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Automatic sa8x8-fw flashing and patching

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Now the 1.4.1 release of sa8x8-fw is downloaded at every build of the
ttwr21 target, it is converted from s37 to bin to c header file and is
included in the OpenRTX firmware image.
OpenRTX, at runtime detects the band of the radio and patches the
firmware with the appropriate identification string.

TG-553
This commit is contained in:
Niccolò Izzo 2025-10-16 19:17:35 +02:00
parent 35c9fe766c
commit 67a45cb26d
3 changed files with 35 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

9
platform/targets/ttwr21/CMakeLists.txt
View file

@ -6,15 +6,15 @@
cmake_minimum_required(VERSION 3.20.0)
# Download sa8x8-fw from the web and package it as a header file
set(SAX8FW "sa8x8-fw-sa868s-uhf")
set(SA8X8FW "sa8x8-fw-sa868s-uhf")
file(DOWNLOAD
https://github.com/OpenRTX/sa8x8-fw/releases/download/v1.4.1/sa8x8-fw-sa868s-uhf.s37
${CMAKE_CURRENT_LIST_DIR}/${SAX8FW}.s37
${CMAKE_CURRENT_LIST_DIR}/${SA8X8FW}.s37
EXPECTED_HASH SHA512=0e046c745683cf204112feef97ab9cab8718d12b63fa2990a15ae054be28c26b18ae7a3f3518d0c81727426478e08580ce9a67e8f244d31f4401d7430a2e70e4
SHOW_PROGRESS
)
execute_process(COMMAND objcopy -I srec -O binary --gap-fill 0xff --pad-to 0x4000 ${CMAKE_CURRENT_LIST_DIR}/${SAX8FW}.s37 ${CMAKE_CURRENT_LIST_DIR}/${SAX8FW}.bin)
execute_process(COMMAND awk -b -f ${OPENRTX_ROOT}/scripts/bin2c.awk ${CMAKE_CURRENT_LIST_DIR}/${SAX8FW}.bin)
execute_process(COMMAND objcopy -I srec -O binary --gap-fill 0xff --pad-to 0x4000 ${CMAKE_CURRENT_LIST_DIR}/${SA8X8FW}.s37 ${CMAKE_CURRENT_LIST_DIR}/${SA8X8FW}.bin)
execute_process(COMMAND awk -b -f ${OPENRTX_ROOT}/scripts/bin2c.awk ${CMAKE_CURRENT_LIST_DIR}/${SA8X8FW}.bin)
target_sources(app
PRIVATE
@ -46,6 +46,7 @@ target_include_directories(app
${OPENRTX_ROOT}/subprojects/XPowersLib/src
${OPENRTX_ROOT}/subprojects/XPowersLib/src/REG
${CMAKE_CURRENT_LIST_DIR}
)
target_compile_definitions(app PRIVATE PLATFORM_TTWR CONFIG_SCREEN_BRIGHTNESS CONFIG_UI_NO_KEYBOARD)

42
platform/targets/ttwr21/platform.c
View file

@ -144,6 +144,24 @@ void platform_init()
// Initialize PMU
pmu_init();
// Detect radio model and set hwInfo accordingly
enum ttwr21_band band = detect_band();
switch(band) {
case VHF:
hwInfo.vhf_band = 1;
hwInfo.vhf_minFreq = 134;
hwInfo.vhf_maxFreq = 174;
break;
case UHF:
hwInfo.uhf_band = 1;
hwInfo.uhf_minFreq = 400;
hwInfo.uhf_maxFreq = 480;
break;
case MHZ350:
printk("Error: 350MHz band not supported!\n");
break;
}
if (gpio_pin_get_dt(&button_mode)) {
led_color.r = 0x50;
led_color.g = 0x50;
@ -152,8 +170,12 @@ void platform_init()
pmu_setBasebandProgramPower(true);
// If band is VHF we need to patch the firmware
if (band == VHF)
sa8x8_fw_sa868s_uhf[sa8x8_fw_sa868s_uhf_patch_offset] = 'V';
// Flash a supported baseband firmware
if (rl78_flash(sa8x8_fw, sa8x8_fw_len)) {
if (rl78_flash(sa8x8_fw_sa868s_uhf, sa8x8_fw_sa868s_uhf_len)) {
led_color.r = 0x50;
led_color.g = 0x00;
led_color.b = 0x00;
@ -177,24 +199,6 @@ void platform_init()
pmu_setBasebandProgramPower(false);
}
// Detect radio model and set hwInfo accordingly
enum ttwr21_band band = detect_band();
switch(band) {
case VHF:
hwInfo.vhf_band = 1;
hwInfo.vhf_minFreq = 134;
hwInfo.vhf_maxFreq = 174;
break;
case UHF:
hwInfo.uhf_band = 1;
hwInfo.uhf_minFreq = 400;
hwInfo.uhf_maxFreq = 480;
break;
case MHZ350:
printk("Error: 350MHz band not supported!\n");
break;
}
// Enable power to baseband
pmu_setBasebandPower(true);

9
scripts/bin2c.awk
View file

@ -30,9 +30,11 @@ BEGIN {
bytes_x_line = 12
outfile = infile
gsub(getext(infile), ".h", outfile)
arr_name = basename(infile)
gsub("-", "_", arr_name)
# Print header
printf("unsigned char %s[] = {\n", basename(infile)) > outfile
printf("unsigned char %s[] = {\n", arr_name) > outfile
for(i=0; i<len; i+=bytes_x_line) {
printf(" ") > outfile
# printf("0x%08x ", i)
@ -47,7 +49,10 @@ BEGIN {
print "" > outfile
}
printf("};\n\n") > outfile
printf("unsigned int %s_len = %d;\n", basename(infile), len) > outfile
printf("unsigned int %s_len = %d;\n", arr_name, len) > outfile
# Find offset of character to patch (UHF -> VHF)
patch_offset = index($0, "SA868S-UHF") + 6
printf("unsigned int %s_patch_offset = %d;\n", arr_name, patch_offset) > outfile
}
# Extract basename of file
function basename(filename, a) {