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Update mos_api.asm for non-blocking mos_ugetc #67

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Update mos_api.asm for non-blocking mos_ugetc #67

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8 changes: 5 additions & 3 deletions src/mos_api.asm
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
; 14/04/2023: Added ffs_api_fopen, ffs_api_fclose, ffs_api_stat, ffs_api_fread, ffs_api_fwrite, ffs_api_feof, ffs_api_flseek
; 15/04/2023: Added mos_api_getfil, mos_api_fread, mos_api_fwrite and mos_api_flseek
; 30/05/2023: Fixed mos_api_fgetc to set carry if at end of file
; 02/06/2023: [LuzrBum] redirected mos_ugetc to UART1_serial_RX, to achieve a non-blocking UART1 read. Breaks backwards compatibility for apps that require block

.ASSUME ADL = 1

Expand Down Expand Up @@ -65,6 +66,7 @@

XREF UART1_serial_GETCH ; In serial.asm
XREF UART1_serial_PUTCH
XREF UART1_serial_RX ; For non-blocking read

XREF _keyascii ; In globals.asm
XREF _keycount
Expand Down Expand Up @@ -647,13 +649,13 @@ mos_api_uopen: LEA HL, IX + 0 ; HLU: Pointer to struct
;
mos_api_uclose: JP _close_UART1

; Get a character from UART1
; Get a character from UART1 (non-blocking)
; Returns:
; A: Character read
; F: C if successful
; F: NC if the UART is not open
;
mos_api_ugetc JP UART1_serial_GETCH
mos_api_ugetc JP UART1_serial_RX ; For non-blocking read - original value was UART1_serial_GETCH

; Write a character to UART1
; C: Character to write
Expand Down Expand Up @@ -939,4 +941,4 @@ ffs_api_getfree:
ffs_api_getlabel:
ffs_api_setlabel:
ffs_api_setcp:
RET
RET