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| 1 | int main() {
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| 2 | - | // Open file /dev/ttySn |
| 2 | + | int fd = open( "/dev/ttyS4", O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK ); |
| 3 | - | FILE* fp_ttysn; |
| 3 | + | if( fd < 0 ) {
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| 4 | - | fp_ttysn = fopen("/dev/ttyS4", "rw");
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| 4 | + | perror( "open" ); |
| 5 | - | uart_enable_rs485(fp_ttysn, 1); |
| 5 | + | return 1; |
| 6 | - | fclose(fp_ttysn); |
| 6 | + | } |
| 7 | if( uart_enable_rs485( fd, true ) < 0 ) {
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| 8 | perror( "uart_enable_rs485" ); | |
| 9 | return 1; | |
| 10 | } | |
| 11 | close( fd ); | |
| 12 | return 0; | |
| 13 | } | |
| 14 |
