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Nuvoton MS51 series BSP for Small Device C Compiler (SDCC).

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MS51BSP_SDCC

Nuvoton MS51 series BSP for Small Device C Compiler (SDCC).
Now support MS51FB9AE_MS51XB9AE_MS51XB9BE (MS51_16K). Hello World tested.

Usage

  1. Download and install SDCC. Check "Add to system path" in the end of installation.
    http://sdcc.sourceforge.net/
  2. Download and install Nuvoton Nu-Link command tool. Add to system path manually.
    https://www.nuvoton.com/tool-and-software/software-development-tool/programmer
  3. Restart your computer.
  4. Refer to "SampleCode/Template/Project_temp/SDCC/". Simply clone and double click "buildall.bat".

Nuvoton MS51FB9AE

  • It's a 25-cent 1T machine cycle enhanced 8051 microcontroller.
  • Internal 24MHz high-speed oscillator.
  • Internal 10KHz low-speed oscillator provide low power operating.
  • 16KB program flash with 128-Byte security protection area.
  • 256-Byte IRAM and additional 1KB XRAM.
  • 12-bit ADC, 16-bit PWM, two UART and one I2C.
  • Pin interrupt on most I/O pins.
  • Support ICP (In-circuit programming)
  • Support ISP (In-system programming)
  • Support IAP (In-application programming), provide EEPROM purpose.
  • Pin to pin compatible with N76E003AT20 and STM8S003.

Change

  1. SFR define.
/* Keil */
sfr P0 = 0x80;
sbit P07 = P0^7;

/* SDCC */
__sfr __at (0x80) P0;
__sbit __at (0x87) P07;
  1. __code, __data, __xdata

Add or replace

  1. Add asm macro to replace Keil's intrins.h
  2. Add "buildall.bat".
  3. Add "loadflash.bat".
  4. Add "putchar.c" for printf().

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Nuvoton MS51 series BSP for Small Device C Compiler (SDCC).

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  • C 97.3%
  • C++ 1.7%
  • Other 1.0%