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Fix: Serial Timer1: GATE bit should be off.

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Fixes PR#66, commit c5c6b97 and 4e8eb6d.

The GATE-bit should not be used. Timer1 must always be activated to
generate the baudrate clock for serial 0.
This commit is contained in:
René van Dorst
2026-01-10 11:01:17 +01:00
parent 4e8eb6d766
commit f43bb4eac4
2 changed files with 2 additions and 2 deletions
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rtlplayground.c
+1 -1
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@@ -1693,7 +1693,7 @@ void setup_serial_timer1(void)
{
// Timer 1: Mode 2: automatic reload
TMOD &= 0x0F;
TMOD |= 0xA0; // Timer1: GATE, Mode2: Timer, 8-bit with auto-reload
TMOD |= 0x20; // Timer1: Mode2: Timer, 8-bit with auto-reload
CKCON |= 0x10; // Timer1 clock divider: F_SYS / 4: T2M = 1, Timer 1 uses clk/4
PCON |= 0x80; // SMOD0 = 1; Double the Baud Rate, don't divide Timer 1 Overflag signal.