Updated donation link

Merge pull request #6 from Lay31415/Lay31415-patch-1
Fix SPR2 register compilation error for 8MHz ATmega32U4 boards
2025-05-31 19:49:02 -04:00 · 2025-05-31 19:22:52 -04:00 · 2025-06-01 00:57:38 +09:00
2 changed files with 4 additions and 3 deletions
@@ -196,4 +196,4 @@ Additional suggestions and feedback from [progmem](https://github.com/progmem).

 If you appreciate this library or the other projects I do, you can make a monetary donation below. Thanks!

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+[![ko-fi](https://ko-fi.com/img/githubbutton_sm.svg)](https://ko-fi.com/vxzk/tip)
@@ -30,7 +30,8 @@ void PSX_::init(int ackPin = 8, bool invACK = false, bool invCIPO = true) {
 #if (F_CPU == 16000000L)
    SPCR |= (1 << SPR1);  // Fosc/64 @16MHz==250KHz
 #elif (F_CPU == 8000000L)
-    SPCR |= (1 << SPR2) | (1 << SPR1);  // Fosc/32 @8MHz==250KHz
+    SPCR |= (1 << SPR1);    // SPR1=1, SPR0=0 for Fosc/64 base
+    SPSR |= (1 << SPI2X);   // SPI2X=1 for double speed -> Fosc/32 @8MHz==250KHz
 #endif
    SPCR |= (1 << CPHA);  // Setup @ leading edge, sample @ falling edge
    SPCR |= (1 << CPOL);  // Leading edge is falling edge, trailing edge is rising edge
@@ -110,4 +111,4 @@ void PSX_::isr() {
    }
 }

-PSX_ PSX;
+PSX_ PSX;
Author	SHA1	Message	Date
veroxzik	70b3a745ab	Updated donation link	2025-05-31 19:49:02 -04:00
veroxzik	9524fc0acd	Merge pull request #6 from Lay31415/Lay31415-patch-1 Fix SPR2 register compilation error for 8MHz ATmega32U4 boards	2025-05-31 19:22:52 -04:00
Lay31415	83c8651158	Fix SPR2 register error for ATmega32U4 compatibility - Replace non-existent SPR2 with correct SPR1 and SPI2X combination - SPR1=1, SPR0=0, SPI2X=1 achieves Fosc/32 = 250kHz at 8MHz - Resolves compilation error on SparkFun Pro Micro and other ATmega32U4 boards	2025-06-01 00:57:38 +09:00