diff options
| author | Jacques Comeaux <jacquesrcomeaux@protonmail.com> | 2024-06-04 19:28:25 -0500 |
|---|---|---|
| committer | Jacques Comeaux <jacquesrcomeaux@protonmail.com> | 2024-06-04 19:28:25 -0500 |
| commit | f2f186c3594a922e51abf25b24052c61f833a2bf (patch) | |
| tree | a4cd5bb88adc8b94582ed40a8a7ad04235a9db69 /hexedit/uart.s | |
| parent | b38a844ed9f6ad17d58db3e143ebc0c858762ec6 (diff) | |
Rename stage 0 editor
Diffstat (limited to 'hexedit/uart.s')
| -rw-r--r-- | hexedit/uart.s | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/hexedit/uart.s b/hexedit/uart.s deleted file mode 100644 index e79cbdc..0000000 --- a/hexedit/uart.s +++ /dev/null @@ -1,33 +0,0 @@ -.syntax unified -.cpu cortex-m0plus -.thumb - -.equ UART0_BASE, 0x40034000 -.equ UARTDR_OFST, 0x00 -.equ UARTFR_OFST, 0x18 - -.type uart_send, %function -.global uart_send - -uart_send: - ldr r1, =UART0_BASE - movs r3, 0b1 << 5 // TX FIFO full -1: - ldr r2, [r1, UARTFR_OFST] - tst r2, r3 - bne 1b - strb r0, [r1, UARTDR_OFST] - bx lr - -.type uart_recv, %function -.global uart_recv - -uart_recv: - ldr r1, =UART0_BASE - movs r3, 0b1 << 4 // RX FIFO empty -1: - ldr r2, [r1, UARTFR_OFST] - tst r2, r3 - bne 1b - ldrb r0, [r1, UARTDR_OFST] - bx lr |