Source | Pistachio Need Car Knowledge Circle | Join the in-vehicle camera community, add WeChat 13501975564, note “Vision” In engineering, issues related to sleep and wake-up are numerous, and many nodes in the vehicle’s network topology face similar problems. For example: communication loss due to shared SPI, nodes unable to sleep, node startup times exceeding … Read more
This article focuses on the wake-up, sleep, and reset of the ECU, examining whether your understanding aligns with these concepts. 1. ECU Wake-up To clarify the ECU wake-up process, we must study the corresponding hardware schematic. The essence of ECU wake-up is to supply power to the ECU. For better understanding, this article simplifies a … Read more
Introduction In low-power applications, it is sometimes necessary to put the MCU into STOP mode to save power. In some chip architectures, to achieve this, the serial port pins are often configured as general I/O pins with external interrupt mode before entering low-power mode. While this can achieve the desired effect, it inevitably leads to … Read more
Qiming Cloud/ 01 Have you ever encountered this? When using the ESP32-C3-MINI-1U module with ESP-IDF version idf5.0.1, there is a probability of failure when waking up from sleep mode, causing the module to hang with no information printed to the serial port. Why is this happening? Qiming Cloud/ 02 What’s going on? The mainboard is … Read more