pinMode(LED_BUILTIN, OUTPUT);
digitalWrite(LED_BUILTIN, HIGH);
digitalRead(LED_BUILTIN )
delay( 1000 );void setup() {
// put your setup code here, to run once:
pinMode(LED_BUILTIN, OUTPUT);
digitalWrite(LED_BUILTIN, HIGH);
digitalRead(LED_BUILTIN );
delay( 1000 );
}
void loop() {
// put your main code here, to run repeatedly:
}
#define SOME_SERIAL Serial
//#define SOME_SERIAL Serial4
void setup() {
// put your setup code here, to run once:
pinMode(LED_BUILTIN, OUTPUT);
while ( !Serial && millis() < 600 ) {
if ( 0 == ARM_DWT_CYCCNT && 0 == ARM_DWT_CYCCNT ) {
digitalWrite(LED_BUILTIN, HIGH);
SOME_SERIAL.println( " ARM_DEMCR_TRCENA done!" );
ARM_DEMCR |= ARM_DEMCR_TRCENA;
// ARM_DWT_CTRL |= ARM_DWT_CTRL_CYCCNTENA; // turn on cycle counter << THIS LINE NOT NEEDED
}
}
SOME_SERIAL.println("\n" __FILE__ " " __DATE__ " " __TIME__);
}
void loop() {
// put your main code here, to run repeatedly:
digitalWrite(LED_BUILTIN, HIGH);
if ( digitalRead(LED_BUILTIN ) ) SOME_SERIAL.print("1+");
else SOME_SERIAL.print("1-");
delay( 1000 );
digitalWrite(LED_BUILTIN, LOW);
if ( !digitalRead(LED_BUILTIN ) ) SOME_SERIAL.print("0+");
else SOME_SERIAL.print("0-");
delay( 1000 );
}
#include <Wire.h>
#include "debug/printf.h"
int led = 13;
void doread(int address) {
printf("doread\n");
int retry=0;
while (1) {
Wire.beginTransmission(0x50); // EEPROM
Wire.write((address >> 8) & 255);
Wire.write(address & 255);
int r = Wire.endTransmission(false);
if (r == 0) break;
printf("error, r=%d\n", r);
if (++retry > 10) return; // fail :(
}
printf("req\n");
Wire.requestFrom(0x50, 4);
printf("Wire read: %x,", Wire.read());
printf(" %x,", Wire.read());
printf(" %x,", Wire.read());
printf(" %x\n", Wire.read());
}
void dowrite(int address) {
printf("dowrite\n");
Wire.beginTransmission(0x50); // EEPROM
Wire.write((address >> 8) & 255);
Wire.write(address & 255);
Wire.write(0x69);
Wire.write(0x1E);
Wire.write(0x34);
Wire.write(0xA5);
Wire.endTransmission();
}
void setup() {
pinMode(led, OUTPUT);
digitalWrite(led, LOW);
Wire.begin();
doread(0);
dowrite(0);
doread(0);
}
void loop() {
elapsedMillis t;
digitalWrite(led, HIGH);
t = 0;
while (t < 2000) ; // wait
//delay(2000);
digitalWrite(led, LOW);
delay(2000);
}Thanks Paul. Before crashing (my sleep) I ran the adafruit lib sketch on using 4.7k with the MB85RC256. Looking at output it looked like it was working writing and reading to the registers. I didn't scope though. Going to test it with 1k and no pullups as well. Then back to the bme280 sensor.
void setup() {
// put your setup code here, to run once:
pinMode(LED_BUILTIN, OUTPUT);
digitalWrite(LED_BUILTIN, LOW);
delay(1000);
digitalWrite(LED_BUILTIN, HIGH);
}
void loop() {
// put your main code here, to run repeatedly:
delay(1000);
digitalWrite(LED_BUILTIN, LOW);
delay(500);
digitalWrite(LED_BUILTIN, HIGH);
Serial.println("loop");
class TestSerial : public Stream {
public:
TestSerial() {state_ = 0;};
virtual int available(void);
virtual int peek(void);
virtual void flush(void);
virtual size_t write(uint8_t c);
virtual int read(void);
using Print::write;
size_t nonVirtualfunc(uint8_t c);
uint8_t state_;
};
int TestSerial::available(void) {return 0;}
int TestSerial::peek(void){return 0;}
void TestSerial::flush(void) {return;}
size_t TestSerial::write(uint8_t c) {
digitalWrite(3, HIGH);
state_ = state_? 0 : 1;
digitalWrite(13, state_);
digitalWrite(3, LOW);
return 0;
}
size_t TestSerial::nonVirtualfunc(uint8_t c) {
digitalWrite(3, HIGH);
state_ = state_? 0 : 1;
digitalWrite(13, state_);
delay(100);
digitalWrite(3, LOW);
return 0;
}
int TestSerial::read(void){return 0;}
TestSerial ts;
void setup() {
// put your setup code here, to run once:
pinMode(13, OUTPUT);
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
for (uint8_t i=0; i< 5; i++) {
digitalWrite(13, HIGH);
delay(250);
digitalWrite(13, LOW);
delay(250);
}
}
uint8_t buf[]={0,1};
void loop() {
digitalWrite(2, HIGH);
//ts.write((uint8_t)0x00); // see if we call through the virtual function
ts.write(buf, 1);
//ts.nonVirtualfunc(0);
digitalWrite(2, LOW);
delay(500);
}