void *GPSLoop(void *some_void_ptr)
{
unsigned char Line[100];
int id, Length;
struct i2c_info bb;
struct TGPS *GPS;
GPS = (struct TGPS *)some_void_ptr;
Length = 0;
while (1)
{
int i;
unsigned char Character;
printf ("SDA/SCL = %d/%d\n", Config.SDA, Config.SCL);
if (OpenI2C(&bb, 0x42, Config.SDA, Config.SCL, 10, 100)) // struct, i2c address, SDA, SCL, us clock delay, timeout ms
{
printf("Failed to open I2C\n");
exit(1);
}
SetFlightMode(&bb);
while (!bb.Failed)
{
Character = I2CGetc(&bb);
if (Character == 0xFF)
{
delayMilliseconds (100);
}
else if (Character == '$')
{
Line[0] = Character;
Length = 1;
}
else if (Length > 90)
{
Length = 0;
}
else if ((Length > 0) && (Character != '\r'))
{
Line[Length++] = Character;
if (Character == '\n')
{
Line[Length] = '\0';
// puts(Line);
ProcessLine(&bb, GPS, Line, Length);
delayMilliseconds (100);
Length = 0;
}
}
}
ResetI2C(&bb);
}
}
void Read_MPU6050(unsigned char value[]){
char writeaddress = (0x68 << 1)|I2C_WRITE;
char readaddress = writeaddress + 0x01;
int i=0;
I2C1CONbits.ACKDT = 0; //set ACK
while(I2Cstartevent()==0){
sprintf(NU32_RS232OutBuffer,"Trying to stop bus...\r\n");
WriteString(UART2,NU32_RS232OutBuffer);
ResetI2C();
}
I2Csendonebyte(writeaddress);
I2Csendonebyte(0x3B);
I2Crepeatstartevent();
I2Csendonebyte(readaddress);
for(i=0; i<13; i++)
{
I2Creadonebyte(&value[i]);
I2C1CONbits.ACKEN=1;
while(I2C1CONbits.ACKEN);
}
I2Creadonebyte(&value[13]);
I2C1CONbits.ACKDT = 1;
I2C1CONbits.ACKEN=1; //Set NACK
while(I2C1CONbits.ACKEN);
I2Cstopevent();
}
/**
* All modules MUST provide a FULL cleanup function. This must cleanup all allocations etc
* e.g. we will have to populate this when we add circular buffers!
*
**/
static BT_ERROR i2cCleanup(BT_HANDLE hI2C) {
ResetI2C(hI2C);
// Disable peripheral clock.
disablei2cPeripheralClock(hI2C);
const BT_RESOURCE *pResource = BT_GetIntegratedResource(hI2C->i2c_master.pDevice, BT_RESOURCE_IRQ, 0);
BT_DisableInterrupt(pResource->ulStart);
return BT_ERR_NONE;
}
//This function initiates a full transmission to write a single byte to
//a register of a slave device via I2C. The device address is the 7 bit
//address of the slave device with a 0 as the least significant bit.
void I2Cwrite(char deviceaddress, char registeraddress, char value){
while(I2Cstartevent()==0){
sprintf(NU32_RS232OutBuffer,"Trying to stop bus...\r\n");
WriteString(UART2,NU32_RS232OutBuffer);
ResetI2C();
}
I2Csendonebyte(deviceaddress);
I2Csendonebyte(registeraddress);
I2Csendonebyte(value);
I2Cstopevent();
}
//This function initiates a full transmission to read a single byte from
//a register of a slave device via I2C.The device address is the 7 bit
//address of the slave device with a 0 as the least significant bit.
void I2Cread(char writeaddress, char registeraddress, char * value){
char readaddress = writeaddress + 0x01;
while(I2Cstartevent()==0){
sprintf(NU32_RS232OutBuffer,"Trying to stop bus...\r\n");
WriteString(UART2,NU32_RS232OutBuffer);
ResetI2C();
}
I2Csendonebyte(writeaddress);
I2Csendonebyte(registeraddress);
I2Crepeatstartevent();
I2Csendonebyte(readaddress);
I2Creadonebyte(value);
I2Cstopevent();
}
void Read_HMC5883L(unsigned char value[]){
char writeaddress = (0x1E << 1)|I2C_WRITE;
char readaddress = writeaddress + 0x01;
I2C1CONbits.ACKDT = 0; //set ACK
while(I2Cstartevent()==0){
sprintf(NU32_RS232OutBuffer,"Trying to stop bus...\r\n");
WriteString(UART2,NU32_RS232OutBuffer);
ResetI2C();
}
I2Csendonebyte(writeaddress);
I2Csendonebyte(0x03);
I2Crepeatstartevent();
I2Csendonebyte(readaddress);
I2Creadonebyte(&value[0]);
I2C1CONbits.ACKEN=1;
while(I2C1CONbits.ACKEN);
I2Creadonebyte(&value[1]);
I2C1CONbits.ACKEN=1;
while(I2C1CONbits.ACKEN);
I2Creadonebyte(&value[2]);
I2C1CONbits.ACKEN=1;
while(I2C1CONbits.ACKEN);
I2Creadonebyte(&value[3]);
I2C1CONbits.ACKEN=1;
while(I2C1CONbits.ACKEN);
I2Creadonebyte(&value[4]);
I2C1CONbits.ACKEN=1;
while(I2C1CONbits.ACKEN);
I2Creadonebyte(&value[5]);
I2C1CONbits.ACKDT = 1; //set NACK
I2C1CONbits.ACKEN=1;
while(I2C1CONbits.ACKEN);
I2Cstopevent();
}
static BT_HANDLE i2c_probe(const BT_INTEGRATED_DEVICE *pDevice, BT_ERROR *pError) {
BT_ERROR Error = BT_ERR_NONE;
BT_HANDLE hI2C = NULL;
const BT_RESOURCE *pResource = BT_GetIntegratedResource(pDevice, BT_RESOURCE_MEM, 0);
if(!pResource) {
Error = BT_ERR_NO_MEMORY;
goto err_free_out;
}
hI2C = BT_CreateHandle(&oHandleInterface, sizeof(struct _BT_OPAQUE_HANDLE), pError);
if(!hI2C) {
goto err_out;
}
hI2C->pRegs = (LPC11xx_I2C_REGS *) pResource->ulStart;
pResource = BT_GetIntegratedResource(pDevice, BT_RESOURCE_ENUM, 0);
if(!pResource) {
Error = BT_ERR_NO_MEMORY;
goto err_free_out;
}
hI2C->i2c_master.pDevice = pDevice;
pResource = BT_GetIntegratedResource(pDevice, BT_RESOURCE_INTEGER, 0);
if(!pResource) {
Error = BT_ERR_GENERIC;
goto err_free_out;
}
i2cSetPowerState(hI2C, BT_POWER_STATE_AWAKE);
// Reset all registers to their defaults!
ResetI2C(hI2C);
i2cEnable(hI2C);
i2c_set_clock_rate(hI2C, pResource->ulStart);
pResource = BT_GetIntegratedResource(pDevice, BT_RESOURCE_IRQ, 0);
if(!pResource) {
Error = BT_ERR_GENERIC;
goto err_free_out;
}
/* On NVIC we don't need to register interrupts, LINKER has patched vector for us
* Error = BT_RegisterInterrupt(pResource->ulStart, I2C_irq_handler, hI2C);
if(Error) {
goto err_free_out;
}*/
//@@Error = BT_EnableInterrupt(pResource->ulStart);
pResource = BT_GetIntegratedResource(pDevice, BT_RESOURCE_BUSID, 0);
if(!pResource) {
goto err_free_out;
}
BT_u32 ulBusID = pResource->ulStart;
hI2C->i2c_master.ulBusID = ulBusID;
hI2C->i2c_master.hBus = hI2C; // Save pointer to bus's private data.
hI2C->i2c_master.pDevice = pDevice;
BT_I2C_RegisterBus(&hI2C->i2c_master);
if(pError) {
*pError = Error;
}
return hI2C;
err_free_out:
BT_DestroyHandle(hI2C);
err_out:
if(pError) {
*pError = Error;
}
return NULL;
}
@interrupt void I2C_INT(void)
{
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
unsigned char SMBS_SR1 = I2CSR1;
unsigned char SMBS_SR2 = I2CSR2;
// stat[statnum][0] = SMBS_SR1;
// stat[statnum++][1] = SMBS_SR2;
if (SMBS_SR2 & BERR) //Check if Bus Error
{
ResetI2C();
return;
}
if (SMBS_SR2 & AF)
{
//EV3-1
STATE = EVT3_1;
I2CDR = 0xFF;
return;
}
//EV1: EVF=1, ADSL=1, cleared by reading SR1 register.
//EV2: EVF=1, BTF=1, cleared by reading SR1 register followed by reading DR register.
//EV3: EVF=1, BTF=1, cleared by reading SR1 register followed by writing DR register.
//EV3-1: EVF=1, AF=1, BTF=1; AF is cleared by reading SR1 register. BTF is cleared by releasing the lines
//(STOP=1, STOP=0) or by writing DR register (DR=FFh). If lines are released by STOP=1, STOP=0, the On-chip peripherals subsequent EV4 is not seen.
//EV4: EVF=1, STOPF=1, cleared by reading SR2 register.
if (SMBS_SR1 & EVF == 0)
return;
if (SMBS_SR1 & ADSL)
{
I2CAddress = I2CDR;
STATE = EVT1;
return;
}
if (SMBS_SR1 & BTF)
{
//Next, in 7-bit mode read the DR register to determine from the least significant bit (Data
//Direction Bit) if the slave must enter Receiver or Transmitter mode.
if (I2CAddress & BIT0)
{
//EV3
STATE = EVT3;
//Read OP
//I2CDR = EEPROM[I2COffset];
//I2CDR=eeprom[I2COffset];
if (I2COffset == 0)
{
I2CDR = eeprom_get_status();
}
else if (I2COffset == 1)
{
I2CDR = eeprom_get_cfg();
}
else if (I2COffset == 2)
{
I2CDR = eeprom_get_status_his();
}
else
{
I2CDR = 0xaa;
}
I2COffset++;
}
else
{
//EV2
STATE = EVT2;
if (I2COffset == INVALID_ADDR)
I2COffset = I2CDR;
else
{
//Write OP
//EEPROM[I2COffset] = I2CDR;
g_traped_pm_status = (PM_STATUS)I2CDR;
Trap;
//eeprom[I2COffset] = I2CDR;
//I2COffset++;
}
}
}
else if (SMBS_SR2 & STOPF)
{
//EV4
STATE = EVT_NONE;
I2COffset = INVALID_ADDR;
}
else
{
ResetI2C();
}
return;
}
