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I2C driver cleanup (#21273)

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* remove i2c_start and i2c_stop from i2c drivers

* remove static i2c_address variable from chibios i2c driver
This commit is contained in:
David Hoelscher 2024-01-17 07:05:38 -06:00 • committed by GitHub
parent 2b0965944d
commit e9bd7d7ad3
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GPG key ID: B5690EEEBB952194
49 changed files with 280 additions and 603 deletions
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24
keyboards/gboards/gergo/gergo.c
View file

@ -43,23 +43,17 @@ uint8_t init_mcp23018(void) {
// - unused : input : 1
// - input : input : 1
// - driving : output : 0
mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(IODIRA, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(0b10000000, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(0b11111111, I2C_TIMEOUT); if (mcp23018_status) goto out;
i2c_stop();
uint8_t data[] = {0b10000000, 0b11111111};
mcp23018_status = i2c_writeReg(I2C_ADDR, IODIRA, data, sizeof(data), I2C_TIMEOUT);
// set pull-up
// - unused : on : 1
// - input : on : 1
// - driving : off : 0
mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(GPPUA, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(0b10000000, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(0b11111111, I2C_TIMEOUT); if (mcp23018_status) goto out;
if (!mcp23018_status) {
// set pull-up
// - unused : on : 1
// - input : on : 1
// - driving : off : 0
mcp23018_status = i2c_writeReg(I2C_ADDR, GPPUA, data, sizeof(data), I2C_TIMEOUT);
}
out:
i2c_stop();
// SREG=sreg_prev;
//uprintf("Init %x\n", mcp23018_status);
return mcp23018_status;

5
keyboards/gboards/gergo/gergo.h
View file

@ -11,10 +11,7 @@ extern i2c_status_t mcp23018_status;
#define I2C_TIMEOUT 1000
// I2C aliases and register addresses (see "mcp23018.md")
//#define I2C_ADDR 0b0100000
#define I2C_ADDR 0x20
#define I2C_ADDR_WRITE ( (I2C_ADDR<<1) | I2C_WRITE )
#define I2C_ADDR_READ ( (I2C_ADDR<<1) | I2C_READ )
#define I2C_ADDR (0x20<<1)
#define IODIRA 0x00 // i/o direction register
#define IODIRB 0x01
#define GPPUA 0x0C // GPIO pull-up resistor register

20
keyboards/gboards/gergo/matrix.c
View file

@ -297,19 +297,12 @@ static matrix_row_t read_cols(uint8_t row) {
return 0;
} else {
uint8_t data = 0;
mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(GPIOB, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_start(I2C_ADDR_READ, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_read_nack(I2C_TIMEOUT); if (mcp23018_status < 0) goto out;
data = ~((uint8_t)mcp23018_status);
mcp23018_status = I2C_STATUS_SUCCESS;
out:
i2c_stop();
mcp23018_status = i2c_readReg(I2C_ADDR, GPIOB, &data, 1, I2C_TIMEOUT);
#ifdef DEBUG_MATRIX
if (data != 0x00) xprintf("I2C: %d\n", data);
if (~data != 0x00) xprintf("I2C: %d\n", ~data);
#endif
return data;
return ~data;
}
} else {
/* read from teensy
@ -350,11 +343,8 @@ static void select_row(uint8_t row)
// select on mcp23018
if (mcp23018_status) { // do nothing on error
} else { // set active row low : 0 // set other rows hi-Z : 1
mcp23018_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(GPIOA, I2C_TIMEOUT); if (mcp23018_status) goto out;
mcp23018_status = i2c_write(0xFF & ~(1<<row), I2C_TIMEOUT); if (mcp23018_status) goto out;
out:
i2c_stop();
uint8_t data = 0xFF & ~(1<<row);
mcp23018_status = i2c_writeReg(I2C_ADDR, GPIOA, &data, 1, I2C_TIMEOUT);
}
} else {
// Output low(DDR:1, PORT:0) to select