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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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/* 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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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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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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