,GPIO_PIN_TYPE_STD_WPU);
}
void Configuring_Master_I2C3(/*uint32_t ui32SysClock*/)
{
uint32_t ui32SysClock;
ui32SysClock = SysCtlClockFreqSet((SYSCTL_OSC_MAIN | SYSCTL_USE_PLL | SYSCTL_XTAL_25MHZ |
SYSCTL_CFG_VCO_480), 120000000);
//
// Stop the Clock, Reset and Enable I2C Module
// in Master Function
//
SysCtlPeripheralDisable(SYSCTL_PERIPH_I2C3);
SysCtlPeripheralReset(SYSCTL_PERIPH_I2C3);
SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C3);
//
// Wait for the Peripheral to be ready for programming
//
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_I2C3));
//
// Initialize and Configure the Master Module
//
#ifdef I2C_3_Data_Transfer_Rate_400kbps
I2CMasterInitExpClk(I2C3_BASE, ui32SysClock, true);//The last parameter sets the I2C data transfer rate: false for 100kbps and true for 400kbps
#else
I2CMasterInitExpClk(I2C3_BASE, ui32SysClock, false);//The last parameter sets the I2C data transfer rate: false for 100kbps and true for 400kbps
#endif
//i2c_fifo_setup(I2C3_BASE);
}
void InitI2C4()
{
//
//Enable GPIO for Configuring the I2C Interface Pins
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOR);
//
// Wait for the Peripheral to be ready for programming
//
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_GPIOR));
//
// Configure Pins for I2C2 Master Interface
//
GPIOPinConfigure(GPIO_PR6_I2C4SCL);
GPIOPinConfigure(GPIO_PR7_I2C4SDA);
GPIOPinTypeI2C(GPIO_PORTR_BASE, GPIO_PIN_7);
GPIOPinTypeI2CSCL(GPIO_PORTR_BASE, GPIO_PIN_6);
// GPIOPadConfigSet(GPIO_PORTR_BASE,GPIO_PIN_6,GPIO_STRENGTH_2MA,GPIO_PIN_TYPE_STD_WPU); // needed if using the EVB
// GPIOPadConfigSet(GPIO_PORTR_BASE,GPIO_PIN_6,GPIO_STRENGTH_2MA,GPIO_PIN_TYPE_STD_WPU);
}
void Configuring_Master_I2C4(/*uint32_t ui32SysClock*/)
{
uint32_t ui32SysClock;
ui32SysClock = SysCtlClockFreqSet((SYSCTL_OSC_MAIN | SYSCTL_USE_PLL | SYSCTL_XTAL_25MHZ |
SYSCTL_CFG_VCO_480), 120000000);
//
// Stop the Clock, Reset and Enable I2C Module
// in Master Function
//
SysCtlPeripheralDisable(SYSCTL_PERIPH_I2C4);
SysCtlPeripheralReset(SYSCTL_PERIPH_I2C4);
SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C4);
//
// Wait for the Peripheral to be ready for programming
//
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_I2C4));
//
// Initialize and Configure the Master Module
//
#ifdef I2C_4_Data_Transfer_Rate_400kbps
I2CMasterInitExpClk(I2C4_BASE, ui32SysClock, true);//The last parameter sets the I2C data transfer rate: false for 100kbps and true for 400kbps
#else
I2CMasterInitExpClk(I2C4_BASE, ui32SysClock, false);//The last parameter sets the I2C data transfer rate: false for 100kbps and true for 400kbps
#endif
//i2c_fifo_setup(I2C4_BASE);
}
void Init_All_I2C()
{
//I2C switches address: 0xE0, 0xE4, 0xE3
InitI2C4();
Configuring_Master_I2C4();
//I2C switches address: 0xE0, 0xE4, 0xE3 + I2C-ADC address: 0x40, 0x44, 0x46
InitI2C3();
Configuring_Master_I2C3();
//I2C-DAC address: 0x98 + I2C EEPROM address: 0xA0
InitI2C2();
Configuring_Master_I2C2();
}
void Write_I2C(uint32_t I2C_BASE,uint32_t Slave_Add, uint8_t Byte2Write)
{
//#define SLAVE_ADDRESS_EXT (0xE0>>1)
//Slave_Add = Slave_Add
#define NUM_OF_I2CBYTES 1
uint8_t g_ui8MasterBytes = 1 ;
uint8_t g_ui8MasterTxData = Byte2Write; //TODO
uint8_t g_ui8MasterBytesLength = 1;
// *****************************************************************************
//
// Define for I2C Module
//
// *****************************************************************************
// Send the Slave Address with RnW as Transmit
// and First Data Byte. Based on Number of bytes the
// command would be either START or FINISH
//
I2CMasterSlaveAddrSet(I2C_BASE, Slave_Add, false);
//TODO Add here 'for' to send more than 1 byte
I2CMasterDataPut(I2C_BASE, g_ui8MasterTxData);
if(g_ui8MasterBytes == g_ui8MasterBytesLength)
{
I2CMasterControl(I2C_BASE, I2C_MASTER_CMD_SINGLE_SEND);
}
else
{
I2CMasterControl(I2C_BASE, I2C_MASTER_CMD_BURST_SEND_START);
}
SysCtlDelay(I2C_DELAY);//15000
}
uint8_t Read_I2C(uint32_t I2C_BASE,uint32_t Slave_Add)
{
// Start Read from configured slave
I2CMasterSlaveAddrSet(I2C_BASE, Slave_Add, true);
I2CMasterControl(I2C_BASE, I2C_MASTER_CMD_BURST_RECEIVE_START);
SysCtlDelay(I2C_DELAY);//15000
uint8_t get = I2CMasterDataGet(I2C_BASE);
I2CMasterControl(I2C_BASE, I2C_MASTER_CMD_BURST_RECEIVE_FINISH);
SysCtlDelay(I2C_DELAY);//15000
//uint8_t get1 = I2CMasterDataGet(I2C4_BASE);
return get;
}
uint8_t Write_Single_I2C(uint32_t I2C_BASE,uint32_t Slave_Add, uint8_t Byte2Write)
{
#define NUM_OF_I2CBYTES 1
//uint8_t g_ui8MasterBytes = 1 ;
uint8_t g_ui8MasterTxData = Byte2Write; //TODO
//uint8_t g_ui8MasterBytesLength = 1;
// *****************************************************************************
//
// Define for I2C Module
//
// *****************************************************************************
// Send the Slave Address with RnW as Transmit
// and First Data Byte. Based on Number of bytes the
// command would be either START or FINISH
//
I2CMasterSlaveAddrSet(I2C_BASE, Slave_Add, false);
I2CMasterDataPut(I2C_BASE, g_ui8MasterTxData);
I2CMasterControl(I2C_BASE, I2C_MASTER_CMD_SINGLE_SEND);
SysCtlDelay(I2C_DELAY);//15000
return OK;
}
uint8_t Read_Single_I2C(uint32_t I2C_BASE,uint32_t Slave_Add)
{
// Start Read from configured slave
I2CMasterSlaveAddrSet(I2C_BASE, Slave_Add, true);
I2CMasterControl(I2C_BASE, I2C_MASTER_CMD_SINGLE_RECEIVE);
SysCtlDelay(I2C_DELAY);//15000
uint8_t get = I2CMasterDataGet(I2C_BASE);
return get;
}
uint32_t I2C_control(uint32_t I2C_ID, uint32_t Slave_Add, bool RW,uint32_t Byte2Write )
{
uint32_t I2C_BASE;
if (I2C_ID == 4)
I2C_BASE = I2C4_BASE;
else
if (I2C_ID == 3)
I2C_BASE = I2C3_BASE;
else
if (I2C_ID == 2)
I2C_BASE = I2C2_BASE;
else
return ERROR;
/* if ( (Slave_Add != 0xE0) && (Slave_Add != 0xE4) && (Slave_Add != 0xE3) &
(Slave_Add != 0x40) && (Slave_Add != 0x44) && (Slave_Add != 0x46) &
(Slave_Add != 0x98) && (Slave_Add != 0xA0) )
return ERROR;*/
Slave_Add = Slave_Add>>1;
Byte2Write = Byte2Write & 0xFF;
if(RW == 0 )
{
Write_I2C(I2C_BASE, Slave_Add,Byte2Write);
return 0;
}
else
{
//uint8_t value = Read_I2C(I2C_BASE, Slave_Add);
uint8_t value = Read_Single_I2C(I2C_BASE, Slave_Add);
return value;
}
}
//--------------------------------------------------------------------------------------
#define I2C_ID_MUX_TCA9548A_0xE4 0x03
#define I2C3_MAIN_MUX_TCA9548A_0xE4 0xE4//Slave_Add
uint32_t Block_Main_MUX_TCA9548A_0xE4() ////unused I2C MUX
{
uint32_t status= OK;
uint8_t Write_Buf[1];
Write_Buf[0] = 0x00;//Block all
status = I2C_Write(I2C_ID_MUX_TCA9548A_0xE4, I2C3_MAIN_MUX_TCA9548A_0xE4, Write_Buf, 1);
return status;
}
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