//get accelerometer samples, mask can choose which axis are requested (8b000_0zyx)
void accel_get_sample(int8_t *xdat, int8_t *ydat, int8_t *zdat, uint8_t mask)
{
uint8_t i2cbuffer[3];
//Initialize I2C master
i2c_init(I2C_SCL_RATIO(1), i2cbuffer, 3);
//for(int i = 0; i< 10000; i++){}
if((mask & 0x01) > 0) //send x axis
*xdat = (int8_t)(((uint8_t)(I2C_BYTE_READ(LIS3DH_ADDR, LIS3DH_OUT_X_H))));
if((mask & 0x02) > 0) //send y axis
*ydat = (int8_t)(((uint8_t)(I2C_BYTE_READ(LIS3DH_ADDR, LIS3DH_OUT_Y_H))));
if((mask & 0x04) > 0) //send z axis
*zdat = (int8_t)(((uint8_t)(I2C_BYTE_READ(LIS3DH_ADDR, LIS3DH_OUT_Z_H))));
}
void accel_get_XY_samples(int8_t *xdat, int8_t *ydat, uint8_t samps)
{
uint8_t i2cbuffer[3];
int i;
//Initialize I2C master
i2c_init(I2C_SCL_RATIO(1), i2cbuffer, 3);
for(i = 0; i< 10000; i++);//wait for i2c clock to lock
for(i = 0; i< samps; i++)
{
xdat[i] = (int8_t)(((uint8_t)(I2C_BYTE_READ(LIS3DH_ADDR, LIS3DH_OUT_X_H))));
ydat[i] = (int8_t)(((uint8_t)(I2C_BYTE_READ(LIS3DH_ADDR, LIS3DH_OUT_Y_H))));
}
}
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);
}
}
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");
}
