Bauteil: CH552

Low-Cost Microcontroller

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  • Thread

    How write to CH552 data flash

    I would like so me help writing to CH552 data flash. I am able to write and read to/from standard flash memory but when I try to write to 0xC000 to 0xC0FF the CH552 reboots continuously. I tried just reading from 0xC000-0xC0FF without writing and the CH552 still reboots continuously. I have attached a text file showing how I try to write to data flash. This works OK if writing to flash below 16K. Regards, Bert

    µC & Digital Electronics ·Bert V. · ·4 Replies

  • Thread

    CH552 flash writes maximum number far greater than 200

    The CH552 documentation states that the CH552 flash memory can be reprogrammed a minimum of "about 200 times under 5V power supply". I wrote a simple program to write to the same CH552 flash rom location

    I'm using flash memory as a large non volatile storage space for variables. The main CH552 application software will only get programmed a few times but when using the application some variables need to be stored when the user changes them. There are about 32 bytes that need storing.

    µC & Digital Electronics ·Bert V. · ·5 Replies

  • Thread

    Ch55xduino, Arduino development package for ch55x

    Hi, Im working on a CH552 project using ch55xduino IDE with a Development Board: “CH552 Core Board by WeActStudio” I trying to write a simple text “Hello,World" to an port port (31) TXD. But can not get the code working

    µC & Digital Electronics ·dsun · ·11 Replies

  • Thread

    ch55xduino - CH552 serial print to txd port

    Hi, Im working on a CH552 project using ch55xduino IDE with a Development Board: “CH552 Core Board by WeActStudio” I trying to write a simple text “Hello,World" to an cpu port (31) TXD. But can not get the code working

    µC & Digital Electronics ·Henrik A. · ·5 Replies

  • Thread

    Request help getting CH552 serial port working

    Does anyone know how to get the CH552 serial port 1 configured and working? I can get serial port 0 working but can't get serial port1 working for the life of me. I configure the serial port1 this way but get no output: SCON1=0x70

    have the following code: while(1) { SBUF1='A'; DlyMs(100); } TxD1 is on P1.7 (CH552T pin#5) Regards, Bert van den Berg New Zealand

    µC & Digital Electronics ·Bert V. · ·2 Replies

  • Thread

    CH552 serial receive and serial transmit at different baud rates?

    I program the serial port0 to 4800 baud and it sends data at 4800 baud but only correctly receives data at 9600 baud. Any ideas?

    µC & Digital Electronics ·Bert V. · ·1 Replies

  • File

    global.h

    /* * globsl.h - part of USBasp * * Autor..........: usbman (for ch552) * Description....: some wrapper macros * Licence........: GNU GPL v2 (see Readme.txt) * Creation Date..: 2005-02-23 * Last change....: 2024-12-13 */ #ifndef __global_h__ #include "ch554.h" //#ifdef

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