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@ -20,6 +20,8 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. |
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#include "matrix.h" |
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#include "uart.h" |
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#define UART_MATRIX_RESPONSE_TIMEOUT 10000 |
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void matrix_init_custom(void) { |
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uart_init(1000000); |
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} |
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@ -34,18 +36,23 @@ bool matrix_scan_custom(matrix_row_t current_matrix[]) { |
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//trust the external keystates entirely, erase the last data
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uint8_t uart_data[11] = {0}; |
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//there are 10 bytes corresponding to 10 columns, and an end byte
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//there are 10 bytes corresponding to 10 columns, and then an end byte
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for (uint8_t i = 0; i < 11; i++) { |
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//wait for the serial data, timeout if it's been too long
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//this only happened in testing with a loose wire, but does no
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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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if (timeout > UART_MATRIX_RESPONSE_TIMEOUT) { |
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break; |
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} |
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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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