mirror of
https://github.com/qmk/qmk_firmware
synced 2024-11-18 18:04:57 +00:00
d2ff66a985
* include variables and .h files as pp directives * start layout compilation * split ergodoxes up * don't compile all layouts for everything * might seg fault * reset layouts variable * actually reset layouts * include rules.mk instead * remove includes from rules.mk * update variable setting * load visualizer from path * adds some more examples * adds more layouts * more boards added * more boards added * adds documentation for layouts * use lowercase names for LAYOUT_ * add layout.json files for each layout * add community folder, default keymaps for layouts * touch-up default layouts * touch-up layouts, some keyboard rules.mk * update documentation for layouts * fix up serial/i2c switches
120 lines
2.3 KiB
C
120 lines
2.3 KiB
C
#include <stdbool.h>
|
|
#include "action.h"
|
|
#include "i2cmaster.h"
|
|
#include "expander.h"
|
|
#include "debug.h"
|
|
|
|
static uint8_t expander_status = 0;
|
|
static uint8_t expander_input = 0;
|
|
|
|
void expander_config(void);
|
|
uint8_t expander_write(uint8_t reg, uint8_t data);
|
|
uint8_t expander_read(uint8_t reg, uint8_t *data);
|
|
|
|
void expander_init(void)
|
|
{
|
|
i2c_init();
|
|
expander_scan();
|
|
}
|
|
|
|
void expander_scan(void)
|
|
{
|
|
dprintf("expander status: %d ... ", expander_status);
|
|
uint8_t ret = i2c_start(EXPANDER_ADDR | I2C_WRITE);
|
|
if (ret == 0) {
|
|
i2c_stop();
|
|
if (expander_status == 0) {
|
|
dprintf("attached\n");
|
|
expander_status = 1;
|
|
expander_config();
|
|
clear_keyboard();
|
|
}
|
|
}
|
|
else {
|
|
if (expander_status == 1) {
|
|
dprintf("detached\n");
|
|
expander_status = 0;
|
|
clear_keyboard();
|
|
}
|
|
}
|
|
dprintf("%d\n", expander_status);
|
|
}
|
|
|
|
void expander_read_cols(void)
|
|
{
|
|
expander_read(EXPANDER_REG_GPIOA, &expander_input);
|
|
}
|
|
|
|
uint8_t expander_get_col(uint8_t col)
|
|
{
|
|
if (col > 4) {
|
|
col++;
|
|
}
|
|
return expander_input & (1<<col) ? 1 : 0;
|
|
}
|
|
|
|
matrix_row_t expander_read_row(void)
|
|
{
|
|
expander_read_cols();
|
|
|
|
/* make cols */
|
|
matrix_row_t cols = 0;
|
|
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
|
|
if (expander_get_col(col)) {
|
|
cols |= (1UL << (MATRIX_COLS - 1 - col));
|
|
}
|
|
}
|
|
|
|
return cols;
|
|
}
|
|
|
|
void expander_unselect_rows(void)
|
|
{
|
|
expander_write(EXPANDER_REG_IODIRB, 0xFF);
|
|
}
|
|
|
|
void expander_select_row(uint8_t row)
|
|
{
|
|
expander_write(EXPANDER_REG_IODIRB, ~(1<<(row+1)));
|
|
}
|
|
|
|
void expander_config(void)
|
|
{
|
|
expander_write(EXPANDER_REG_IPOLA, 0xFF);
|
|
expander_write(EXPANDER_REG_GPPUA, 0xFF);
|
|
expander_write(EXPANDER_REG_IODIRB, 0xFF);
|
|
}
|
|
|
|
uint8_t expander_write(uint8_t reg, uint8_t data)
|
|
{
|
|
if (expander_status == 0) {
|
|
return 0;
|
|
}
|
|
uint8_t ret;
|
|
ret = i2c_start(EXPANDER_ADDR | I2C_WRITE);
|
|
if (ret) goto stop;
|
|
ret = i2c_write(reg);
|
|
if (ret) goto stop;
|
|
ret = i2c_write(data);
|
|
stop:
|
|
i2c_stop();
|
|
return ret;
|
|
}
|
|
|
|
uint8_t expander_read(uint8_t reg, uint8_t *data)
|
|
{
|
|
if (expander_status == 0) {
|
|
return 0;
|
|
}
|
|
uint8_t ret;
|
|
ret = i2c_start(EXPANDER_ADDR | I2C_WRITE);
|
|
if (ret) goto stop;
|
|
ret = i2c_write(reg);
|
|
if (ret) goto stop;
|
|
ret = i2c_rep_start(EXPANDER_ADDR | I2C_READ);
|
|
if (ret) goto stop;
|
|
*data = i2c_readNak();
|
|
stop:
|
|
i2c_stop();
|
|
return ret;
|
|
}
|