Stlink: STM32L476 DISCOVERY : st-flash 쓰기 실패

나는 Nucleo L476RG 보드에서 stlink 1.5.0과 1.6.0 모두에서 동일한 회귀를 경험했지만 git의 최신 버전은이 출력을 생성합니다 (USB 로그 메시지를 stdout으로 스팸하는 것을 중지 한 후).

st-flash 1.6.0-370-g05f79e1-dirty
2020-06-13T07:03:42 INFO common.c: L4xx: 96 KiB SRAM, 1024 KiB flash in at least 2 KiB pages.
file /home/crest/mecrisp-stellaris-2.5.4/mecrisp-stellaris-source/stm32l476-ra-nucleo/mecrisp-stellaris-stm32l476.bin md5 checksum: 2a291252c8ab59ec649217f666b78d4, stlink checksum: 0x001f2ba2
2020-06-13T07:03:42 INFO common.c: Attempting to write 20304 (0x4f50) bytes to stm32 address: 134217728 (0x8000000)
EraseFlash - Page:0x0 Size:0x800 2020-06-13T07:03:42 INFO common.c: Flash page at addr: 0x08000000 erased
EraseFlash - Page:0x1 Size:0x800 2020-06-13T07:03:42 INFO common.c: Flash page at addr: 0x08000800 erased
EraseFlash - Page:0x2 Size:0x800 2020-06-13T07:03:42 INFO common.c: Flash page at addr: 0x08001000 erased
EraseFlash - Page:0x3 Size:0x800 2020-06-13T07:03:42 INFO common.c: Flash page at addr: 0x08001800 erased
EraseFlash - Page:0x4 Size:0x800 2020-06-13T07:03:42 INFO common.c: Flash page at addr: 0x08002000 erased
EraseFlash - Page:0x5 Size:0x800 2020-06-13T07:03:42 INFO common.c: Flash page at addr: 0x08002800 erased
EraseFlash - Page:0x6 Size:0x800 2020-06-13T07:03:42 INFO common.c: Flash page at addr: 0x08003000 erased
EraseFlash - Page:0x7 Size:0x800 2020-06-13T07:03:42 INFO common.c: Flash page at addr: 0x08003800 erased
EraseFlash - Page:0x8 Size:0x800 2020-06-13T07:03:42 INFO common.c: Flash page at addr: 0x08004000 erased
EraseFlash - Page:0x9 Size:0x800 2020-06-13T07:03:42 INFO common.c: Flash page at addr: 0x08004800 erased
2020-06-13T07:03:42 INFO common.c: Finished erasing 10 pages of 2048 (0x800) bytes
2020-06-13T07:03:42 INFO common.c: Starting Flash write for F2/F4/L4
2020-06-13T07:03:42 INFO flash_loader.c: Successfully loaded flash loader in sram
size: 20304
2020-06-13T07:03:43 ERROR flash_loader.c: flash loader run error
2020-06-13T07:03:43 ERROR common.c: stlink_flash_loader_run(0x8000000) failed! == -1
stlink_fwrite_flash() == -1

타이밍 문제라고 생각합니다. stm32l432에서도 같은 문제가 발생했습니다. 문제를 해결하는 것으로 보이는 flash_loader.c에서 다음과 같이 변경했습니다. 그것이 근본 원인이라고 말하기가 주저합니다.

@@ -368,7 +368,7 @@ int stlink_flash_loader_run(stlink_t *sl, flash_loader_t* fl
, stm32_addr_t targe
 // by increasing the sleep-per-round to the same order-of-magnitude as
 // the tick-rounding that the OS uses, the wait until the error message is
 // reduced to the same order of magnitude as what was intended. -- REW.
-#define WAIT_ROUNDS 100
+#define WAIT_ROUNDS 200
     /* wait until done (reaches breakpoint) */
     for (i = 0; i < WAIT_ROUNDS; i++) {
         usleep(1000);

@geoffreymbrown : @tabemann 및 / 또는 @Crest가 확인되는 즉시 PR로 제출해 주시겠습니까?

Nucleo STM32L476RG 보드와 온보드 ST-LINK / V2-1을 사용하여 개발 브랜치에서 패치를 테스트했습니다. 패치는 회귀를 수정했습니다. 조사해 주셔서 감사합니다.

@geoffreymbrown : 그럼 이걸 맡길 게요 ...