void accel_disable_int(void)
{
uint8_t i2cbuffer[4];
//Initialize I2C master
i2c_init(I2C_SCL_RATIO(1), i2cbuffer, 4);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG3, 0x00); //turn off FIFO interrupt
}
//enable accelerometer for pedometer
void accel_enable_fifo(void)
{
uint8_t i2cbuffer[4];
//QPRINTF("Configuring FIFO...");
accel_shutdown(); //reset accel
//Initialize I2C master
i2c_init(I2C_SCL_RATIO(1), i2cbuffer, 4);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG1, LIS3DH_50HZ | LIS3DH_LP | LIS3DH_ENX | LIS3DH_ENY | LIS3DH_ENZ); //turn on XYZ, low power, 50Hz
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_FIFO_CTRL_REG, LIS3DH_FIFO_MODE | ACCEL_FIFO_DEPTH); //fifo mode, watermark length 10, Send to inerrupt to INT1
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG5, LIS3DH_FIFO_EN | LIS3DH_LIR_INT1); //Enable FIFO
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG3, LIS3DH_FIFO_WM | LIS3DH_INT1_EN | LIS3DH_FIFO_OVERRUN); //Enable FIFO watermark interrupt 1
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG2, LIS3DH_HPF_EN); //enalbe high pass filter for pedometer, disable for better value range on all XYZ axis
//I2C_BYTE_READ(LIS3DH_ADDR, LIS3DH_HP_FILTER_RESET); //reset high pass filter zero level to current
//QPRINTF("Done\r\n");
}
void accel_disable_temp(void)
{
uint8_t i2cbuffer[4];
//QPRINTF("Disabling Temp Sensor...");
//Initialize I2C master
i2c_init(I2C_SCL_RATIO(1), i2cbuffer, 4);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_TEMP_CFG_REG, 0x00); //disable ADC and Temp sensor
// QPRINTF("Done\r\n");
}
//enable accelerometer for single sample, no interrupt
void accel_enable_sample(void)
{
uint8_t i2cbuffer[4];
accel_shutdown(); //reset accel
//Initialize I2C master
i2c_init(I2C_SCL_RATIO(1), i2cbuffer, 4);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG1, LIS3DH_50HZ | LIS3DH_LP | LIS3DH_ENX | LIS3DH_ENY | LIS3DH_ENZ);
//original stuff for init below:
//I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG1, LIS3DH_50HZ | LIS3DH_LP | LIS3DH_ENX | LIS3DH_ENY | LIS3DH_ENZ);
}
void accel_enable_temp(void)
{
uint8_t i2cbuffer[4];
//QPRINTF("Configuring Temp Sensor...");
//Initialize I2C master
i2c_init(I2C_SCL_RATIO(1), i2cbuffer, 4);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_TEMP_CFG_REG, LIS3DH_ADC_EN | LIS3DH_TEMP_EN); //Enable ADC and Temp sensor
//I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG4, LIS3DH_BDU); //Enable Block Data Update
//QPRINTF("Done\r\n");
}
int main (void)
{
uint32_t j;
uint8_t buffer[100];
uint8_t rxbuffer[100];
SystemInit();
//Initialize I2C master
i2c_init(I2C_SCL_RATIO(100000), i2cbuffer, 104);
for (j = 0; j < 100; j++) {
buffer[j] = 0x55 + j;
rxbuffer[j] = 0;
}
while (1) /* Loop forever */
{
// Write 1byte data(0x80) to register(address is 0x00 and 1byte) of device(address is 0x21)
I2C_BYTE_WRITE(0x21, 0x00, 0x80);
// Read 1byte data from register(address is 0x06 and 1byte) of device(address is 0x21)
buffer[0] = I2C_BYTE_READ(0x21, 0x06);
// Write 1byte data(0x11) to register(address is 0x00 and 2byte) of device(address is 0x50)
I2C_BYTE_WRITE2(0x50, 0x00, 0x11);
// Read 1byte data from register(address is 0x00 and 2byte) of device(address is 0x50)
buffer[0] = I2C_BYTE_READ2(0x50, 0x00);
// Write nbyte data(50byte) to register(address is 0x00 and 2byte) of device(address is 0x50)
I2C_nBYTE_WRITE2(0x50, 0x00, buffer, 50);
// Read nbyte data(60byte) from register(address is 0x00 and 2byte) of device(address is 0x50)
I2C_nBYTE_READ2(0x50, 0x00, rxbuffer, 60);
}
}
void accel_shutdown(void)
{
uint8_t i2cbuffer[4];
//Initialize I2C master
i2c_init(I2C_SCL_RATIO(1), i2cbuffer, 4);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG1, LIS3DH_POWER_DOWN);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG5, LIS3DH_BOOT); //reboot regs
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG6, LIS3DH_BOOT_I1);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG1, 0x00); //power down
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG2, 0x00);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG3, 0x00);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG4, 0x00);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG5, 0x00);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG6, 0x00);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_FIFO_CTRL_REG, 0x00);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_INT1_CFG, 0x00);
}
int ble_i2c( const uint8_t * const pcCommandString,uint8_t* pcWriteBuffer,uint32_t commpare_length)
{
const int8_t *pcom;
uint32_t pxParameterStringLength;
uint8_t len;
uint8_t i2c_addr ;
uint8_t i2c_reg ;
uint8_t i2c_data;
if(pcCommandString[commpare_length+1] == '=')
{
//i2c_addr
pcom = at_get_parameter((const int8_t*)pcCommandString + commpare_length + 2, 1, &pxParameterStringLength);
if(pxParameterStringLength > 0)
{
i2c_addr = at_HEXstringToNum((const uint8_t *)pcom, pxParameterStringLength);
}
else
{
goto pram_err;
}
//i2c_reg
pcom = at_get_parameter((const int8_t*)pcCommandString + commpare_length + 2, 2, &pxParameterStringLength);
if(pxParameterStringLength > 0)
{
i2c_reg = at_HEXstringToNum((const uint8_t *)pcom, pxParameterStringLength);
}
else
{
goto pram_err;
}
// i2c R&W?
pcom = at_get_parameter((const int8_t*)pcCommandString + commpare_length + 2, 0, &pxParameterStringLength);
if(pxParameterStringLength == 1)
{
syscon_SetPMCR1WithMask(QN_SYSCON,P23_MASK_PIN_CTRL | P24_MASK_PIN_CTRL,P23_I2C_SDA_PIN_CTRL | P24_I2C_SCL_PIN_CTRL);
i2c_init(I2C_SCL_RATIO(100000), i2c_buff, 4);
if(pcom[0] == 'R')
{
i2c_data = I2C_BYTE_READ(i2c_addr,i2c_reg);
if(i2c_is_finish())
{
len = commpare_length+1;
memcpy(pcWriteBuffer, pcCommandString, len);
len += sprintf((char *)pcWriteBuffer + len,":0x%02x\r\nOK\r\n",i2c_data);
return len;
}
goto pram_err;
}
else if(pcom[0] == 'W')
{
//i2c_data
pcom = at_get_parameter((const int8_t*)pcCommandString + commpare_length + 2, 3, &pxParameterStringLength);
if(pxParameterStringLength > 0)
{
i2c_data = at_HEXstringToNum((const uint8_t *)pcom, pxParameterStringLength);
}
else
{
goto pram_err;
}
I2C_BYTE_WRITE(i2c_addr, i2c_reg, i2c_data);
if(!i2c_is_finish())
{
goto pram_err;
}
}
}
else
{
goto pram_err;
}
}
else
{
goto pram_err;
}
return sprintf((char*)pcWriteBuffer,"OK\r\n");
pram_err:
return sprintf((char*)pcWriteBuffer,"ERR\r\n");
}
