Harden Si4684 RSTB config and document power sequencing.

Enable GPIO_PULLDOWN_ENABLE during gpio_config so RSTB cannot glitch high before gpio_set_level(0), and add manual validation notes explaining why the internal pull-down complements the external one. Co-authored-by: Cursor <cursoragent@cursor.com>
2026-07-07 08:34:52 +02:00
parent de0b120551
commit 2e44a166e1
4 changed files with 178 additions and 1 deletions
@@ -389,6 +389,7 @@ std::expected<void, Si4684Error> Si4684Driver::boot(Si4684Band band)
    gpio_config_t rstCfg = {};
    rstCfg.pin_bit_mask = 1ULL << pins_.rstbGpio;
    rstCfg.mode = GPIO_MODE_OUTPUT;
+    rstCfg.pull_down_en = GPIO_PULLDOWN_ENABLE;
    if (gpio_config(&rstCfg) != ESP_OK) {
        return std::unexpected(Si4684Error::ResetFailed);
    }