ejung/atmega-uart
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more detailed comments in uart.c

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ejung
2019-12-01 06:18:59 +00:00
parent e2f75268c1
commit 9f817ebf1b
1 changed files with 3 additions and 3 deletions
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6
uart.c
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@@ -17,7 +17,7 @@ void uart_init()
UART_CTRL_REGC |= (1<<UART_URSEL_BM) UART_CTRL_REGC |= (1<<UART_URSEL_BM)
|(1<<UART_UCSZ0_BM) |(1<<UART_UCSZ0_BM)
|(1<<UART_UCSZ1_BM); // 8bit data format |(1<<UART_UCSZ1_BM); // 8bit data format
stdout = &uart_output; stdout = &uart_output;
} }
@@ -42,11 +42,11 @@ void read_sync(char buffer[], uint8_t buffersize, uint8_t * bufferindex){
while ((UART_CTRL_REGA & (1 << UART_RXC_BM)) == 0); while ((UART_CTRL_REGA & (1 << UART_RXC_BM)) == 0);
input = UART_DATA_REG; input = UART_DATA_REG;
putchar(input); //echo putchar(input); // echo
buffer[*bufferindex]=input; buffer[*bufferindex]=input;
*bufferindex=*bufferindex+1; *bufferindex=*bufferindex+1;
}while(!(input == '\n' || input == '\r')); }while(!(input == '\n' || input == '\r'));
buffer[*bufferindex]=0; buffer[*bufferindex]=0; // null terminate
putchar('\n'); putchar('\n');
} }