mirror of
https://github.com/sanni/cartreader.git
synced 2024-11-27 15:04:15 +01:00
V5.7: Add Clockgen option to N64 Eeprom
Uncomment #define clockgen_installed in options.h and switch CLK1 switch to ON position. With Adafruit clockgen the eeprom now runs at the correct 2Mhz.
This commit is contained in:
sanni
parent
f5ceacf35c
commit
72fa1ea8b4
@ -1,8 +1,8 @@
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/**********************************************************************************
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Cartridge Reader for Arduino Mega2560
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Date: 31.01.2021
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Version: 5.6
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Date: 15.04.2021
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Version: 5.7
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SD lib: https://github.com/greiman/SdFat
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LCD lib: https://github.com/adafruit/Adafruit_SSD1306
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@ -43,7 +43,7 @@
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**********************************************************************************/
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#include <SdFat.h>
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char ver[5] = "5.6";
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char ver[5] = "5.7";
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#include "options.h"
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@ -1201,10 +1201,12 @@ void wait_btn() {
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int b = checkButton();
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#ifdef enable_N64
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#ifndef clockgen_installed
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// Send some clock pulses to the Eeprom in case it locked up
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if ((mode == mode_N64_Cart) && ((saveType == 5) || (saveType == 6))) {
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pulseClock_N64(1);
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}
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#endif
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#endif
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// if the cart readers input button is pressed shortly
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@ -4,6 +4,7 @@
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#include "options.h"
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#ifdef enable_N64
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#include "snes_clk.h"
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/******************************************
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Defines
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@ -233,7 +234,11 @@ void n64CartMenu() {
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else if ((saveType == 5) || (saveType == 6)) {
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println_Msg(F("Reading Eep..."));
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display_Update();
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#ifdef clockgen_installed
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readEeprom();
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#else
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readEeprom_CLK();
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#endif
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}
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else {
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print_Error(F("Savetype Error"), false);
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@ -291,8 +296,14 @@ void n64CartMenu() {
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fileBrowser(F("Select eep file"));
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display_Clear();
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#ifdef clockgen_installed
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writeEeprom();
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writeErrors = verifyEeprom();
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#else
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writeEeprom_CLK();
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writeErrors = verifyEeprom_CLK();
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#endif
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if (writeErrors == 0) {
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println_Msg(F("Eeprom verified OK"));
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display_Update();
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@ -388,10 +399,28 @@ void setup_N64_Cart() {
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PORTC &= ~(1 << 0);
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PORTC |= (1 << 1);
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#ifdef clockgen_installed
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// Adafruit Clock Generator
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// last number is the clock correction factor which is custom for each clock generator
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int32_t clock_offset = readClockOffset();
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if (clock_offset > INT32_MIN) {
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clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, clock_offset);
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} else {
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clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, 0);
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}
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// Set Eeprom clock to 2Mhz
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clockgen.set_freq(200000000ULL, SI5351_CLK1);
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// Start outputting Eeprom clock
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clockgen.output_enable(SI5351_CLK1, 1); // Eeprom clock
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#else
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// Set Eeprom Clock Pin(PH1) to Output
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DDRH |= (1 << 1);
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// Output a high signal
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PORTH |= (1 << 1);
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#endif
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// Set Eeprom Data Pin(PH4) to Input
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DDRH &= ~(1 << 4);
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@ -401,6 +430,11 @@ void setup_N64_Cart() {
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// Set sram base address
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sramBase = 0x08000000;
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#ifdef clockgen_installed
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// Wait for clock generator
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clockgen.update_status();
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#endif
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// Wait until all is stable
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delay(300);
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@ -1805,7 +1839,7 @@ void idCart() {
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}
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/******************************************
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Eeprom functions
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Eeprom functions (without Adafruit clockgen)
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*****************************************/
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// Send a clock pulse of 2us length, 50% duty, 500kHz
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void pulseClock_N64(unsigned int times) {
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@ -1818,7 +1852,7 @@ void pulseClock_N64(unsigned int times) {
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}
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// Send one byte of data to eeprom
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void sendData(byte data) {
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void sendData_CLK(byte data) {
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for (byte i = 0; i < 8; i++) {
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// pull data line low
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N64_LOW;
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@ -1842,7 +1876,7 @@ void sendData(byte data) {
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}
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// Send stop bit to eeprom
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void sendStop() {
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void sendStop_CLK() {
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N64_LOW;
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pulseClock_N64(2);
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N64_HIGH;
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@ -1850,7 +1884,7 @@ void sendStop() {
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}
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// Capture 8 bytes in 64 bits into bit array tempBits
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void readData() {
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void readData_CLK() {
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for (byte i = 0; i < 64; i++) {
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// pulse clock until we get response from eeprom
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@ -1871,6 +1905,253 @@ void readData() {
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}
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}
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// Write Eeprom to cartridge
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void writeEeprom_CLK() {
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if ((saveType == 5) || (saveType == 6)) {
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// Create filepath
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sprintf(filePath, "%s/%s", filePath, fileName);
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println_Msg(F("Writing..."));
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println_Msg(filePath);
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display_Update();
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// Open file on sd card
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if (myFile.open(filePath, O_READ)) {
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for (byte i = 0; i < (eepPages / 64); i++) {
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myFile.read(sdBuffer, 512);
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// Disable interrupts for more uniform clock pulses
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noInterrupts();
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for (byte pageNumber = 0; pageNumber < 64; pageNumber++) {
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// Blink led
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PORTB ^= (1 << 4);
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// Wait ~50ms between page writes or eeprom will have write errors
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pulseClock_N64(26000);
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// Send write command
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sendData_CLK(0x05);
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// Send page number
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sendData_CLK(pageNumber + (i * 64));
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// Send data to write
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for (byte j = 0; j < 8; j++) {
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sendData_CLK(sdBuffer[(pageNumber * 8) + j]);
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}
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sendStop_CLK();
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}
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interrupts();
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}
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// Close the file:
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myFile.close();
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println_Msg(F("Done"));
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display_Update();
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delay(600);
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}
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else {
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print_Error(F("SD Error"), true);
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}
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}
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else {
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print_Error(F("Savetype Error"), true);
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}
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}
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// Dump Eeprom to SD
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void readEeprom_CLK() {
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if ((saveType == 5) || (saveType == 6)) {
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// Wait 50ms or eeprom might lock up
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pulseClock_N64(26000);
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// Get name, add extension and convert to char array for sd lib
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strcpy(fileName, romName);
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strcat(fileName, ".eep");
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// create a new folder for the save file
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EEPROM_readAnything(0, foldern);
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sprintf(folder, "N64/SAVE/%s/%d", romName, foldern);
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sd.mkdir(folder, true);
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sd.chdir(folder);
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// write new folder number back to eeprom
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foldern = foldern + 1;
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EEPROM_writeAnything(0, foldern);
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// Open file on sd card
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if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
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print_Error(F("Can't create file on SD"), true);
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}
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for (byte i = 0; i < (eepPages / 64); i++) {
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// Disable interrupts for more uniform clock pulses
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noInterrupts();
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for (byte pageNumber = 0; pageNumber < 64; pageNumber++) {
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// Blink led
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PORTB ^= (1 << 4);
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// Send read command
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sendData_CLK(0x04);
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// Send Page number
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sendData_CLK(pageNumber + (i * 64));
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// Send stop bit
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sendStop_CLK();
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// read data
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readData_CLK();
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sendStop_CLK();
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// OR 8 bits into one byte for a total of 8 bytes
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for (byte j = 0; j < 64; j += 8) {
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sdBuffer[(pageNumber * 8) + (j / 8)] = tempBits[0 + j] << 7 | tempBits[1 + j] << 6 | tempBits[2 + j] << 5 | tempBits[3 + j] << 4 | tempBits[4 + j] << 3 | tempBits[5 + j] << 2 | tempBits[6 + j] << 1 | tempBits[7 + j];
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}
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// Wait 50ms between pages or eeprom might lock up
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pulseClock_N64(26000);
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}
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interrupts();
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// Write 64 pages at once to the SD card
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myFile.write(sdBuffer, 512);
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}
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// Close the file:
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myFile.close();
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//clear the screen
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display_Clear();
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print_Msg(F("Saved to "));
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print_Msg(folder);
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println_Msg(F("/"));
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display_Update();
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}
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else {
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print_Error(F("Savetype Error"), true);
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}
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}
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// Check if a write succeeded, returns 0 if all is ok and number of errors if not
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unsigned long verifyEeprom_CLK() {
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if ((saveType == 5) || (saveType == 6)) {
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writeErrors = 0;
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// Wait 50ms or eeprom might lock up
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pulseClock_N64(26000);
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display_Clear();
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print_Msg(F("Verifying against "));
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println_Msg(filePath);
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display_Update();
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// Open file on sd card
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if (myFile.open(filePath, O_READ)) {
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for (byte i = 0; i < (eepPages / 64); i++) {
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// Disable interrupts for more uniform clock pulses
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noInterrupts();
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for (byte pageNumber = 0; pageNumber < 64; pageNumber++) {
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// Blink led
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PORTB ^= (1 << 4);
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// Send read command
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sendData_CLK(0x04);
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// Send Page number
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sendData_CLK(pageNumber + (i * 64));
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// Send stop bit
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sendStop_CLK();
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// read data
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readData_CLK();
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sendStop_CLK();
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// OR 8 bits into one byte for a total of 8 bytes
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for (byte j = 0; j < 64; j += 8) {
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sdBuffer[(pageNumber * 8) + (j / 8)] = tempBits[0 + j] << 7 | tempBits[1 + j] << 6 | tempBits[2 + j] << 5 | tempBits[3 + j] << 4 | tempBits[4 + j] << 3 | tempBits[5 + j] << 2 | tempBits[6 + j] << 1 | tempBits[7 + j];
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}
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// Wait 50ms between pages or eeprom might lock up
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pulseClock_N64(26000);
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}
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interrupts();
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// Check sdBuffer content against file on sd card
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for (int c = 0; c < 512; c++) {
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if (myFile.read() != sdBuffer[c]) {
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writeErrors++;
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}
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}
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}
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// Close the file:
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myFile.close();
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}
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else {
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// SD Error
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writeErrors = 999999;
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print_Error(F("SD Error"), true);
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}
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// Return 0 if verified ok, or number of errors
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return writeErrors;
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}
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else {
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print_Error(F("Savetype Error"), true);
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}
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}
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/******************************************
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Eeprom functions (with Adafruit clockgen)
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*****************************************/
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// Send one byte of data to eeprom
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void sendData(byte data) {
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for (byte i = 0; i < 8; i++) {
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// pull data line low
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N64_LOW;
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// if current bit is 1, pull high after ~1us
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if (data >> 7) {
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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N64_HIGH;
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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}
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// if current bit is 0 pull high after ~3us
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else {
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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N64_HIGH;
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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}
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// rotate to the next bit
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data <<= 1;
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}
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}
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// Send stop bit to eeprom
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void sendStop() {
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N64_LOW;
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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N64_HIGH;
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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}
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// Capture 8 bytes in 64 bits into bit array tempBits
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void readData() {
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for (byte i = 0; i < 64; i++) {
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// wait until we get response from eeprom
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while (N64_QUERY) {
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}
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// Skip over the 1us low part of a high bit, Arduino running at 16Mhz -> one nop = 62.5ns
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__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
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// Read bit
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tempBits[i] = N64_QUERY;
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// wait for line to go high again
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while (!N64_QUERY) {
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__asm__("nop\n\t");
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}
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}
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}
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// Write Eeprom to cartridge
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void writeEeprom() {
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if ((saveType == 5) || (saveType == 6)) {
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@ -1893,8 +2174,10 @@ void writeEeprom() {
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// Blink led
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PORTB ^= (1 << 4);
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// Wait ~50ms between page writes or eeprom will have write errors
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pulseClock_N64(26000);
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// Wait ~50ms between page writes or eeprom will have write errors, Arduino running at 16Mhz -> one nop = 62.5ns
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for (long i = 0; i < 115000; i++) {
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__asm__("nop\n\t");
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}
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// Send write command
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sendData(0x05);
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@ -1927,10 +2210,6 @@ void writeEeprom() {
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// Dump Eeprom to SD
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void readEeprom() {
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if ((saveType == 5) || (saveType == 6)) {
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// Wait 50ms or eeprom might lock up
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pulseClock_N64(26000);
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// Get name, add extension and convert to char array for sd lib
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strcpy(fileName, romName);
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strcat(fileName, ".eep");
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@ -1973,8 +2252,10 @@ void readEeprom() {
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for (byte j = 0; j < 64; j += 8) {
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sdBuffer[(pageNumber * 8) + (j / 8)] = tempBits[0 + j] << 7 | tempBits[1 + j] << 6 | tempBits[2 + j] << 5 | tempBits[3 + j] << 4 | tempBits[4 + j] << 3 | tempBits[5 + j] << 2 | tempBits[6 + j] << 1 | tempBits[7 + j];
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}
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// Wait 50ms between pages or eeprom might lock up
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pulseClock_N64(26000);
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// Wait ~600us between pages
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for (int i = 0; i < 2000; i++) {
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__asm__("nop\n\t");
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}
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}
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interrupts();
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@ -2000,9 +2281,6 @@ unsigned long verifyEeprom() {
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if ((saveType == 5) || (saveType == 6)) {
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writeErrors = 0;
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// Wait 50ms or eeprom might lock up
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pulseClock_N64(26000);
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display_Clear();
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print_Msg(F("Verifying against "));
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println_Msg(filePath);
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@ -2034,8 +2312,10 @@ unsigned long verifyEeprom() {
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for (byte j = 0; j < 64; j += 8) {
|
||||
sdBuffer[(pageNumber * 8) + (j / 8)] = tempBits[0 + j] << 7 | tempBits[1 + j] << 6 | tempBits[2 + j] << 5 | tempBits[3 + j] << 4 | tempBits[4 + j] << 3 | tempBits[5 + j] << 2 | tempBits[6 + j] << 1 | tempBits[7 + j];
|
||||
}
|
||||
// Wait 50ms between pages or eeprom might lock up
|
||||
pulseClock_N64(26000);
|
||||
// Wait ~600us between pages
|
||||
for (int i = 0; i < 2000; i++) {
|
||||
__asm__("nop\n\t");
|
||||
}
|
||||
}
|
||||
interrupts();
|
||||
|
||||
|
||||
@ -15,6 +15,9 @@
|
||||
// Enable the second button
|
||||
#define enable_Button2
|
||||
|
||||
// Read N64 Eeprom with Adadruit clockgen, CLK1 switch needs to be switch to ON
|
||||
//#define clockgen_installed
|
||||
|
||||
// define enable_XXX to enable
|
||||
#define enable_FLASH
|
||||
#define enable_GBX
|
||||
|
||||
@ -3,44 +3,44 @@
|
||||
#include "atoi32.h"
|
||||
|
||||
int32_t readClockOffset() {
|
||||
File clock_file;
|
||||
unsigned char* clock_buf;
|
||||
int16_t i;
|
||||
int32_t clock_offset;
|
||||
File clock_file;
|
||||
unsigned char* clock_buf;
|
||||
int16_t i;
|
||||
int32_t clock_offset;
|
||||
|
||||
if(!clock_file.open("/snes_clk.txt", FILE_READ)) {
|
||||
return INT32_MIN;
|
||||
}
|
||||
if (!clock_file.open("/snes_clk.txt", FILE_READ)) {
|
||||
return INT32_MIN;
|
||||
}
|
||||
|
||||
clock_buf = malloc(12 * sizeof(char));
|
||||
i = clock_file.read(clock_buf, 11);
|
||||
clock_file.close();
|
||||
if(i == -1) {
|
||||
free(clock_buf);
|
||||
return INT32_MIN;
|
||||
} else if((i == 11) && (clock_buf[0] != '-')) {
|
||||
free(clock_buf);
|
||||
return INT32_MIN;
|
||||
} else {
|
||||
clock_buf[i] = 0;
|
||||
}
|
||||
clock_buf = malloc(12 * sizeof(char));
|
||||
i = clock_file.read(clock_buf, 11);
|
||||
clock_file.close();
|
||||
if (i == -1) {
|
||||
free(clock_buf);
|
||||
return INT32_MIN;
|
||||
} else if ((i == 11) && (clock_buf[0] != '-')) {
|
||||
free(clock_buf);
|
||||
return INT32_MIN;
|
||||
} else {
|
||||
clock_buf[i] = 0;
|
||||
}
|
||||
|
||||
for(i = 0; i < 12; i++) {
|
||||
if(clock_buf[i] != '-' && clock_buf[i] < '0' && clock_buf[i] > '9') {
|
||||
if(i == 0) {
|
||||
free(clock_buf);
|
||||
return INT32_MIN;
|
||||
} else if((i == 1) && (clock_buf[0] == '-')) {
|
||||
free(clock_buf);
|
||||
return INT32_MIN;
|
||||
} else {
|
||||
clock_buf[i] = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
for (i = 0; i < 12; i++) {
|
||||
if (clock_buf[i] != '-' && clock_buf[i] < '0' && clock_buf[i] > '9') {
|
||||
if (i == 0) {
|
||||
free(clock_buf);
|
||||
return INT32_MIN;
|
||||
} else if ((i == 1) && (clock_buf[0] == '-')) {
|
||||
free(clock_buf);
|
||||
return INT32_MIN;
|
||||
} else {
|
||||
clock_buf[i] = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
clock_offset = atoi32_signed(clock_buf);
|
||||
free(clock_buf);
|
||||
clock_offset = atoi32_signed(clock_buf);
|
||||
free(clock_buf);
|
||||
|
||||
return clock_offset;
|
||||
return clock_offset;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user