Part 4_ Daly RS485+UART Protocol (1).pdf (269.2 KB)
Part 3_ Daly CAN Protocol.pdf (329.4 KB)
Part 2 - Daily Smart BMS PC App - DL-R32S模块用户手册 (1).pdf (1022.6 KB)
Part 1 - Daily Smart BMS Manual (1).pdf (2.2 MB)
Can anyone provide the handle schematic? I think it is using the RP2040 chip - https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf
On this device it does have two UARTs, but they are on shared GPIO pins with other functions, so I need to find out the existing mapping and if it’s possible to bring the extra RX out. I guess a soft UART is also possible though.
By the way there are a few existing threads with discussion about this for background (SP140 - Battery low power cut off mechanism & thresold - #12 by evan), and many others where people experience “hard cut” but let’s try to keep solving it in this one 