ttyUSB0 포트의 권한 설정 때문이다.
sudo chmod o+rw /dev/ttyUSB0
노트북에서 make upload permission denied
Posted in 개인/ㄴFROMA by
GitHub: github.com/eldora
Home : eldora.tistory.com
email: markajh@email.com
'개인/ㄴFROMA'에 해당되는 글 3건
- 2013.11.10 노트북에서 make upload permission denied
- 2013.06.28 UART Arrow Key Code
- 2013.06.20 FROMA UART Debug Code
UART Arrow Key Code
Posted in 개인/ㄴFROMA by
http://www.termsys.demon.co.uk/vtansi.htm
http://electronics.stackexchange.com/questions/8874/is-it-possible-to-send-characters-through-serial-to-go-up-a-line-on-the-console
Use VT100 escape codes to control the cursor.
Eg.
puts("\033[2J"); // clear screen
puts("\033[0;0H"); // set cursor to 0,0
puts("\033[10B"); // move cursor down 10 lines
puts("\033[5A"); // move cursor up 5 lines
FROMA UART Debug Code
Posted in 개인/ㄴFROMA by
FROMA 개발 시 디버깅 목적을 위한 코드
## ASM : 특정 문자열 출력 ##
UART_SEND: ldr r1,=0x48020014 // UART3 LSR ldr r2,[r1] and r2,r2,#0x20 cmp r2,#0x00 beq UART_SEND ldr r1,=0x48020000 mov r2,#0x61 //r3 str r2,[r1]
## C : 특정 문자열 출력 ##
while((((*(volatile unsigned int *)(0x48020014))&0x20)>>5)==0);
(*(volatile unsigned int *)(0x48020000)) = 0x61;
## C : 입력한 키 값을 +1하여 반환 ##
#define REG32(addr) (*(volatile unsigned int *)(addr))
unsigned int reg=0x00;
while(1){
while(REG32(0x48020014)&0x01==0);
reg = REG32(0x48020000);
if(reg>0){
while((REG32(0x48020014)&0x20)>>5)==0);
REG32(0x48020000) = reg + 1;
}
