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uart_hw: removed jumptable approach.

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This commit is contained in:
Martin Preuss
2025-01-15 00:13:02 +01:00
parent 3633bb03fc
commit fff64ae41e
2 changed files with 0 additions and 26 deletions
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5
avr/modules/uart_hw/defs.asm
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@@ -42,8 +42,3 @@
.equ UART_HW_IFACE_SIZE = UART_HW_IFACE_OFFS_MSGIDBUF_DATA+UART_HW_IFACE_MSGIDBUF_SIZE .equ UART_HW_IFACE_SIZE = UART_HW_IFACE_OFFS_MSGIDBUF_DATA+UART_HW_IFACE_MSGIDBUF_SIZE
.equ UART_HW_IFACE_FN_ISR_CHECKATTN = 0
.equ UART_HW_IFACE_FN_ISR_READCHAR = 1
.equ UART_HW_IFACE_FN_ISR_WRITECHAR = 2
.equ UART_HW_IFACE_FN_COUNT = 3

21
avr/modules/uart_hw/lowlevel.asm
View File

@@ -43,27 +43,6 @@ UART_HW_InitInterface:
; ---------------------------------------------------------------------------
; @routine UART_HW_JumpToFunction @global
;
; @param R16 function number (see @ref UART_HW_IFACE_FN_ISR_CHECKATTN)
; @param Y pointer to interface data in SRAM (see @ref UART_HW_IFACE_OFFS_STATE)
; @param Z pointer to IFACE jump table for the given interface
; @clobbers R16, R17, X
UART_HW_JumpToFunction:
cpi r16, UART_HW_IFACE_FN_COUNT
brcc UART_HW_JumpToFunction_ret ; return with cleared CFLAG
mov xl, zl
mov xh, zh
add xl, r16
adc xh, xl
sub xh, xl
push xl
push xh
UART_HW_JumpToFunction_ret:
ret ; indirect jump to address we just pushed onto the stack or return on error
; @end