/tags/embedded-system/ Recent content in embedded-system on Shylock Hg Hugo -- gohugo.io en-us Thu, 31 May 2018 00:00:00 +0000 /post/2018/05/31/cross-develop-in-linux/ Thu, 31 May 2018 00:00:00 +0000 /post/2018/05/31/cross-develop-in-linux/ Architecture build system cross compiler toolchain such as gcc-xxx-xxx-xxx. support files such as SDK(ARCH, register, HAL), linker script, Makefile. option: debug architecture debugger driver such as jlink , stlink. debugger gdb server. gdb of toolchain. /post/2018/05/23/arm-microlib-implement/ Wed, 23 May 2018 00:00:00 +0000 /post/2018/05/23/arm-microlib-implement/ stdio.h int fgetc(FILE * stream){ if(stdin == stream){ //< implement input one character char c = HAL_UART_Receive(); return c; } return EOF; } int fputc(int ch, FILE *f){ if(stdout == stream){ //< implement output one character HAL_UART_Transmit(ch); return ch; }else if(stderr == stream){ HAL_UART_Transmit(ch); return ch; } return EOF; } int ferror(FILE * f){ switch(f){ case stdin: break; case stdout: break; case stderr: break; default: return EOF; } } assert. /post/2018/02/25/tips-of-constructing-environment-for-xtensa-esp32-elf/ Sun, 25 Feb 2018 00:00:00 +0000 /post/2018/02/25/tips-of-constructing-environment-for-xtensa-esp32-elf/ 1.Environment 1.x86_64 Linux 4.14.14-1-ARCH 2.Tips of build cross-toolchain 1.Need to build xtensa-esp32-elf toolchain locally. 2.If build fail for mistake of scm_ports.o interface.Then change the value of CT_GDB_CROSS_EXTRA_CONFIG_ARRAY to ”–with-guile=guile-2.0” in file crosstool-NG/.config. 3.The tookchain built included in crosstool-NG/builds/xtensa-esp32-elf/bin. 3.Tips of ESP-IDF ESP-IDF:The specific API/lib of esp-32.