2EEEB/ BCL_CO2_module_arduino
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added supercap charge delay

This commit is contained in:
2EEEB 2020-03-15 15:14:06 +01:00
parent d7d0ea1a93
commit 3ff1af2c04
2 changed files with 35 additions and 7 deletions
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39
bc_co2_module_arduino.cpp
View File

@ -14,12 +14,21 @@
#define RX_CONC (3 + 0x9a - 0x80)
static struct lp8_t sensor;
unsigned long delay_started = 0;
bool delay_running = false;
bool init_module() {
Serial1.begin(9600, SERIAL_8N2); //init Serial comm to lp8 sensor
//init comms
Serial1.begin(9600, SERIAL_8N2); //init Serial comm to lp8 sensor, 8data bits 2 stop bits, no parity
Wire.begin(); //init arduino i2c
sensor.first_measurement_done = false;
reset_module();
return(true);
}
bool reset_module() {
sensor.first_measurement_done = false; //no state writeback
sensor.calibration_run = false;
sensor.pressure = 10124;
@ -29,6 +38,11 @@ bool init_module() {
//set proper pins as outputs
tca_set_port(0xee);
//charge the cap
tca_set_port(0xe8);
//non blocking 15second delay to charge the cap
delay_started = millis();
delay_running = true;
sensor.state = LP8_STATE_INITIALIZE;
return(true);
@ -45,7 +59,7 @@ static void measure(){
{
//DIAG
Serial.println(sensor.state);
init_module();
reset_module();
goto start;
}
case LP8_STATE_READY:
@ -63,8 +77,18 @@ static void measure(){
{
//DIAG
Serial.println(sensor.state);
sensor.state = LP8_STATE_PRECHARGE;
//wait 15s to ensure cap is sufficiently charged
if(delay_running && ((millis() - delay_started) >= 15000)) {
delay_running = false;
sensor.state = LP8_STATE_PRECHARGE;
}
else if(!delay_running) {
sensor.state = LP8_STATE_PRECHARGE;
}
else {
return;
}
goto start;
}
case LP8_STATE_PRECHARGE:
@ -278,8 +302,11 @@ static void measure(){
}
int16_t get_concentration() {
int16_t get_concentration(uint16_t pressure = 10124) {
sensor.pressure = pressure;
measure();
if(sensor.valid){
return(sensor.concentration);
}

3
bc_co2_module_arduino.h
View File

@ -51,8 +51,9 @@ struct lp8_t {
};
bool init_module();
bool reset_module();
uint8_t get_ready_state();
uint16_t calculate_crc16(uint8_t *buffer, uint8_t length);
bool tca_set_port(uint8_t port);
bool tca_set_direction(uint8_t dir);
int16_t get_concentration();
int16_t get_concentration(uint16_t pressure = 10124);