pert:
Oops, I was looking at the wrong error message in my troubleshooting guide "target doesn't answer. 0" is the indicator for the driver issue. "target doesn't answer: 1" indicates a different problem.
Here is my answer for this error message:
Unfortunately, you already said you have the connections right and if you're using an unmodified Pro Mini then the clock should either be running at 8 MHz or 16 MHz, which wouldn't require the slow clock jumper.
What is your reason for programming this Pro Mini with the USBasp?
Thanks for getting back so fast, pert. I'm trying to build an FM radio, which will have an LCD display for tracking which channel the user is on, as well as volume. The Pro Mini will use the input from a rotary encoder, a PAM8403 amplifier, and a TEA5767 to those ends. I'll paste the sketch I'm using:
#include <SPI.h>
#include <Wire.h>
#include <LiquidCrystal.h>
#define clk 2
#define dt 3
#define sw 4
#define cs A0
LiquidCrystal lcd(5,6,7,8,9,10);
double frequency;
unsigned char frequencyH = 0;
unsigned char frequencyL = 0;
unsigned int frequencyB;
int Vol;
boolean mode;
volatile boolean TurnDetected;
volatile boolean up;
byte customChar[8] = { //creates the arrow
0b10000,
0b11000,
0b11100,
0b11110,
0b11110,
0b11100,
0b11000,
0b10000
};
void isr0 () {
TurnDetected = true;
up = (digitalRead(clk) == digitalRead(dt));
}
void setFrequency() {
frequencyB = 4 * (frequency * 1000000 + 225000) / 32768;
frequencyH = frequencyB >> 8;
frequencyL = frequencyB & 0XFF;
Wire.beginTransmission(0x60);
Wire.write(frequencyH);
Wire.write(frequencyL);
Wire.write(0xB0);
Wire.write(0x10);
Wire.write((byte)0x00);
Wire.endTransmission();
}
void setVolume() {
digitalWrite(cs, LOW);
SPI.transfer(0);
SPI.transfer(Vol);
digitalWrite(cs, HIGH);
}
void displaydata(){
lcd.setCursor(1,0);
lcd.print("FM:");
lcd.print(frequency);
lcd.setCursor(1,1);
lcd.print("Vol:");
lcd.print(100-Vol*100/255);
lcd.print("%");
}
void arrow(){
lcd.begin(16, 2);
if (mode == 1){
lcd.setCursor(0,0);
lcd.write((uint8_t)0);}
else{
lcd.setCursor(0,1);
lcd.write((uint8_t)0);}
}
void setup() {
SPI.begin();
Wire.begin();
lcd.begin(16, 2);
pinMode(cs,OUTPUT);
pinMode(clk,INPUT);
pinMode(dt,INPUT);
pinMode(sw,INPUT);
mode = 1; //frequency mode
lcd.createChar(0, customChar); // arrow Char created
frequency = 99.8; //starting Frequency
Vol = 220; //starting Volume
setFrequency();
setVolume();
arrow();
displaydata();
attachInterrupt (0,isr0,FALLING);
}
void loop() {
if (!(digitalRead(sw))){
mode=!mode;
arrow();
displaydata();
delay(500);}
if (TurnDetected && mode == 1){
if(up){
if (frequency >= 107.90){
setFrequency();
arrow();
displaydata();}
else{
frequency = frequency + 0.1;
setFrequency();
arrow();
displaydata();}}
else{
if (frequency <= 87.6){
setFrequency();
arrow();
displaydata();}
else{
frequency = frequency - 0.1;
setFrequency();
arrow();
displaydata();}}
TurnDetected = false;
}
if (TurnDetected && mode == 0){
if(up){
Vol = Vol - 10;
if (Vol <= 0){
Vol = 0;
setVolume();
arrow();
displaydata();}
else{
setVolume();
arrow();
displaydata();}}
else{
Vol = Vol + 10;
if (Vol >= 255){
Vol = 255;
setVolume();
arrow();
displaydata();}
else{
setVolume();
arrow();
displaydata();}}
TurnDetected = false;
}
}
As to why particularly I'm using a USBasp to program, I don't have my own serial-ttl converter, so I've borrowed this one from a friend. I should explicate, the connections are correct according to this website: https://www.instructables.com/id/Uploading-Sketch-to-Arduino-Pro-Mini-using-usbASP/#:~:text=%20Uploading%20Sketch%20to%20Arduino%20Pro%20Mini%20Using,we%20are%20ready%20to%20upload%20your...%20More%20
