/*!
\param freq desired frequency. 40Hz to 1000Hz using internal 25MHz oscillator.
*/
void PCA9685::setPWMFreq(int freq) {
uint8_t prescale_val = (CLOCK_FREQ / 4096 / freq) - 1;
bcm2835_i2c_set_baudrate(400000);
bcm2835_i2c_setSlaveAddress(addr);
pca_sendBuf[0] = MODE1;
pca_sendBuf[1] = 0x10;
bcm2835_i2c_write (pca_sendBuf, 2);
pca_sendBuf[0] = PRE_SCALE;
pca_sendBuf[1] = prescale_val;
bcm2835_i2c_write (pca_sendBuf, 2);
pca_sendBuf[0] = MODE1;
pca_sendBuf[1] = 0x80;
bcm2835_i2c_write (pca_sendBuf, 2);
pca_sendBuf[0] = MODE2;
pca_sendBuf[1] = 0x04;
bcm2835_i2c_write (pca_sendBuf, 2);
//i2c->write_byte(MODE1, 0x10); //sleep
//i2c->write_byte(PRE_SCALE, prescale_val); // multiplyer for PWM frequency
//i2c->write_byte(MODE1, 0x80); //restart
//i2c->write_byte(MODE2, 0x04); //totem pole (default)
}
/*!
\param led channel to set PWM value for
\param on_value 0-4095 value to turn on the pulse
\param off_value 0-4095 value to turn off the pulse
*/
void PCA9685::setPWM(uint8_t led, int on_value, int off_value) {
bcm2835_i2c_set_baudrate(400000);
bcm2835_i2c_setSlaveAddress(addr);
pca_sendBuf[0] = LED0_ON_L + LED_MULTIPLYER * (led - 1);
pca_sendBuf[1] = on_value & 0xFF;
bcm2835_i2c_write (pca_sendBuf, 2);
pca_sendBuf[0] = LED0_ON_H + LED_MULTIPLYER * (led - 1);
pca_sendBuf[1] = on_value >> 8;
bcm2835_i2c_write (pca_sendBuf, 2);
pca_sendBuf[0] = LED0_OFF_L + LED_MULTIPLYER * (led - 1);
pca_sendBuf[1] = off_value & 0xFF;
//std::cout << (int)pca_sendBuf[1] << std::endl;
bcm2835_i2c_write (pca_sendBuf, 2);
pca_sendBuf[0] = LED0_OFF_H + LED_MULTIPLYER * (led - 1);
pca_sendBuf[1] = off_value >> 8;
//std::cout << (int)pca_sendBuf[1] << std::endl;
bcm2835_i2c_write (pca_sendBuf, 2);
//i2c->write_byte(LED0_ON_L + LED_MULTIPLYER * (led - 1), on_value & 0xFF);
//i2c->write_byte(LED0_ON_H + LED_MULTIPLYER * (led - 1), on_value >> 8);
//i2c->write_byte(LED0_OFF_L + LED_MULTIPLYER * (led - 1), off_value & 0xFF);
//i2c->write_byte(LED0_OFF_H + LED_MULTIPLYER * (led - 1), off_value >> 8);
}
uint8_t I2C_Bus::write_register(char reg, const char *buf, const uint32_t len) const
{
uint8_t status = bcm2835_i2c_write(®, 1);
if (status != BCM2835_I2C_REASON_OK)
{
return status;
}
return bcm2835_i2c_write(buf, len);
}
int main(int argc, char **argv)
{
unsigned char buf[6];
unsigned char i,reg;
double temp=0,calc=0, skytemp,atemp;
FILE *flog;
flog=fopen("mlxlog.csv", "a");
bcm2835_init();
bcm2835_i2c_begin();
bcm2835_i2c_set_baudrate(25000);
// set address...........................................................................................
bcm2835_i2c_setSlaveAddress(0x5a);
printf("\nOk, your device is working!!\n");
while(1) {
time_t t = time(NULL);
struct tm tm = *localtime(&t);
calc=0;
reg=7;
for(i=0;i<AVG;i++){
bcm2835_i2c_begin();
bcm2835_i2c_write (®, 1);
bcm2835_i2c_read_register_rs(®,&buf[0],3);
temp = (double) (((buf[1]) << 8) + buf[0]);
temp = (temp * 0.02)-0.01;
temp = temp - 273.15;
calc+=temp;
sleep(1);
}
skytemp=calc/AVG;
calc=0;
reg=6;
for(i=0;i<AVG;i++){
bcm2835_i2c_begin();
bcm2835_i2c_write (®, 1);
bcm2835_i2c_read_register_rs(®,&buf[0],3);
temp = (double) (((buf[1]) << 8) + buf[0]);
temp = (temp * 0.02)-0.01;
temp = temp - 273.15;
calc+=temp;
sleep(1);
}
atemp=calc/AVG;
printf("%02d-%02d %02d:%02d:%02d\n Tambi=%04.2f C, Tobj=%04.2f C\n", tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec,atemp,skytemp);
fprintf(flog,"%04d-%02d-%02d %02d:%02d:%02d,%04.2f,%04.02f\n",tm.tm_year+1900, tm.tm_mon +1, tm.tm_mday,tm.tm_hour, tm.tm_min, tm.tm_sec,atemp,skytemp);
fflush(flog);
sleep(LOGTIME-(2*AVG));
}
printf("[done]\n");
}
void mcp7941x_set_date_time(struct rtc_time *t) {
static char cmd[] = {MCP7941X_RTCC_TCR_SECONDS};
char reg[] = {0,0,0,0,0,0,0};
reg[MCP7941X_RTCC_TCR_SECONDS] = DEC2BCD(t->tm_sec & 0x7f);
reg[MCP7941X_RTCC_TCR_MINUTES] = DEC2BCD(t->tm_min & 0x7f);
reg[MCP7941X_RTCC_TCR_HOURS] = DEC2BCD(t->tm_hour & 0x1f);
reg[MCP7941X_RTCC_TCR_DAY] = DEC2BCD(t->tm_wday & 0x07);
reg[MCP7941X_RTCC_TCR_DATE] = DEC2BCD(t->tm_mday & 0x3f);
reg[MCP7941X_RTCC_TCR_MONTH] = DEC2BCD(t->tm_mon & 0x1f);
reg[MCP7941X_RTCC_TCR_YEAR] = DEC2BCD(t->tm_year);
reg[MCP7941X_RTCC_TCR_SECONDS] |= MCP7941X_RTCC_BIT_ST;
reg[MCP7941X_RTCC_TCR_DAY] |= MCP7941X_RTCC_BIT_VBATEN;
char data[8];
data[0] = cmd[1];
data[1] = reg[0];
data[2] = reg[1];
data[3] = reg[2];
data[4] = reg[3];
data[5] = reg[4];
data[6] = reg[5];
data[7] = reg[6];
mcp7941x_setup();
bcm2835_i2c_write(data, sizeof(data)/sizeof(char));
}
int WriteRegister(int REG,int value)
{
regaddr[0]=REG;
regaddr[1]=value;
return(bcm2835_i2c_write(regaddr, 2));
}
//! Sets PCA9685 mode to 00
void PCA9685::reset() {
bcm2835_init();
bcm2835_i2c_set_baudrate(400000);
bcm2835_i2c_setSlaveAddress(addr);
pca_sendBuf[0] = MODE1;
pca_sendBuf[1] = 0x00;
bcm2835_i2c_write (pca_sendBuf, 2);
pca_sendBuf[0] = MODE2;
pca_sendBuf[1] = 0x04;
bcm2835_i2c_write (pca_sendBuf, 2);
//i2c->write_byte(MODE1, 0x00); //Normal mode
//i2c->write_byte(MODE2, 0x04); //totem pole
}
// Read bytesToRead sequentially, starting at addressToRead into the dest byte array
void readRegisters(char addressToRead, int bytesToRead, char* dest)
{
//Set Address to read
bcm2835_i2c_write(&addressToRead, 1);
//Get reading
bcm2835_i2c_read_register_rs(&addressToRead,dest,bytesToRead);
}
/**
*@brief Writes a byte value to a register address
*@param reg Address of sensor register.
*@param data Data byte to be written on register.
*@return none
*/
void I2C_WriteByteRegister(unsigned char reg,unsigned char data)
{
unsigned char wr_buf[2];
wr_buf[0] = reg;
wr_buf[1] = data;
bcm2835_i2c_write((const char *)wr_buf, 2);
}
int main(int argc, char **argv) {
printf("Running ... \n");
// parse the command line
if (comparse(argc, argv) == EXIT_FAILURE) return showusage (EXIT_FAILURE);
if (!bcm2835_init())
{
printf("bcm2835_init failed. Are you running as root??\n");
return 1;
}
// I2C begin if specified
if (init == I2C_BEGIN)
{
if (!bcm2835_i2c_begin())
{
printf("bcm2835_i2c_begin failed. Are you running as root??\n");
return 1;
}
}
// If len is 0, no need to continue, but do I2C end if specified
if (len == 0) {
if (init == I2C_END) bcm2835_i2c_end();
printf("... done!\n");
return EXIT_SUCCESS;
}
bcm2835_i2c_setSlaveAddress(slave_address);
bcm2835_i2c_setClockDivider(clk_div);
fprintf(stderr, "Clock divider set to: %d\n", clk_div);
fprintf(stderr, "len set to: %d\n", len);
fprintf(stderr, "Slave address set to: %d\n", slave_address);
if (mode == MODE_READ) {
for (i=0; i<MAX_LEN; i++) buf[i] = 'n';
data = bcm2835_i2c_read(buf, len);
printf("Read Result = %d\n", data);
for (i=0; i<MAX_LEN; i++) {
if(buf[i] != 'n') printf("Read Buf[%d] = %x\n", i, buf[i]);
}
}
if (mode == MODE_WRITE) {
data = bcm2835_i2c_write(wbuf, len);
printf("Write Result = %d\n", data);
}
// This I2C end is done after a transfer if specified
if (init == I2C_END) bcm2835_i2c_end();
bcm2835_close();
printf("... done!\n");
return 0;
}
/**
*@brief Writes a word value (16 bit) to a register address.
*@param reg Address of sensor register.
*@param data Data word to be written on word size register.
*@return none
*/
void I2C_WriteWordRegister(unsigned char reg, unsigned char* data)
{
unsigned char wr_buf[3];
wr_buf[0] = reg;
wr_buf[1] = data[0];
wr_buf[2] = data[1];
bcm2835_i2c_write((const char *)wr_buf, 3);
}
uint8_t MAG3110_WRITE_REGISTER(char reg, char value)
{
/* care the end of string '\n' here */
char data[2];
data[0] = reg;
data[1] = value;
bcm2835_i2c_setSlaveAddress(MAG3110_I2C_ADDRESS);
bcm2835_i2c_write(data, 2);
}
int main(int argc, char **argv)
{
if (!bcm2835_init())
return 1;
char temp[1]; //temporary values
int ret;
int ad[2];
bcm2835_i2c_begin();
bcm2835_i2c_setSlaveAddress(0x29); // addr pin attached to ground
bcm2835_i2c_set_baudrate(1000); // Default
temp[0] = 0xa0; //select the control register
bcm2835_i2c_write(temp,1);
temp[0] = 0x03; //Power up the device
bcm2835_i2c_write(temp,1);
bcm2835_delay(500);
bcm2835_i2c_read(temp,1);
printf("%x - if 33 the device is turned on\n",temp[0]);
temp[0] = 0xac; //Channel 0 lower byte
bcm2835_i2c_write(temp,1);
bcm2835_i2c_read(temp,1);
ad[1]= (int)temp[0];
temp[0] = 0xad; //channel 0 upper byte
bcm2835_i2c_write(temp,1);
bcm2835_i2c_read(temp,1);
ad[0] = (int)temp[0];
printf("ad value:%d\n",ad[0]*256+ad[1]);
bcm2835_i2c_end();
bcm2835_close();
return 0;
}
int ReadRegisterPair(int REG_H)
{
char buf[1];
int ret;
int value = 0;
bcm2835_i2c_begin();
bcm2835_i2c_setSlaveAddress(MPU6050_ADDRESS);
regaddr[0]=REG_H;
ret = BCM2835_I2C_REASON_ERROR_DATA;
while(ret != BCM2835_I2C_REASON_OK)
{
//This is the basic operation to read an register
//regaddr[0] is the register address
//buf[0] is the value
bcm2835_i2c_write(regaddr, 1);
ret = bcm2835_i2c_read(buf, 1);
//printf("%d\n",ret);
}
value = buf[0]<<8;
regaddr[0]=(REG_H+1);
ret = BCM2835_I2C_REASON_ERROR_DATA;
while(ret != BCM2835_I2C_REASON_OK)
{
bcm2835_i2c_write(regaddr, 1);
ret = bcm2835_i2c_read(buf, 1);
}
value += buf[0];
if (value & 1<<15)
{
value -= 1<<16;
}
bcm2835_i2c_end();
//printf("%d ",value);
return value;
}
/**
*@brief Writes a byte value to a register address
*@param reg Address of sensor register.
*@param data Data byte to be written on register.
*@return none
*/
void I2C_WriteByteRegister(unsigned char address,unsigned char reg,unsigned char data)
{
bcm2835_i2c_setSlaveAddress(address);
unsigned char wr_buf[2];
wr_buf[0] = reg;
wr_buf[1] = data;
bcm2835_i2c_write((const char *)wr_buf, 2);
}
int readPage(int aI2CDevice, char aPage, unsigned char* aTagBuffer, int* aTagBufferLen)
{
int ret = BCM2835_I2C_REASON_ERROR_NACK; // Just needs to be not BCM2835_I2C_REASON_OK
int i;
struct s_cmdResponse* resp;
/* Set up command to select a tag */
cmdBuffer[0] = 2;
cmdBuffer[1] = SL030_READ_PAGE;
cmdBuffer[2] = aPage;
int tries = 0;
while ((tries++ < 12) && (ret != BCM2835_I2C_REASON_OK))
{
bcm2835_i2c_begin();
bcm2835_i2c_setSlaveAddress(SL030_ID);
ret = bcm2835_i2c_write(cmdBuffer, 3);
#if DEBUG
printf("write returned %d\n", ret);
#endif
usleep(12000);
memset(cmdBuffer, 0, CMD_BUF_LEN);
ret = bcm2835_i2c_read(cmdBuffer, cmdBufferLen);
bcm2835_i2c_end();
}
#if DEBUG
printf("read returned %d\n", ret);
for (i = 0; i < cmdBufferLen; i++)
{
printf("%02x ", cmdBuffer[i]);
}
printf("\n");
#endif
resp = (struct s_cmdResponse*)cmdBuffer;
#if DEBUG
printf("Length: %d\n", resp->iLength);
printf("Status: %d\n", resp->iStatus);
printf("Status: %u\n", (char)resp->iStatus);
#endif
if ((resp->iStatus == 0) && (resp->iLength > 2))
{
/* We found a tag! */
/* Copy the ID across */
/* drop 2 bytes from iLength: one each for command and status */
*aTagBufferLen = (resp->iLength - 2 > MAX_TAG_ID_LENGTH ? MAX_TAG_ID_LENGTH : resp->iLength-2);
memcpy(aTagBuffer, resp->iTag, *aTagBufferLen);
return 1;
}
else
{
return 0;
}
}
int main(int argc, char **argv) {
int first = 0x03, last = 0x77;
int flags = 0;
int version = 0;
while (1 + flags < argc && argv[1 + flags][0] == '-') {
switch (argv[1 + flags][1]) {
case 'V': version = 1; break;
case 'a':
first = 0x00;
last = 0x7F;
break;
default:
fprintf(stderr, "Warning: Unsupported flag \"-%c\"!\n", argv[1 + flags][1]);
//help(); // TODO
exit(1);
}
flags++;
}
if (version) {
fprintf(stderr, "i2cdetect version %s\n", VERSION);
exit(0);
}
if (bcm2835_init() != 1) {
fprintf(stderr, "bcm2835_init() failed\n");
exit(1);
}
bcm2835_i2c_begin();
bcm2835_i2c_setClockDivider(BCM2835_I2C_CLOCK_DIVIDER_2500); // 100kHz
int address;
for (address = 0x00; address <= 0x7F; address++) {
if (address < first || address > last) {
continue;
}
bcm2835_i2c_setSlaveAddress(address);
if (bcm2835_i2c_write(NULL, 0) == 0) {
printf("0x%.2X : 0x%.2X : %s\n", address, address << 1, lookup_device(address));
}
}
bcm2835_i2c_end();
bcm2835_close();
return 0;
}
/**
*@brief Writes a word value (16 bit) to a register address.
*@param reg Address of sensor register.
*@param data Data word to be written on word size register.
*@return none
*/
void I2C_WriteWordRegister(unsigned char address,unsigned char reg, unsigned char* data)
{
bcm2835_i2c_setSlaveAddress(address);
unsigned char wr_buf[3];
wr_buf[0] = reg;
wr_buf[1] = data[0];
wr_buf[2] = data[1];
bcm2835_i2c_write((const char *)wr_buf, 3);
}
static PyObject *
PyBCM2835_i2c_write(PyObject *self, PyObject *args)
{
char *buf;
int buf_len;
uint32_t len;
if (!PyArg_ParseTuple(args,"s#i",&buf, &buf_len,&len)) {
return NULL;
}
uint8_t rtn = bcm2835_i2c_write(buf, len);
return Py_BuildValue("i",rtn);
}
int checkForTag(int aI2CDevice, unsigned char* aTagBuffer, int* aTagBufferLen)
{
int ret = 0;
int i;
struct s_cmdResponse* resp;
/* Set up command to select a tag */
cmdBuffer[0] = 1;
cmdBuffer[1] = SL030_CMD_SELECT;
bcm2835_i2c_begin();
bcm2835_i2c_setSlaveAddress(SL030_ID);
ret = bcm2835_i2c_write(cmdBuffer, 2);
#if DEBUG
printf("write returned %d\n", ret);
#endif
usleep(30000);
memset(cmdBuffer, 0, CMD_BUF_LEN);
ret = bcm2835_i2c_read(cmdBuffer, cmdBufferLen);
bcm2835_i2c_end();
#if DEBUG
printf("read returned %d\n", ret);
for (i = 0; i < cmdBufferLen; i++)
{
printf("%02x ", cmdBuffer[i]);
}
printf("\n");
#endif
resp = (struct s_cmdResponse*)cmdBuffer;
#if DEBUG
printf("Length: %d\n", resp->iLength);
printf("Status: %d\n", resp->iStatus);
printf("Status: %u\n", (char)resp->iStatus);
#endif
/* We'll get a status of 128 for success on a Pi 1, and 0 for any later Pi models */
if ( ((resp->iStatus == 128) || (resp->iStatus == 0)) && (resp->iLength > 2) )
{
/* We found a tag! */
/* Copy the ID across */
/* drop 3 bytes from iLength: one each for command, status and tag type */
*aTagBufferLen = (resp->iLength - 3 > MAX_TAG_ID_LENGTH ? MAX_TAG_ID_LENGTH : resp->iLength-3);
memcpy(aTagBuffer, resp->iTag, *aTagBufferLen);
return 1;
}
else
{
return 0;
}
}
/**
*@brief Writes a buffer array to the registers
*@param reg Address of sensor register, address autoincrements
*@param data Pointer to byte data buffer array
*@param length length of buffer array
*@return none
*/
void I2C_WriteByteArray(char reg, char* data, unsigned int length)
{
char* wr_buf = (char*) malloc(sizeof(char) * length);
if (wr_buf==NULL)
{
printf("Error allocating memory!\n"); //print an error message
}
wr_buf[0] = reg;
for(unsigned int i = 1;i<length;i++)
{
wr_buf[i] = data[i];
}
bcm2835_i2c_write((const char *)wr_buf, length);
}
void mcp7941x_get_date_time(struct rtc_time *t) {
static char cmd[] = {MCP7941X_RTCC_TCR_SECONDS};
char reg[] = {0,0,0,0,0,0,0};
mcp7941x_setup();
bcm2835_i2c_write(cmd, sizeof(cmd)/sizeof(char));
bcm2835_i2c_read(reg, sizeof(reg)/sizeof(char));
t->tm_sec = BCD2DEC(reg[MCP7941X_RTCC_TCR_SECONDS] & 0x7f);
t->tm_min = BCD2DEC(reg[MCP7941X_RTCC_TCR_MINUTES] & 0x7f);
t->tm_hour = BCD2DEC(reg[MCP7941X_RTCC_TCR_HOURS] & 0x3f);
t->tm_wday = BCD2DEC(reg[MCP7941X_RTCC_TCR_DAY] & 0x07);
t->tm_mday = BCD2DEC(reg[MCP7941X_RTCC_TCR_DATE] & 0x3f);
t->tm_mon = BCD2DEC(reg[MCP7941X_RTCC_TCR_MONTH] & 0x1f);
t->tm_year = BCD2DEC(reg[MCP7941X_RTCC_TCR_YEAR]);
}
//uint8_t bcm2835_i2c_write(const char * buf, uint32_t len);
/// Call bcm2835_i2c_write with 2 parameters
/// \par Refer
/// - bi_send_buff
/// - buf *(uint32_t **)(buff+1)
/// - len *(uint32_t *)(buff+5)
/// \par Modify
void ope_i2c_write(void)
{
uint8_t ret;
uint8_t *buf;
uint32_t len;
get_int_code();
buf = *(uint32_t **)(buff+1);
get_int_code();
len = *(uint32_t *)(buff+5);
ret = bcm2835_i2c_write( bi_send_buff, *((uint32_t *)(buff+5)) );
set_ope_code( OPE_I2C_WRITE );
set_byte_code( ret );
put_reply();
mark_sync();
}
IMU::IMU(void)
{
char buf[1];
bcm2835_init();
bcm2835_i2c_begin();
bcm2835_i2c_setSlaveAddress(MPU6050_ADDRESS);
WriteRegister(SMPRT_DIV,0x07); // Set the sample rate to 1000Hz - 8kHz/(7+1) = 1000Hz
WriteRegister(CONFIG,0x00); // Disable FSYNC and set 260 Hz Acc filtering, 256 Hz Gyro filtering, 8 KHz sampling
WriteRegister(GYRO_CONFIG,0x00); //250dpi
WriteRegister(ACCEL_CONFIG,0x00); //2g resolution
WriteRegister(PWR_MGMT_1,0x00); //sleep mode disabled
regaddr[0]=WHO_AM_I;
bcm2835_i2c_write(regaddr, 1);
bcm2835_i2c_read(buf, 1);
if(buf[0]==0x88)
{
printf("sensor config was successful WHO_AM_I: %x\n",buf[0]);
}
else
{
printf("sensor config was unsuccessful, %x\n",buf[0]);
}
bcm2835_i2c_end();
///////////SETUP VARIABLES
ReadGyr();
ReadAccel();
#ifdef RESTRICT_PITCH // Eq. 25 and 26
KFData.roll = atan2(AData.y, AData.z) * RAD_TO_DEG;
KFData.pitch = atan(-AData.x / sqrt(AData.y * AData.y + AData.z * AData.z)) * RAD_TO_DEG;
#else // Eq. 28 and 29
KFData.roll = atan(AData.y / sqrt(AData.x * AData.x + AData.z * AData.z)) * RAD_TO_DEG;
KFData.pitch = atan2(-AData.x, AData.z) * RAD_TO_DEG;
#endif
kalmanX.setAngle(KFData.roll); // Set starting angle
kalmanY.setAngle(KFData.pitch);
}
/**
* @ingroup I2C-RTC
*
* @param slave_address
* @return
*/
uint8_t mcp7941x_start (const uint8_t slave_address) {
#if !defined(BARE_METAL) && !defined(__AVR_ARCH__)
if (bcm2835_init() != 1)
return MCP7941X_ERROR;
#endif
FUNC_PREFIX(i2c_begin());
if (slave_address <= 0)
i2c_mcp7941x_slave_address = MCP7941X_DEFAULT_SLAVE_ADDRESS;
else
i2c_mcp7941x_slave_address = slave_address;
mcp7941x_setup();
if (bcm2835_i2c_write(NULL, 0) == 0)
return MCP7941X_OK;
return MCP7941X_ERROR;
}
/*
* Function: i2c_test
* Description: be used to test I2C related functions by using the PCF8574 module
*/
void i2c_test(void)
{
uint8_t i2cWBuf[10] = {0x00};
uint8_t i2cRBuf[10] = {0X00};
printf("--------------->Test I2C With Pcf8574<--------------\n");
i2cWBuf[0] = 0x40;
bcm2835_i2c_begin();
bcm2835_i2c_setSlaveAddress(PCF8574_ADDR); //set the slave address
bcm2835_i2c_set_baudrate(400000); //set the speed of the SDA 400kb/s
bcm2835_i2c_write(i2cWBuf,1);
bcm2835_i2c_read(i2cRBuf, 1);
if(i2cWBuf[0] == i2cRBuf[0])
printf("I2C interface work well !...\n");
else
printf("I2C interface work bad!...\n");
bcm2835_i2c_end();
printf("==============Test Over Of I2C=================\n");
}
/**
*@brief Writes a byte value to the I2C bus. This assumes the register pointer is preset.
*@param bdata Send single byte to I2C bus
*@return none
*/
void I2C_WriteByte(unsigned char address,char bdata)
{
bcm2835_i2c_setSlaveAddress(address);
char data = bdata;
bcm2835_i2c_write(&data, 1);
}
inline void ArduiPi_OLED::fastI2Cwrite(char* tbuf, uint32_t len) {
bcm2835_i2c_write(tbuf, len);
}
/**
*@brief Writes a byte value to the I2C bus. This assumes the register pointer is preset.
*@param bdata Send single byte to I2C bus
*@return none
*/
void I2C_WriteByte(char bdata)
{ char data = bdata;
bcm2835_i2c_write(&data, 1);
}
int MAG3110_WRITE_REGISTER(char reg, char val) {
char x = reg;
char c = val;
bcm2835_i2c_setSlaveAddress(14);
bcm2835_i2c_write(&x, 2);
}
