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Merge pull request #25 from shtirlic/i2creadfirst

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Fix i2c slave scl freeze if read address first recieved
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GNU 2025-04-19 08:42:22 -07:00 committed by GitHub
commit 6b8553e04c
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1 changed files with 8 additions and 2 deletions
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10
Code/picocalc_keyboard/picocalc_keyboard.ino
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@ -36,7 +36,7 @@ void set_pmu_flag(void) { pmu_flag = true; }
HardwareSerial Serial1(PA10, PA9); HardwareSerial Serial1(PA10, PA9);
uint8_t write_buffer[10]; uint8_t write_buffer[10] = {0};
uint8_t write_buffer_len = 0; uint8_t write_buffer_len = 0;
uint8_t io_matrix[9];//for IO matrix,last bytye is the restore key(c64 only) uint8_t io_matrix[9];//for IO matrix,last bytye is the restore key(c64 only)
@ -180,7 +180,13 @@ void receiveEvent(int howMany) {
} }
//-this is after receiveEvent------------------------------- //-this is after receiveEvent-------------------------------
void requestEvent() { Wire.write(write_buffer,write_buffer_len ); } void requestEvent() {
if (write_buffer_len > 0 && write_buffer_len <= sizeof(write_buffer)) {
Wire.write(write_buffer,write_buffer_len );
} else {
Wire.write((uint8_t)0); // Send something minimal to avoid stalling
}
}
void report_bat(){ void report_bat(){
if (PMU.isBatteryConnect()) { if (PMU.isBatteryConnect()) {