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debug(usb-deployer): log per-attempt get_sync bytes for diagnosis

This commit is contained in:
a2nr 2026-07-19 16:44:56 +07:00
parent 2a09ee77ab
commit ee9563dbd7
1 changed files with 12 additions and 9 deletions
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21
velxio-deployer-firmware/main/stk500v1.c
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@ -25,7 +25,7 @@ static bool read_exact(uint8_t *buf, size_t resp_len, uint32_t timeout_ms)
int n = usb_host_read_cdc(buf + got, resp_len - got, chunk_to); int n = usb_host_read_cdc(buf + got, resp_len - got, chunk_to);
if (n < 0) { if (n < 0) {
/* timeout or error on this chunk — keep trying until deadline */ ESP_LOGD(TAG, "read_exact: got %d/%d (n=%d)", (int)got, (int)resp_len, n);
continue; continue;
} }
if (n > 0) { if (n > 0) {
@ -83,6 +83,7 @@ static bool send_and_expect(const uint8_t *cmd, size_t cmd_len,
bool stk500v1_init(void) bool stk500v1_init(void)
{ {
esp_log_level_set(TAG, ESP_LOG_DEBUG);
ESP_LOGI(TAG, "STK500v1 layer initialised (optiboot / ATmega328P)"); ESP_LOGI(TAG, "STK500v1 layer initialised (optiboot / ATmega328P)");
return true; return true;
} }
@ -92,19 +93,21 @@ static bool cmd_get_sync(void)
uint8_t cmd[] = { STK_GET_SYNC, STK_CRC_EOP }; uint8_t cmd[] = { STK_GET_SYNC, STK_CRC_EOP };
for (int attempt = 0; attempt < STK_SYNC_RETRIES; attempt++) { for (int attempt = 0; attempt < STK_SYNC_RETRIES; attempt++) {
ESP_LOGI(TAG, "get_sync attempt %d/%d: sending 0x30 0x20", attempt + 1, STK_SYNC_RETRIES);
if (send_and_expect(cmd, sizeof(cmd), NULL, 0, if (send_and_expect(cmd, sizeof(cmd), NULL, 0,
STK_CMD_TIMEOUT_MS, true)) { STK_CMD_TIMEOUT_MS, true)) {
if (attempt > 0) { ESP_LOGI(TAG, "get_sync OK after %d attempt(s)", attempt + 1);
ESP_LOGI(TAG, "get_sync OK after %d retries", attempt);
} else {
ESP_LOGI(TAG, "get_sync OK");
}
return true; return true;
} }
/* Drain any stray bytes before retrying. */ /* Drain any stray bytes before retrying. */
uint8_t drain[16]; uint8_t drain[32];
usb_host_read_cdc(drain, sizeof(drain), 10); int drained = usb_host_read_cdc(drain, sizeof(drain), 30);
vTaskDelay(pdMS_TO_TICKS(20)); if (drained > 0) {
ESP_LOGW(TAG, "drained %d bytes after attempt %d: first=0x%02X", drained, attempt + 1, drain[0]);
}
uint32_t backoff = (20u << attempt);
if (backoff > 150u) backoff = 150u;
vTaskDelay(pdMS_TO_TICKS(backoff));
} }
ESP_LOGE(TAG, "get_sync failed after %d attempts", STK_SYNC_RETRIES); ESP_LOGE(TAG, "get_sync failed after %d attempts", STK_SYNC_RETRIES);
return false; return false;