adafruit-mirror/Adafruit_Learning_System_Guides
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Merge 95e99f2ef6 into d0cb33b6fc

Browse source
This commit is contained in:
Khairulmizam Samsudin 2025-08-19 15:14:36 +08:00 committed by GitHub
commit f9f687bb49
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
1 changed files with 9 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
ArduinoISP/ArduinoISP/ArduinoISP.ino
View file

@ -488,8 +488,10 @@ byte write_eeprom(int length) {
// here is a word address, so we use here*2
// this writes byte-by-byte,
// page writing may be faster (4 bytes at a time)
int start = _addr*2;
for (int x = 0; x < length; x++) {
spi_transaction(0xC0, 0x00, _addr*2+x, buff[x]);
int addr = start + x;
spi_transaction(0xC0, (addr >> 8) & 0xFF, addr & 0xFF, buff[x]);
delay(45);
}
return STK_OK;
@ -497,8 +499,9 @@ byte write_eeprom(int length) {
void program_page() {
byte result = STK_FAILED;
int length = 256 * getch() + getch();
if (length > 256) {
unsigned int length = 256 * getch();
length += getch();
if (length > param.eepromsize) {
Serial.write(STK_FAILED);
error++;
return;
@ -549,8 +552,10 @@ char flash_read_page(int length) {
char eeprom_read_page(int length) {
// here again we have a word address
int start = _addr*2;
for (int x = 0; x < length; x++) {
byte ee = spi_transaction(0xA0, 0x00, _addr*2+x, 0xFF);
int addr = start +x;
byte ee = spi_transaction(0xA0, (addr >> 8) & 0xFF, addr & 0xFF, 0xFF);
Serial.write( ee);
}
return STK_OK;