I'm trying to boot the XK-Voice-SQ66 from another MCU, by providing the firmware image over SPI. This helps keep our part cost and board complexity down, but haven't been having much luck with it.
Board Setup
1. Solder 1 wire to PIN 10 of J1 for the RST_N
2. Solder 1 wire to PIN to BOOT_SEL of J6
3. Connected pins: CS, CLK, MOSI, RST_N, BOOT_SEL
Firmware Compilation
export PATH="$PATH:/Applications/XMOS_XTC_15.2.1/bin"
source "/Applications/XMOS_XTC_15.2.1/SetEnv.sh"
cd /Users/kevin/Downloads/XVF3800-Software_v3_0_0/sources
pip3 install -r requirements_build.txt
cmake --preset=rel_app_xvf3800
cmake --build --preset=ua-io48-sqr
Generate the SPI BIN
python3 /Users/kevin/Downloads/XVF3800-Software_v3_0_0/sources/modules/fwk_xvf/modules/boot_spi_slave/scripts/generate_image.py build/application_xvf3800_ua-io48-sqr.xe
At this point the bin file is copied to the MCU for flashing by SPI... SPI is set:
- To a 5 Mhz Clock Rate
- Mode: 0/0
- LSB First (for each byte)
- Half Duplex
- Include a delay of 2ms with every 4092 bytes sent (the sending MCU can only send 4096-4 bytes at a time)
What I've tried:
- Verified the CRC of the BIN from my computer matches what will be sent by the MCU
- Setting various clock rates (0.1, 2, 4, 10 Mhz)
- Check what the signal looks like through PulseView
From my understanding of the data sheets after the image is clocked in, the board is XVF is just supposed to boot.
xxd output of the beginning of the .bin file:
PulseView output of the beginning of SPI communication, showing the LSB data on MOSI
PulseView output of the overall signal. CS is not immediately brought high, because I need to send the data in several transactions...
This leads me to xrun --dumpstate which reveals the following the following 2x debug statements:
Code: Select all
xrun: Program received signal ET_ECALL, Application exception.
0x000fe504 in ?? ()
***** Active Cores *****
2 tile[1] core[0] 0xfff008ec in ?? ()
* 1 tile[0] core[0] 0x000fe504 in ?? ()
Thread 2 (tile[1] core[0]):
***** Call Stack *****
#0 0xfff008ec in ?? ()
#1 0xfff00406 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
***** Disassembly *****
0xfff008ec: in (2r) r1, res[r6] *
0xfff008ee: setd (r2r) res[r6], r1
0xfff008f0: in (2r) r2, res[r6] *
0xfff008f2: ldw (ru6) r4, dp[0x0]
0xfff008f4: mkmsk (rus) r5, 0x20
***** Registers *****
r0 0x0 0
r1 0x0 0
r2 0x0 0
r3 0x80000 524288
r4 0x200100 2097408
r5 0x0 0
r6 0x10002 65538
r7 0x45 69
r8 0x0 0
r9 0x10003 65539
r10 0x3 3
r11 0x40b 1035
cp 0x0 0
dp 0xfff026c8 -1038648
sp 0xfff7c 1048444
lr 0xfff00406 -1047546
pc 0xfff008ec -1046292
sr 0x40 64
spc 0x0 0
ssr 0x0 0
et 0x0 0
ed 0x0 0
sed 0x0 0
kep 0xfff00500 -1047296
ksp 0xfff008ec -1046292
vec_vsr 0x0 0
vec_c {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}
vec_d {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}
vec_r {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}
Thread 1 (tile[0] core[0]):
***** Call Stack *****
#0 0x000fe504 in ?? ()
#1 0x000fedac in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
***** Disassembly *****
0xfe504: ecallf (1r) r0
0xfe506: nop (0r)
0xfe508: ldaw (ru6) r7, sp[0x2]
0xfe50a: add (2rus) r0, r8, 0x0
0xfe50c: add (2rus) r1, r7, 0x0
***** Registers *****
r0 0x0 0
r1 0x1 1
r2 0x22000000 570425344
r3 0x20 32
r4 0x0 0
r5 0x722 1826
r6 0x7e6136 8282422
r7 0x0 0
r8 0x80000 524288
r9 0x3 3
r10 0x6 6
r11 0x2200 8704
cp 0xffc20 1047584
dp 0xffcb8 1047736
sp 0xfff38 1048376
lr 0xfedac 1043884
pc 0xfe504 1041668
sr 0x51 81
spc 0xfe504 1041668
ssr 0x100 256
et 0x18 24
ed 0x0 0
sed 0x0 0
kep 0xfe280 1041024
ksp 0xfe2ca 1041098
vec_vsr 0x0 0
vec_c {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}
vec_d {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}
vec_r {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}
vec_r {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}Code: Select all
***** Active Cores *****
2 tile[1] core[0] 0xfff008ec in ?? ()
* 1 tile[0] core[0] 0xfff00b04 in ?? ()
Thread 2 (tile[1] core[0]):
***** Call Stack *****
#0 0xfff008ec in ?? ()
#1 0xfff00406 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
***** Disassembly *****
0xfff008ec: in (2r) r1, res[r6] *
0xfff008ee: setd (r2r) res[r6], r1
0xfff008f0: in (2r) r2, res[r6] *
0xfff008f2: ldw (ru6) r4, dp[0x0]
0xfff008f4: mkmsk (rus) r5, 0x20
***** Registers *****
r0 0x0 0
r1 0x0 0
r2 0x0 0
r3 0x80000 524288
r4 0x200100 2097408
r5 0x0 0
r6 0x10002 65538
r7 0x45 69
r8 0x0 0
r9 0x10003 65539
r10 0x3 3
r11 0x40b 1035
cp 0x0 0
dp 0xfff026c8 -1038648
sp 0xfff7c 1048444
lr 0xfff00406 -1047546
pc 0xfff008ec -1046292
sr 0x40 64
spc 0x0 0
ssr 0x0 0
et 0x0 0
ed 0x0 0
sed 0x0 0
kep 0xfff00500 -1047296
ksp 0x0 0
vec_vsr 0x0 0
vec_c {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}
vec_d {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}
vec_r {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}
Thread 1 (tile[0] core[0]):
***** Call Stack *****
#0 0xfff00b04 in ?? ()
#1 0xfff004c8 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
***** Disassembly *****
0xfff00b04: in (2r) r11, res[r1] *
0xfff00b06: ldc (ru6) r11, 0x0
0xfff00b08: setd (r2r) res[r1], r11
0xfff00b0a: waiteu (0r) *
0xfff00b0c: in (2r) r8, res[r3] *
***** Registers *****
r0 0x10100 65792
r1 0x10200 66048
r2 0x106 262
r3 0x10300 66304
r4 0x80000 524288
r5 0x0 0
r6 0xedb88320 -306674912
r7 0xffffffff -1
r8 0x0 0
r9 0x3 3
r10 0x7 7
r11 0x1 1
cp 0x0 0
dp 0xfff026c8 -1038648
sp 0xfff7c 1048444
lr 0xfff004c8 -1047352
pc 0xfff00b04 -1045756
sr 0x40 64
spc 0x0 0
ssr 0x0 0
et 0x0 0
ed 0x0 0
sed 0x0 0
kep 0xfff00500 -1047296
ksp 0x0 0
vec_vsr 0x0 0
vec_c {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}
vec_d {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}
vec_r {v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v16_int16 = {0x0 <repeats 16 times>}, v32_int8 = {0x0 <repeats 32 times>}}
Regards,
Kevin