![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
I2C not yet integrated
Tested working with single and differential voltages.
Connect SCL (pin 11) to D15 Connect SDA (pin 10) to D14 Connect pin 16 to +5v Connect pin 9 to gnd
main.cpp
- Committer:
- lrdawg99
- Date:
- 2016-12-08
- Revision:
- 3:34e56211d5b6
- Parent:
- 2:c9e727dcd00e
- Child:
- 4:85017622b676
File content as of revision 3:34e56211d5b6:
#include "mbed.h" #include "LTC2991.h" #include <stdarg.h> int8_t ack; // 0 == ack, 1 == no ack const uint16_t LTC2991_TIMEOUT=1000; //!< Configures the maximum timeout allowed for an LTC2991 read. Serial pc(USBTX, USBRX, 9600); //These pins for the nucleo nucleo f401re LTC2991 *ltc0 = new LTC2991(I2C_SDA, I2C_SCL); LTC2991 *ltc1 = new LTC2991(PB_3, PB_10); LTC2991 *ltc2 = new LTC2991(PB_4, PA_8); //void setup(); int main(); void readSingle(); void readDiff(); void setup() { //init lib ack = 0; while (true) { pc.printf("boot\n"); ack |= ltc0->LTC2991_register_write(LTC2991_I2C_ADDRESS, LTC2991_CHANNEL_ENABLE_REG, LTC2991_ENABLE_ALL_CHANNELS); //! Enables all channels ack |= ltc0->LTC2991_register_write(LTC2991_I2C_ADDRESS, LTC2991_CONTROL_V1234_REG, 0x00); //! Sets registers to default starting values. ack |= ltc0->LTC2991_register_write(LTC2991_I2C_ADDRESS, LTC2991_CONTROL_V5678_REG, 0x00); ack |= ltc0->LTC2991_register_write(LTC2991_I2C_ADDRESS, LTC2991_CONTROL_PWM_Tinternal_REG, LTC2991_REPEAT_MODE); //! Configures LTC2991 for Repeated Acquisition mode if (ack != 0) { pc.printf("Error: No Acknowledge. Check I2C Address.\n"); wait_ms(500); } else { break; } } } int main() { setup(); while(1) { readDiff(); readSingle(); wait_ms(750); } } void readSingle() { int8_t data_valid; int16_t code; float voltage; ack = 0; ack |= ltc0->LTC2991_register_set_clear_bits(LTC2991_I2C_ADDRESS, LTC2991_CONTROL_V1234_REG, 0x00, LTC2991_V1_V2_DIFFERENTIAL_ENABLE | LTC2991_V1_V2_TEMP_ENABLE); ack |= ltc0->LTC2991_adc_read_new_data(LTC2991_I2C_ADDRESS, LTC2991_V1_MSB_REG, &code, &data_valid, LTC2991_TIMEOUT); voltage = ltc0->LTC2991_code_to_single_ended_voltage(code, LTC2991_SINGLE_ENDED_lsb); if (ack != 0) { pc.printf("Error: No Acknowledge.\n"); } else { pc.printf("V1: %4.2f V\n", voltage); } } void readDiff() { int8_t data_valid; int16_t code; float voltage; ack = 0; ack |= ltc0->LTC2991_register_set_clear_bits(LTC2991_I2C_ADDRESS, LTC2991_CONTROL_V1234_REG, LTC2991_V1_V2_DIFFERENTIAL_ENABLE, LTC2991_V1_V2_TEMP_ENABLE); ack |= ltc0->LTC2991_adc_read_new_data(LTC2991_I2C_ADDRESS, LTC2991_V2_MSB_REG, &code, &data_valid, LTC2991_TIMEOUT); voltage = ltc0->LTC2991_code_to_differential_voltage(code, LTC2991_DIFFERENTIAL_lsb); if (ack != 0) { pc.printf("Error: No Acknowledge.\n"); } else { pc.printf("V1-V2: %4.2f V\n", voltage, ack); } }