Final pre-release

2023-03-02 17:29:30 +01:00
parent 01b1be0629
commit 3f02dfd309
47 changed files with 4803 additions and 1836 deletions
--- a/code/pit_early_delay.cpp
+++ b/code/pit_early_delay.cpp
@ -0,0 +1,12 @@
+// Excerpt from the "earlyDelay" function
+void Pit::earlyDelay(uint16_t us) {
+    uint32_t counter = (static_cast<double>(BASE_FREQUENCY) / 1'000'000) * us;
+
+    controlPort.writeByte(0b110000);                                  // Channel 0, mode 0
+    dataPort0.writeByte(static_cast<uint8_t>(counter & 0xFF));        // Low byte
+    dataPort0.writeByte(static_cast<uint8_t>((counter >> 8) & 0xFF)); // High byte
+
+    do {
+        controlPort.writeByte(0b11100010);        // Readback channel 0
+    } while (!(dataPort0.readByte() & (1 << 7))); // Bit 7 is the output pin state
+}