gitproxy/RTLPlayground
1
0
Fork 0
mirror of https://github.com/logicog/RTLPlayground.git synced 2026-08-30 14:52:51 +08:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #64 from vDorst/fix_systick_calc

Browse Source 
Fix systick 16-bit writing to timer0 registers.
This commit is contained in:
logicog
2025-12-26 10:42:13 +01:00
committed by GitHub
parent 2a7b8f9838 9ff114d234
commit 3653f90356
2 changed files with 6 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
rtl837x_sfr.h
+4
View File
@@ -97,3 +97,7 @@ __sfr __at(0xb4) SFR_NIC_DATA_H;
__sfr16 __at(0xb6b5) SFR_NIC_RING_U16LE; __sfr16 __at(0xb6b5) SFR_NIC_RING_U16LE;
__sfr __at(0xb5) SFR_NIC_RING_L; __sfr __at(0xb5) SFR_NIC_RING_L;
__sfr __at(0xb6) SFR_NIC_RING_H; __sfr __at(0xb6) SFR_NIC_RING_H;
/* Standard 8051 sfr */
// Timer 0 value
__sfr16 __at(0x8c8a) T0_U16;
rtlplayground.c
+2 -4
View File
@@ -119,8 +119,7 @@ __xdata uint8_t sfp_options[2];
void isr_timer0(void) __interrupt(1) void isr_timer0(void) __interrupt(1)
{ {
TR0 = 0; // Stop timer 0 TR0 = 0; // Stop timer 0
TH0 = SYSTICK_TIMER0_VALUE >> 8; T0_U16 = SYSTICK_TIMER0_VALUE;
TL0 = SYSTICK_TIMER0_VALUE % 0xff;
TR0 = 1; // Re-start timer 0 TR0 = 1; // Re-start timer 0
ticks++; ticks++;
@@ -295,8 +294,7 @@ void setup_timer0(void)
/* The TH0 registers contain the high/low byte that we load into Timer0 when T0 /* The TH0 registers contain the high/low byte that we load into Timer0 when T0
* overflows to 0x10000 * overflows to 0x10000
*/ */
TH0 = SYSTICK_TIMER0_VALUE >> 8; T0_U16 = SYSTICK_TIMER0_VALUE;
TL0 = SYSTICK_TIMER0_VALUE % 0xff;
CKCON &= 0xc7; CKCON &= 0xc7;
TCON = 0x10; // Start timer 0 TCON = 0x10; // Start timer 0