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Automatically create snes_clk.txt if it doesn't exist
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9996
Cart_Reader/N64.ino
9996
Cart_Reader/N64.ino
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@ -606,16 +606,7 @@ void setup_SFM() {
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//PORTH &= ~(1 << 1);
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// Adafruit Clock Generator
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#ifdef clockgen_calibration
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int32_t clock_offset = readClockOffset();
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if (clock_offset > INT32_MIN) {
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i2c_found = clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, clock_offset);
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} else {
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i2c_found = clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, 0);
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}
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#else
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i2c_found = clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, 0);
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#endif
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initializeClockOffset();
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if (i2c_found) {
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clockgen.set_pll(SI5351_PLL_FIXED, SI5351_PLLA);
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@ -458,17 +458,7 @@ void setup_Snes() {
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//PORTJ &= ~(1 << 0);
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// Adafruit Clock Generator
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#ifdef clockgen_calibration
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int32_t clock_offset = readClockOffset();
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if (clock_offset > INT32_MIN) {
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i2c_found = clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, clock_offset);
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} else {
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i2c_found = clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, 0);
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}
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#else
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// last number is the clock correction factor which is custom for each clock generator
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i2c_found = clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, 0);
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#endif
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initializeClockOffset();
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if (i2c_found) {
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// Set clocks to 4Mhz/1Mhz for better SA-1 unlocking
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@ -1,6 +1,8 @@
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#include "snes_clk.h"
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#include <si5351.h>
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#include "SdFat.h"
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#include "atoi32.h"
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#include "options.h"
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int32_t readClockOffset() {
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FsFile clock_file;
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@ -8,7 +10,7 @@ int32_t readClockOffset() {
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int16_t i;
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int32_t clock_offset;
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if (!clock_file.open("/snes_clk.txt", FILE_READ)) {
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if (!clock_file.open("/snes_clk.txt", O_READ)) {
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return INT32_MIN;
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}
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@ -44,3 +46,25 @@ int32_t readClockOffset() {
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return clock_offset;
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}
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int32_t initializeClockOffset() {
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#ifdef clockgen_calibration
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FsFile clock_file;
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const char zero_char_arr[] = {'0'};
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int32_t clock_offset = readClockOffset();
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if (clock_offset > INT32_MIN) {
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i2c_found = clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, clock_offset);
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} else {
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i2c_found = clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, 0);
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if(clock_file.open("/snes_clk.txt", O_WRITE | O_CREAT | O_TRUNC)) {
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clock_file.write(zero_char_arr, 1);
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clock_file.close();
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}
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}
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return clock_offset;
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#else
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// last number is the clock correction factor which is custom for each clock generator
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i2c_found = clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, 0);
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return 0;
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#endif
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}
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@ -1,7 +1,14 @@
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#ifndef _SNES_CLK_H
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#define _SNES_CLK_H
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#include <si5351.h>
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#include "SdFat.h"
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#include "atoi32.h"
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#include "options.h"
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extern Si5351 clockgen;
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extern bool i2c_found;
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int32_t readClockOffset();
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int32_t initializeClockOffset();
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#endif
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@ -1 +0,0 @@
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0
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