#include "util.h"
#include "matrix.h"
#include QMK_KEYBOARD_H
-#include "i2cmaster.h"
#ifdef DEBUG_MATRIX_SCAN_RATE
#include "timer.h"
#endif
static void select_row(uint8_t row);
static uint8_t mcp23018_reset_loop;
+// static uint16_t mcp23018_reset_loop;
#ifdef DEBUG_MATRIX_SCAN_RATE
uint32_t matrix_timer;
{
if (mcp23018_status) { // if there was an error
if (++mcp23018_reset_loop == 0) {
+ // if (++mcp23018_reset_loop >= 1300) {
// since mcp23018_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans
// this will be approx bit more frequent than once per second
print("trying to reset mcp23018\n");
mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(GPIOB); if (mcp23018_status) goto out;
mcp23018_status = i2c_start(I2C_ADDR_READ); if (mcp23018_status) goto out;
- data = i2c_readNak();
+ data = i2c_read_nack();
data = ~data;
out:
i2c_stop();
*/
static void unselect_rows(void)
{
- // unselect on mcp23018
- if (mcp23018_status) { // if there was an error
- // do nothing
- } else {
- // set all rows hi-Z : 1
- mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out;
- mcp23018_status = i2c_write(0xFF); if (mcp23018_status) goto out;
- out:
- i2c_stop();
- }
+ // no need to unselect on mcp23018, because the select step sets all
+ // the other row bits high, and it's not changing to a different
+ // direction
// unselect on teensy
// Hi-Z(DDR:0, PORT:0) to unselect