C++ (Cpp) i2c_write_block_data Beispiele

Beispiel #1

Datei: LTC2992.cpp Projekt: mthoren-adi/Linduino

// Write a 24-bit code to the LTC2992.
int8_t LTC2992_write_24_bits(uint8_t i2c_address, uint8_t adc_command, uint32_t code)
// The function returns the state of the acknowledge bit after the I2C address write. 0=acknowledge, 1=no acknowledge.
{
  int8_t ack;

  LT_union_int32_4bytes data;
  data.LT_int32 = code;

  ack = i2c_write_block_data(i2c_address, adc_command, (uint8_t) 3, data.LT_byte);

  return(ack);
}

Beispiel #2

Datei: star_compass.c Projekt: ahadjaman/lge-kernel-startablet-ICS

int ami304_i2c_write(u8 RegAddr, u8 *RegValue, u8 len) {
	int Ret;
	struct i2c_client *client = g_ami304_data->client;

	if (client == NULL) {
		printk("%s - no client initialized\n", __FUNCTION__);
		return -1;
	}

	Ret = i2c_write_block_data(client, DEVICE_I2C_ADDRESS_SIZE_1BYTE, len, RegAddr, RegValue);

	if (Ret < 0) {
		printk("%s - failed \n", __FUNCTION__);
		return -1;
	}

	return 0;
}

Beispiel #3

Datei: x_pigpiod_if2.c Projekt: SlySven/pigpio

void tb(int pi)
{
   int h, e, b, len;
   char *exp;
   char buf[128];

   printf("SMBus / I2C tests.");

   /* this test requires an ADXL345 on I2C bus 1 addr 0x53 */

   h = i2c_open(pi, 1, 0x53, 0);
   CHECK(11, 1, h, 0, 0, "i2c open");

   e = i2c_write_device(pi, h, "\x00", 1); /* move to known register */
   CHECK(11, 2, e, 0, 0, "i2c write device");

   b = i2c_read_device(pi, h, buf, 1);
   CHECK(11, 3, b, 1, 0, "i2c read device");
   CHECK(11, 4, buf[0], 0xE5, 0, "i2c read device");

   b = i2c_read_byte(pi, h);
   CHECK(11, 5, b, 0xE5, 0, "i2c read byte");

   b = i2c_read_byte_data(pi, h, 0);
   CHECK(11, 6, b, 0xE5, 0, "i2c read byte data");

   b = i2c_read_byte_data(pi, h, 48);
   CHECK(11, 7, b, 2, 0, "i2c read byte data");

   exp = "\x1D[aBcDeFgHjKM]";
   len = strlen(exp);

   e = i2c_write_device(pi, h, exp, len);
   CHECK(11, 8, e, 0, 0, "i2c write device");

   e = i2c_write_device(pi, h, "\x1D", 1);
   b = i2c_read_device(pi, h, buf, len-1);
   CHECK(11, 9, b, len-1, 0, "i2c read device");
   CHECK(11, 10, strncmp(buf, exp+1, len-1), 0, 0, "i2c read device");

   if (strncmp(buf, exp+1, len-1))
      printf("got [%.*s] expected [%.*s]\n", len-1, buf, len-1, exp+1);

   e = i2c_write_byte_data(pi, h, 0x1d, 0xAA);
   CHECK(11, 11, e, 0, 0, "i2c write byte data");

   b = i2c_read_byte_data(pi, h, 0x1d);
   CHECK(11, 12, b, 0xAA, 0, "i2c read byte data");

   e = i2c_write_byte_data(pi, h, 0x1d, 0x55);
   CHECK(11, 13, e, 0, 0, "i2c write byte data");

   b = i2c_read_byte_data(pi, h, 0x1d);
   CHECK(11, 14, b, 0x55, 0, "i2c read byte data");

   exp = "[1234567890#]";
   len = strlen(exp);

   e = i2c_write_block_data(pi, h, 0x1C, exp, len);
   CHECK(11, 15, e, 0, 0, "i2c write block data");

   e = i2c_write_device(pi, h, "\x1D", 1);
   b = i2c_read_device(pi, h, buf, len);
   CHECK(11, 16, b, len, 0, "i2c read device");
   CHECK(11, 17, strncmp(buf, exp, len), 0, 0, "i2c read device");

   if (strncmp(buf, exp, len))
      printf("got [%.*s] expected [%.*s]\n", len, buf, len, exp);

   b = i2c_read_i2c_block_data(pi, h, 0x1D, buf, len);
   CHECK(11, 18, b, len, 0, "i2c read i2c block data");
   CHECK(11, 19, strncmp(buf, exp, len), 0, 0, "i2c read i2c block data");

   if (strncmp(buf, exp, len))
      printf("got [%.*s] expected [%.*s]\n", len, buf, len, exp);

   exp = "(-+=;:,<>!%)";
   len = strlen(exp);

   e = i2c_write_i2c_block_data(pi, h, 0x1D, exp, len);
   CHECK(11, 20, e, 0, 0, "i2c write i2c block data");

   b = i2c_read_i2c_block_data(pi, h, 0x1D, buf, len);
   CHECK(11, 21, b, len, 0, "i2c read i2c block data");
   CHECK(11, 22, strncmp(buf, exp, len), 0, 0, "i2c read i2c block data");

   if (strncmp(buf, exp, len))
      printf("got [%.*s] expected [%.*s]\n", len, buf, len, exp);

   e = i2c_close(pi, h);
   CHECK(11, 23, e, 0, 0, "i2c close");
}