FreeCalypso > hg > freecalypso-sw
view target-utils/tf-breakin/payload.S @ 853:ae254ffeaec3
AT command interface works!
The cause of the breakage was the same Nucleus API issue with NU_Create_Timer()
which we encountered at the very beginning of this project with Riviera timers:
the code in uartfax.c from TCS211 was passing 0 as the initial dummy value for
the timer duration, and our FreeNucleus version doesn't like it. The fix is
the same: pass 1 as the initial dummy value instead.
| author | Space Falcon <falcon@ivan.Harhan.ORG> |
|---|---|
| date | Thu, 30 Apr 2015 01:46:26 +0000 |
| parents | 4e0aa166baa5 |
| children | 7166c8311b0d |
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.text .org 0 .code 32 @ set CPSR like mot931c payload does msr CPSR_c, #0xd3 @ disable the watchdog ldr r1, =0xfffff802 mov r0, #0xf5 strh r0, [r1, #2] mov r0, #0xa0 strh r0, [r1, #2] @ MODEM UART ldr r6, =0xffff5800 @ wait for any previous output to flush out 1: ldrb r0, [r6, #5] tst r0, #0x20 beq 1b @ send our indication adr r1, outstr mov r2, #6 1: ldrb r0, [r1], #1 strb r0, [r6] subs r2, r2, #1 bne 1b @ wait for this output to go out to the TxD pin 1: ldrb r0, [r6, #5] tst r0, #0x40 beq 1b @ enable the Calypso boot ROM ldr r1, =0xFFFFFB10 mov r2, #0x0100 strh r2, [r1] @ jump to it! mov pc, #0 outstr: .byte 2,2,2,'O','K',2