From 1f432ec7de6f806d0a329254a97b3dd2997adb37 Mon Sep 17 00:00:00 2001 From: SmartShackMaster Date: Tue, 20 Feb 2024 23:27:17 +0200 Subject: [PATCH] Clear UART read buffer before sending next command (#6200) --- esphome/components/fingerprint_grow/fingerprint_grow.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/esphome/components/fingerprint_grow/fingerprint_grow.cpp b/esphome/components/fingerprint_grow/fingerprint_grow.cpp index 0a46755bd3..e8c6b2537f 100644 --- a/esphome/components/fingerprint_grow/fingerprint_grow.cpp +++ b/esphome/components/fingerprint_grow/fingerprint_grow.cpp @@ -336,6 +336,8 @@ void FingerprintGrowComponent::aura_led_control(uint8_t state, uint8_t speed, ui } uint8_t FingerprintGrowComponent::send_command_() { + while (this->available()) + this->read(); this->write((uint8_t) (START_CODE >> 8)); this->write((uint8_t) (START_CODE & 0xFF)); this->write(this->address_[0]);