void MMA_init(void) {
uint8_t data2[2];
twi_master_transfer(MMA_ADDRESS, mma_init_cmd, 2, TWI_ISSUE_STOP);
twi_master_transfer(MMA_ADDRESS, mma_init_cmd2, 2, TWI_ISSUE_STOP);
twi_master_transfer(MMA_ADDRESS, mma_reg_who_am_i, 1, TWI_DONT_ISSUE_STOP);
twi_master_transfer(MMA_ADDRESS | TWI_READ_BIT, data2, 1, TWI_ISSUE_STOP);
}
bool fb_getTopLEDs(uint8_t faceNum, bool *redOn, bool *greenOn, bool *blueOn) {
uint8_t twiBuf[2];
bool success = true;
if ((faceNum < 1) || (faceNum > 6)) {
return false;
}
twi_master_init();
twiBuf[0] = FB_REGISTER_ADDR_LEDS_TOP;
success &= twi_master_transfer((faceNum << 1), twiBuf, 1, true);
success &= twi_master_transfer((faceNum << 1) | TWI_READ_BIT, twiBuf, 1, true);
twi_master_deinit();
if (success) {
*redOn = (twiBuf[0] & 0x01) ? true : false;
*greenOn = (twiBuf[0] & 0x02) ? true : false;
*blueOn = (twiBuf[0] & 0x04) ? true : false;
}
return success;
}
bool fb_getIRTxLEDs(uint8_t faceNum, bool *led1, bool *led2, bool *led3, bool *led4) {
uint8_t twiBuf[2];
bool success = true;
if ((faceNum < 1) || (faceNum > 6)) {
return -1;
}
twi_master_init();
twiBuf[0] = FB_REGISTER_ADDR_TX_LED_SELECT;
success &= twi_master_transfer((faceNum << 1), twiBuf, 1, true);
success &= twi_master_transfer((faceNum << 1) | TWI_READ_BIT, twiBuf, 1, true);
twi_master_deinit();
if (success) {
*led1 = (twiBuf[0] & 0x01) ? true : false;
*led2 = (twiBuf[0] & 0x02) ? true : false;
*led3 = (twiBuf[0] & 0x04) ? true : false;
*led4 = (twiBuf[0] & 0x08) ? true : false;
}
return success;
}
bool fb_getRxEnable(uint8_t faceNum, bool *rxEnabled) {
uint8_t twiBuf[2];
bool success = true;
if (faceNum > 6) {
return -1;
}
twi_master_init();
twiBuf[0] = FB_REGISTER_ADDR_RX_ENABLE;
success &= twi_master_transfer((faceNum << 1), twiBuf, 1, true);
success &= twi_master_transfer((faceNum << 1) | TWI_READ_BIT, twiBuf, 1, true);
twi_master_deinit();
if (twiBuf[0] & 0x01) {
*rxEnabled = true;
} else {
*rxEnabled = false;
}
return success;
}
bool mpu6050_register_read(uint8_t register_address, uint8_t *destination, uint8_t number_of_bytes)
{
bool transfer_succeeded;
transfer_succeeded = twi_master_transfer(m_device_address, ®ister_address, 1, TWI_DONT_ISSUE_STOP);
transfer_succeeded &= twi_master_transfer(m_device_address|TWI_READ_BIT, destination, number_of_bytes, TWI_ISSUE_STOP);
return transfer_succeeded;
}
int16_t fb_getAmbientLight(uint8_t faceNum) {
uint8_t twiBuf[2];
bool success = true;
int16_t ambientLight;
if ((faceNum < 1) || (faceNum > 6)) {
return -1;
}
twi_master_init();
twiBuf[0] = FB_REGISTER_ADDR_AMBIENT_LIGHT;
success &= twi_master_transfer((faceNum << 1), twiBuf, 1, true);
success &= twi_master_transfer((faceNum << 1) | TWI_READ_BIT, twiBuf, 2, true);
twi_master_deinit();
/* The 10-bit result is returned left-shifted so that it is possible to
* read just one byte and still get most of the resolution (even though
* we still read both bytes). */
ambientLight = twiBuf[0] << 2;
ambientLight |= twiBuf[1] >> 6;
if (!success) {
ambientLight = -1;
}
return ambientLight;
}
bool AT24CXX_ReadOneByte(uint8_t register_address, uint8_t *destination, uint8_t number_of_bytes)
{
bool transfer_succeeded;
transfer_succeeded = twi_master_transfer(AT24XXADDRESS, ®ister_address, 1, TWI_DONT_ISSUE_STOP);
transfer_succeeded &= twi_master_transfer(AT24XXADDRESS|TWI_READ_BIT, destination, number_of_bytes, TWI_ISSUE_STOP);
return transfer_succeeded;
}
/**
* @brief Function for reading the current configuration of the sensor.
*
* @return uint8_t Zero if communication with the sensor failed. Contents (always non-zero) of configuration register (@ref SHT2X_ONESHOT_MODE and @ref SHT2X_CONVERSION_DONE) if communication succeeded.
*/
static sht2x_error_t sht2x_config_read(user_register_t* user_register)
{
read_config_result_t result;
sht2x_error_t error = SHT2X_ERROR_NONE;
uint8_t command = USER_REG_R;
// Write: command protocol
if (twi_master_transfer(SHT2X_I2C_ADDRESS, &command, 1, TWI_DONT_ISSUE_STOP))
{
if (twi_master_transfer(SHT2X_I2C_ADDRESS | TWI_READ_BIT, (uint8_t*)&result.raw, sizeof(read_config_result_t), TWI_DONT_ISSUE_STOP)) // Read: current configuration
{
// validate checksum
uint8_t checksum_error = sht2x_check_crc((uint8_t*)&result.result.user_register, sizeof(user_register_t), result.result.checksum);
if (checksum_error == SHT2X_ERROR_CRC || checksum_error)
{
// propagate out the error. Poor design probably.
return SHT2X_ERROR_CRC;
}
// Read succeeded
*user_register = result.raw;
}
else
{
error = SHT2X_ERROR_READ_FAILED;
}
}
else
{
error = SHT2X_ERROR_READ_FAILED;
}
return error;
}
static void
adc121c02_read_register(uint8_t addr, void *data, size_t len)
{
uint8_t cmd[] = { addr };
twi_master_transfer(ADC121C02, cmd, sizeof(cmd), TWI_DONT_ISSUE_STOP);
twi_master_transfer(ADC121C02 | TWI_READ_BIT, data, len, TWI_ISSUE_STOP);
}
bool hs3000a_read(uint8_t register_address, uint8_t * destination, uint8_t number_of_bytes)
{
bool transfer_succeeded;
transfer_succeeded = twi_master_transfer(HS3000A_ADDR, ®ister_address, 1, TWI_DONT_ISSUE_STOP);
transfer_succeeded &= twi_master_transfer(HS3000A_ADDR|TWI_READ_BIT, destination, number_of_bytes, TWI_ISSUE_STOP);
return transfer_succeeded;
}
bool read_registers(uint8_t device_address, uint8_t register_address, int size, uint8_t *value)
{
bool transfer_succeeded = true;
transfer_succeeded &= twi_master_transfer(device_address, ®ister_address, 1, TWI_DONT_ISSUE_STOP);
if (transfer_succeeded)
{
transfer_succeeded &= twi_master_transfer(device_address | TWI_READ_BIT, value, size, TWI_ISSUE_STOP);
}
return transfer_succeeded;
}
bool mpu6050_readBytes(uint8_t addr, uint8_t *data, uint8_t nBytes) {
bool success = true;
/* The caller must initialize the TWI interface */
if (!twi_master_get_init()) {
return false;
}
success &= twi_master_transfer((mpu6050Address<<1), &addr, 1, TWI_DONT_ISSUE_STOP);
success &= twi_master_transfer((mpu6050Address<<1) | TWI_READ_BIT, data, nBytes, TWI_ISSUE_STOP);
return success;
}
bool db_getVersion(char *verStr, uint8_t verStrSize) {
uint8_t twiBuf[34];
uint32_t time_ms;
char *strPtr;
twi_master_init();
twiBuf[0] = DB_VERSION_CMD;
if (!twi_master_transfer((DB_TWI_ADDR << 1), twiBuf, 1, true)) {
twi_master_deinit();
return false;
}
delay_ms(DB_POLL_FIRST_INTERVAL_MS);
for (time_ms = 0; time_ms < DB_VERSION_TIMEOUT_MS; time_ms += DB_POLL_INTERVAL_MS) {
if (!twi_master_transfer((DB_TWI_ADDR << 1) | TWI_READ_BIT, twiBuf, sizeof(twiBuf), true)) {
/* If the daughterboard fails to respond to the I2C master read,
* something is wrong, so we return failure. */
twi_master_deinit();
return false;
}
/* If the daughterboard responds and echoes the command code in the the
* first byte, and the second byte is 0x01, the version command was
* successful. */
if ((twiBuf[0] == DB_VERSION_CMD) && (twiBuf[1] == 0x01)) {
/* The following bytes contain a human-readable version string. */
strPtr = (char *)&twiBuf[2];
/* If the version string will fit into the buffer provided by the
* caller, we copy it. Otherwise, we copy whatever will fit and
* add a null-terminator. */
if (strlen(strPtr) < verStrSize) {
strcpy(verStr, strPtr);
} else {
strncpy(verStr, strPtr, verStrSize - 1);
verStr[verStrSize-1] = '\0';
}
twi_master_deinit();
return true;
}
/* If the daughterboard responded but has not yet processed the command
* we delay and then try to read from the daughterboard again. */
delay_ms(DB_POLL_INTERVAL_MS);
}
twi_master_deinit();
return false;
}
bool db_setLEDs(bool redOn, bool greenOn, bool blueOn) {
uint8_t twiBuf[2];
uint32_t time_ms;
twi_master_init();
twiBuf[0] = DB_LED_CMD;
twiBuf[1] = 0x00;
if (redOn) {
twiBuf[1] |= 0x01;
}
if (greenOn) {
twiBuf[1] |= 0x02;
}
if (blueOn) {
twiBuf[1] |= 0x04;
}
if (!twi_master_transfer((DB_TWI_ADDR << 1), twiBuf, 2, true)) {
twi_master_deinit();
return false;
}
delay_ms(DB_POLL_FIRST_INTERVAL_MS);
for (time_ms = 0; time_ms < DB_LED_TIMEOUT_MS; time_ms += DB_POLL_INTERVAL_MS) {
if (!twi_master_transfer((DB_TWI_ADDR << 1) | TWI_READ_BIT, twiBuf, sizeof(twiBuf), true)) {
/* If the daughterboard fails to respond to the I2C master read,
* something is wrong, so we return failure. */
twi_master_deinit();
return false;
}
/* If the daughterboard responds and echoes the command code in the the
* first byte, and the second byte is 0x01, the temperature command was
* successful. */
if ((twiBuf[0] == DB_LED_CMD) && (twiBuf[1] == 0x01)) {
twi_master_deinit();
return true;
}
/* If the daughterboard responded but has not yet processed the command
* we delay and then try to read from the daughterboard again. */
delay_ms(DB_POLL_INTERVAL_MS);
}
twi_master_deinit();
return false;
}
bool nrf6350_lcd_set_contrast(uint8_t contrast)
{
nrf_delay_us(10000);
data_buffer[0] = FUNC_SET;
data_buffer[1] = 0x70 | contrast;
return twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP);
}
static bool nrf6350_lcd_set_instruction(uint8_t instr)
{
nrf_delay_us(10000);
data_buffer[0] = FUNC_SET;
data_buffer[1] = instr;
return twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP);
}
bool ds1624_init(uint8_t device_address)
{
bool transfer_succeeded = true;
m_device_address = DS1634_BASE_ADDRESS + (uint8_t)(device_address << 1);
uint8_t config = ds1624_config_read();
if (config != 0)
{
// Configure DS1624 for 1SHOT mode if not done so already.
if (!(config & DS1624_ONESHOT_MODE))
{
uint8_t data_buffer[2];
data_buffer[0] = command_access_config;
data_buffer[1] = DS1624_ONESHOT_MODE;
transfer_succeeded &= twi_master_transfer(m_device_address, data_buffer, 2, TWI_ISSUE_STOP);
}
}
else
{
transfer_succeeded = false;
}
return transfer_succeeded;
}
bool nrf6350_js_get_value(int8_t *val)
{
uint8_t js_data;
if (!twi_master_transfer(JS_ADDR << 1 | TWI_READ_BIT, data_buffer, 1, TWI_ISSUE_STOP))
return false;
js_data = (~data_buffer[0] & 0x1D); // Select the useful bits.
if((js_data & 0x01) != 0) // Check joystick position.
{
val[X] = -1;
}
else if((js_data & 0x10) != 0)
{
val[X] = 1;
}
else
{
val[X] = 0;
}
if((js_data & 0x04) != 0)
{
val[Y] = 1;
}
else if((js_data & 0x08) != 0)
{
val[Y] = -1;
}
else
{
val[Y] = 0;
}
return true;
}
bool fb_sleep(uint8_t faceNum, bool sleepEnabled) {
uint8_t twiBuf[2];
bool success;
if (faceNum > 6) {
return false;
}
twi_master_init();
twiBuf[0] = FB_REGISTER_ADDR_SLEEP;
if (sleepEnabled) {
twiBuf[1] = 0x01;
} else {
twiBuf[1] = 0x00;
}
success = twi_master_transfer((faceNum << 1), twiBuf, 2, true);
/* After sending a sleep command, we do not attempt to read a response
* because doing so will wake-up the daughterboard processor. */
twi_master_deinit();
return success;
}
bool nrf6350_lcd_off(void)
{
nrf_delay_us(10000);
data_buffer[0] = FUNC_SET;
data_buffer[1] = 0x08;
return twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP);
}
bool AT24CXX_WriteOneByte(uint8_t register_address, uint8_t value)
{
uint8_t w2_data[2];
w2_data[0] = register_address;
w2_data[1] = value;
return twi_master_transfer(AT24XXADDRESS, w2_data, 2, TWI_ISSUE_STOP);
}
// send data
size_t rgb_lcd_write(uint8_t value)
{
unsigned char dta[2] = {0x40, value};
// ardunio: i2c_send_byteS(dta, 2);
twi_master_transfer (LCD_ADDRESS, dta, 2, true);
return 1; // assume sucess
}
/**********************************************
//
// write cmd api
**********************************************/
void Write_Command(uint8_t command)
{
uint8_t send[2];
// send[0] = Slave_Address;
send[0] = OP_Command;
send[1] = command;
twi_master_transfer(Slave_Address, send, 2 ,TWI_ISSUE_STOP );
}
/**********************************************
//
// write data api
//
**********************************************/
void Write_Data(uint8_t data)
{
uint8_t send[2];
// send[0] = Slave_Address;
send[0] = OP_Data;
send[1] = data;
twi_master_transfer(Slave_Address, send, 2 ,TWI_ISSUE_STOP );
}
bool mpu6050_writeBytes(uint8_t *addrData, uint8_t nBytes) {
/* The caller must initialize the TWI interface */
if (!twi_master_get_init()) {
return false;
}
return twi_master_transfer((mpu6050Address<<1), addrData, nBytes, TWI_ISSUE_STOP);
}
char mpu6050_read(uint8_t device_addr, uint8_t register_addr, uint8_t *register_data, uint8_t read_length)
{
if(read_length < 1)
{
xprintf("read length error.\r\n");
return false;
}
else
{
device_addr = (device_addr << 1) & 0xFE;
twi_master_transfer(device_addr, ®ister_addr, 1, TWI_DONT_ISSUE_STOP); // write
device_addr = device_addr | 0x01;
twi_master_transfer(device_addr, register_data, read_length, TWI_ISSUE_STOP); // read
return true;
}
}
bool mpu6050_register_write(uint8_t register_address, uint8_t value)
{
uint8_t w2_data[2];
w2_data[0] = register_address;
w2_data[1] = value;
return twi_master_transfer(m_device_address, w2_data, 2, TWI_ISSUE_STOP);
}
static bool hs3000a_write(uint8_t register_address, uint8_t value)
{
uint8_t w2_data[2];
w2_data[0] = register_address;
w2_data[1] = value;
return twi_master_transfer(HS3000A_ADDR, w2_data, 2, TWI_ISSUE_STOP);
}
void
tcs3771_init(void)
{
uint8_t data[] = {
TCS3771_CONTROL_PDIODE_IR
};
tcs3771_write_register(TCS3771_CONTROL, data, sizeof(data));
uint8_t data2[] = {
1
};
tcs3771_write_register(TCS3771_PPULSE, data2, sizeof(data2));
uint8_t data3[] = {
216
};
tcs3771_write_register(TCS3771_WTIME, data3, sizeof(data3));
uint16_t data4[] = {
0x130, /* lower limit */
0x170 /* high limit */
};
tcs3771_write_register(TCS3771_PILT, data4, sizeof(data4));
uint16_t data6[] = {
0x130, /* lower limit */
0x170 /* high limit */
};
tcs3771_write_register(TCS3771_AILT, data6, sizeof(data6));
uint8_t data5[] = {
TCS3771_PERS_PPERS(10)
};
tcs3771_write_register(TCS3771_PERS, data5, sizeof(data5));
uint8_t data1[] = {
TCS3771_ENABLE_PON | TCS3771_ENABLE_PEN | TCS3771_ENABLE_WEN | TCS3771_ENABLE_AEN | TCS3771_ENABLE_PIEN | TCS3771_ENABLE_AIEN
};
tcs3771_write_register(TCS3771_ENABLE, data1, sizeof(data1));
//reset RGBC and PROX INTs
uint8_t int_reset[] = {
// 0x05 CLEAR PROX INT
// 0x06 CLEAR RGBC INT
// 0x07 CLEAR BOTH INT
TCS3771_COMMAND_SELECT | TCS3771_COMMAND_TYPE_SPECIAL | 0x07
};
twi_master_transfer(TCS3771, int_reset, sizeof(int_reset), TWI_ISSUE_STOP);
uint8_t rgb_cycles[] = {
252
};
tcs3771_write_register(TCS3771_ATIME, rgb_cycles, sizeof(rgb_cycles));
uint8_t prox_cycles[] = {
254
};
tcs3771_write_register(TCS3771_PTIME, prox_cycles, sizeof(prox_cycles));
}
bool nrf6350_lcd_clear(void)
{
nrf_delay_us(10000);
data_buffer[0] = FUNC_SET;
data_buffer[1] = (uint8_t)(DDRAM_ADR + LCD_UPPER_LINE);
if (!twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP))
return false;
if (!twi_master_transfer(LCD_ADDR << 1, empty_str, 18, TWI_ISSUE_STOP))
{
return false;
}
data_buffer[1] = DDRAM_ADR + LCD_LOWER_LINE;
if (!twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP))
return false;
if (!twi_master_transfer(LCD_ADDR << 1, empty_str, 18, TWI_ISSUE_STOP))
return false;
return true;
}
