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author | Brijeshcr | 2017-07-06 15:48:47 +0530 |
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committer | GitHub | 2017-07-06 15:48:47 +0530 |
commit | ea958d3c401761dcc24865d9639b2fab31038db8 (patch) | |
tree | 8cea93113a46d7015d1a10638778f92275a0ca94 /src/c/scilab-arduino/cmd_i2c_read_register | |
parent | cb1d99232e521c34e9f0c271a6c4176cc7b9cbe4 (diff) | |
download | Scilab2C_fossee_old-ea958d3c401761dcc24865d9639b2fab31038db8.tar.gz Scilab2C_fossee_old-ea958d3c401761dcc24865d9639b2fab31038db8.tar.bz2 Scilab2C_fossee_old-ea958d3c401761dcc24865d9639b2fab31038db8.zip |
Revert "LinearAlgebra Function Added"
Diffstat (limited to 'src/c/scilab-arduino/cmd_i2c_read_register')
-rw-r--r-- | src/c/scilab-arduino/cmd_i2c_read_register/u8cmd_i2c_read_registers.cpp | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/c/scilab-arduino/cmd_i2c_read_register/u8cmd_i2c_read_registers.cpp b/src/c/scilab-arduino/cmd_i2c_read_register/u8cmd_i2c_read_registers.cpp new file mode 100644 index 0000000..0a2ec2e --- /dev/null +++ b/src/c/scilab-arduino/cmd_i2c_read_register/u8cmd_i2c_read_registers.cpp @@ -0,0 +1,26 @@ +#include "cmd_i2c_read_register.h" +#include "Arduino.h" +#include "Wire.h" + +uint16 u8cmd_i2c_read_registers(uint8 address, uint8 reg_adrs) +{ + long int reading; + + Wire.beginTransmission(address); // transmit to device address + Wire.write(reg_adrs); // sets register pointer to reg_adrs position + Wire.endTransmission(); // stop transmitting + + // request reading from sensor + Wire.requestFrom(address, 2); // request 2 bytes from slave device with address + + // receive reading from sensor + if (2 <= Wire.available()) // if two bytes were received + { + reading = Wire.read(); // receive high byte (overwrites previous reading) + reading = reading << 8; // shift high byte to be high 8 bits + reading |= Wire.read(); // receive low byte as lower 8 bits + } + + return(reading); + +} |