Revision 142
changed it so that the cardbox ignores uart rx until it gets a key
| trunk/cardbox/serial.c | ||
|---|---|---|
| 55 | 55 |
UCSR0C |= (1<<UCSZ00) | (1<<UCSZ01); |
| 56 | 56 |
} |
| 57 | 57 |
|
| 58 |
// Disables the UART receiver |
|
| 59 |
void serial_disable_rx (void) {
|
|
| 60 |
UCSR0B &= ~(1<<RXEN0); |
|
| 61 |
} |
|
| 62 |
|
|
| 63 |
// Enables the UART receiver |
|
| 64 |
void serial_enable_rx(void) {
|
|
| 65 |
UCSR0B |= (1<<RXEN0); |
|
| 66 |
} |
|
| 67 |
|
|
| 58 | 68 |
// uart_putchar - Low-level function which puts a value into the |
| 59 | 69 |
// Tx buffer for transmission. Automatically injects |
| 60 | 70 |
// a \r before all \n's |
| trunk/cardbox/main.c | ||
|---|---|---|
| 157 | 157 |
start_timer(); |
| 158 | 158 |
|
| 159 | 159 |
c = ' '; |
| 160 |
serial_disable_rx(); |
|
| 160 | 161 |
while(c ==' ') {
|
| 161 | 162 |
if (seconds > TIMEOUT_SECONDS) {
|
| 162 | 163 |
set_timeout_flag(); |
| 163 |
serial_putchar(TT_TIMEOUT); |
|
| 164 |
serial_putchar(TT_TIMEOUT); |
|
| 165 |
serial_enable_rx(); |
|
| 164 | 166 |
break; |
| 165 | 167 |
} |
| 166 | 168 |
|
| 167 | 169 |
c = get_button(); |
| 168 | 170 |
_delay_ms(100); |
| 169 | 171 |
} |
| 172 |
serial_enable_rx(); |
|
| 170 | 173 |
|
| 171 | 174 |
|
| 172 | 175 |
if (timeout_flag == 0) {
|
| ... | ... | |
| 191 | 194 |
case TT_NACK: |
| 192 | 195 |
PORTC &= ~LED_RED; |
| 193 | 196 |
break; |
| 197 |
|
|
| 198 |
case TT_GET_KEY: |
|
| 199 |
PORTC &= (~LED_RED & ~LED_YELLOW & ~LED_GREEN); |
|
| 200 |
break; |
|
| 194 | 201 |
|
| 195 | 202 |
default: |
| 196 | 203 |
PORTC &= (~LED_RED & ~LED_GREEN); |
| trunk/cardbox/serial.h | ||
|---|---|---|
| 45 | 45 |
|
| 46 | 46 |
//serial (serial0) is the ttl serial (wireless) |
| 47 | 47 |
void serial_init( unsigned int ubrr); |
| 48 |
void serial_disable_rx(void); |
|
| 49 |
void serial_enable_rx(void); |
|
| 48 | 50 |
int serial_putchar(char c); |
| 49 | 51 |
int serial_getchar(void); |
| 50 | 52 |
int serial_getchar_nb(void); |
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