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@@ -48,6 +48,8 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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#define MAIN_ROWMASK 0xFFF0;
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#define LOWER_ROWMASK 0x3FC0;
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+#define UART_MATRIX_RESPONSE_TIMEOUT 10000
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+
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/* matrix state(1:on, 0:off) */
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static matrix_row_t matrix[MATRIX_ROWS];
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@@ -96,8 +98,6 @@ void matrix_init(void) {
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uint8_t matrix_scan(void)
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{
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- //xprintf("\r\nTRYING TO SCAN");
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-
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uint32_t timeout = 0;
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//the s character requests the RF slave to send the matrix
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@@ -113,18 +113,22 @@ uint8_t matrix_scan(void)
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//harm to leave it in here
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while(!uart_available()){
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timeout++;
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- if (timeout > 10000){
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- xprintf("\r\nTime out in keyboard.");
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+ if (timeout > UART_MATRIX_RESPONSE_TIMEOUT) {
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break;
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}
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}
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- uart_data[i] = uart_read();
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+
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+ if (timeout < UART_MATRIX_RESPONSE_TIMEOUT) {
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+ uart_data[i] = uart_read();
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+ } else {
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+ uart_data[i] = 0x00;
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+ }
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}
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//check for the end packet, the key state bytes use the LSBs, so 0xE0
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//will only show up here if the correct bytes were recieved
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uint8_t checksum = 0x00;
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- for (uint8_t z=0; z<10; z++){
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+ for (uint8_t z = 0; z < 10; z++){
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checksum = checksum^uart_data[z];
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}
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checksum = checksum ^ (uart_data[10] & 0xF0);
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