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Update 7800.ino

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Add clock generator usage to fix timing issues (thanks to @smesgr9000)
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PsyK0p4T 2024-02-29 23:17:41 +01:00 committed by GitHub
parent f947fb4e3f
commit 35eca2a9f4
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GPG Key ID: B5690EEEBB952194
1 changed files with 30 additions and 4 deletions
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Cart_Reader/7800.ino
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@ -99,8 +99,8 @@ void setup_7800() {
DDRL = 0xFF;
// Set Control Pins to Output
// ---(PH0) CLK(PH1) ---(PH3) ---(PH4) ---(PH5) R/W(PH6)
DDRH |= (1 << 0) | (1 << 1) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
// ---(PH0) ---(PH3) ---(PH4) ---(PH5) R/W(PH6)
DDRH |= (1 << 0) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
// Set TIME(PJ0) to Output (UNUSED)
DDRJ |= (1 << 0);
@ -109,8 +109,8 @@ void setup_7800() {
DDRC = 0x00;
// Setting Control Pins to HIGH
// ---(PH0) CLK(PH1) ---(PH3) ---(PH4) ---(PH5) R/W(PH6)
PORTH |= (1 << 0) | (1 << 1) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
// ---(PH0) ---(PH3) ---(PH4) ---(PH5) R/W(PH6)
PORTH |= (1 << 0) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
// Set Unused Data Pins (PA0-PA7) to Output
DDRA = 0xFF;
@ -120,6 +120,32 @@ void setup_7800() {
PORTL = 0xFF; // A16-A23
PORTJ |= (1 << 0); // TIME(PJ0)
#ifdef clockgen_installed
// Adafruit Clock Generator
initializeClockOffset();
if (!i2c_found) {
display_Clear();
print_FatalError(F("Clock Generator not found"));
}
// Set Eeprom clock to 1Mhz
clockgen.set_freq(200000000ULL, SI5351_CLK1);
// Start outputting Eeprom clock
clockgen.output_enable(SI5351_CLK1, 1); // Eeprom clock
// Wait for clock generator
clockgen.update_status();
#else
// Set CLK(PH1) to Output
DDRH |= (1 << 1);
// Output a high signal CLK(PH1)
PORTH |= (1 << 1);
#endif
checkStatus_7800();
strcpy(romName, "ATARI");