M keyboards/3w6/rev1/matrix.c => keyboards/3w6/rev1/matrix.c +33 -55
@@ 35,8 35,6 @@ extern i2c_status_t tca9555_status;
// | 0 | 1 | 0 | 0 | A2 | A1 | A0 |
// | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
#define I2C_ADDR 0b0100000
-#define I2C_ADDR_WRITE ((I2C_ADDR << 1) | I2C_WRITE)
-#define I2C_ADDR_READ ((I2C_ADDR << 1) | I2C_READ)
// Register addresses
#define IODIRA 0x06 // i/o direction register
@@ 64,19 62,14 @@ uint8_t init_tca9555(void) {
// - unused : input : 1
// - input : input : 1
// - driving : output : 0
- tca9555_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_write(IODIRA, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- // This means: write on pin 5 of port 0, read on rest
- tca9555_status = i2c_write(0b11011111, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- // This means: we will write on pins 0 to 2 on port 1. read rest
- tca9555_status = i2c_write(0b11111000, I2C_TIMEOUT);
- if (tca9555_status) goto out;
-
-out:
- i2c_stop();
+ uint8_t conf[2] = {
+ // This means: write on pin 5 of port 0, read on rest
+ 0b11011111,
+ // This means: we will write on pins 0 to 2 on port 1. read rest
+ 0b11111000,
+ };
+ tca9555_status = i2c_writeReg(I2C_ADDR, IODIRA, conf, 2, I2C_TIMEOUT);
+
return tca9555_status;
}
@@ 192,36 185,29 @@ static matrix_row_t read_cols(uint8_t row) {
if (tca9555_status) { // if there was an error
return 0;
} else {
- uint8_t data = 0;
- uint8_t port0 = 0;
- uint8_t port1 = 0;
- tca9555_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_write(IREGP0, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_start(I2C_ADDR_READ, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_read_ack(I2C_TIMEOUT);
- if (tca9555_status < 0) goto out;
- port0 = (uint8_t)tca9555_status;
- tca9555_status = i2c_read_nack(I2C_TIMEOUT);
- if (tca9555_status < 0) goto out;
- port1 = (uint8_t)tca9555_status;
-
- // The initial state was all ones and any depressed key at a given column for the currently selected row will have its bit flipped to zero.
- // The return value is a row as represented in the generic matrix code were the rightmost bits represent the lower columns and zeroes represent non-depressed keys while ones represent depressed keys.
- // Since the pins are not ordered sequentially, we have to build the correct dataset from the two ports. Refer to the schematic to see where every pin is connected.
- data |= ( port0 & 0x01 );
- data |= ( port0 & 0x02 );
- data |= ( port1 & 0x10 ) >> 2;
- data |= ( port1 & 0x08 );
- data |= ( port0 & 0x40 ) >> 2;
- data = ~(data);
-
- tca9555_status = I2C_STATUS_SUCCESS;
- out:
- i2c_stop();
- return data;
+ uint8_t data = 0;
+ uint8_t ports[2] = {0};
+ tca9555_status = i2c_readReg(I2C_ADDR, IREGP0, ports, 2, I2C_TIMEOUT);
+ if (tca9555_status) { // if there was an error
+ // do nothing
+ return 0;
+ } else {
+ uint8_t port0 = ports[0];
+ uint8_t port1 = ports[1];
+
+ // The initial state was all ones and any depressed key at a given column for the currently selected row will have its bit flipped to zero.
+ // The return value is a row as represented in the generic matrix code were the rightmost bits represent the lower columns and zeroes represent non-depressed keys while ones represent depressed keys.
+ // Since the pins are not ordered sequentially, we have to build the correct dataset from the two ports. Refer to the schematic to see where every pin is connected.
+ data |= ( port0 & 0x01 );
+ data |= ( port0 & 0x02 );
+ data |= ( port1 & 0x10 ) >> 2;
+ data |= ( port1 & 0x08 );
+ data |= ( port0 & 0x40 ) >> 2;
+ data = ~(data);
+
+ tca9555_status = I2C_STATUS_SUCCESS;
+ return data;
+ }
}
}
}
@@ 263,18 249,10 @@ static void select_row(uint8_t row) {
default: break;
}
- tca9555_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_write(OREGP0, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_write(port0, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_write(port1, I2C_TIMEOUT);
- if (tca9555_status) goto out;
+ uint8_t ports[2] = {port0, port1};
+ tca9555_status = i2c_writeReg(I2C_ADDR, OREGP0, ports, 2, I2C_TIMEOUT);
// Select the desired row by writing a byte for the entire GPIOB bus where only the bit representing the row we want to select is a zero (write instruction) and every other bit is a one.
// Note that the row - MATRIX_ROWS_PER_SIDE reflects the fact that being on the right hand, the columns are numbered from MATRIX_ROWS_PER_SIDE to MATRIX_ROWS, but the pins we want to write to are indexed from zero up on the GPIOB bus.
- out:
- i2c_stop();
}
}
}
M keyboards/3w6/rev2/matrix.c => keyboards/3w6/rev2/matrix.c +31 -50
@@ 35,8 35,6 @@ extern i2c_status_t tca9555_status;
// | 0 | 1 | 0 | 0 | A2 | A1 | A0 |
// | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
#define I2C_ADDR 0b0100000
-#define I2C_ADDR_WRITE ((I2C_ADDR << 1) | I2C_WRITE)
-#define I2C_ADDR_READ ((I2C_ADDR << 1) | I2C_READ)
// Register addresses
#define IODIRA 0x06 // i/o direction register
@@ 64,19 62,14 @@ uint8_t init_tca9555(void) {
// - unused : input : 1
// - input : input : 1
// - driving : output : 0
- tca9555_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_write(IODIRA, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- // This means: read all pins of port 0
- tca9555_status = i2c_write(0b11111111, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- // This means: we will write on pins 0 to 3 on port 1. read rest
- tca9555_status = i2c_write(0b11110000, I2C_TIMEOUT);
- if (tca9555_status) goto out;
-
-out:
- i2c_stop();
+ uint8_t conf[2] = {
+ // This means: read all pins of port 0
+ 0b11111111,
+ // This means: we will write on pins 0 to 3 on port 1. read rest
+ 0b11110000,
+ };
+ tca9555_status = i2c_writeReg(I2C_ADDR, IODIRA, conf, 2, I2C_TIMEOUT);
+
return tca9555_status;
}
@@ 194,32 187,27 @@ static matrix_row_t read_cols(uint8_t row) {
} else {
uint8_t data = 0;
uint8_t port0 = 0;
- tca9555_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_write(IREGP0, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_start(I2C_ADDR_READ, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_read_nack(I2C_TIMEOUT);
- if (tca9555_status < 0) goto out;
-
- port0 = ~(uint8_t)tca9555_status;
-
- // We read all the pins on GPIOA.
- // The initial state was all ones and any depressed key at a given column for the currently selected row will have its bit flipped to zero.
- // The return value is a row as represented in the generic matrix code were the rightmost bits represent the lower columns and zeroes represent non-depressed keys while ones represent depressed keys.
- // the pins connected to eact columns are sequential, but in reverse order, and counting from zero down (col 5 -> GPIO04, col6 -> GPIO03 and so on).
- data |= ( port0 & 0x01 ) << 4;
- data |= ( port0 & 0x02 ) << 2;
- data |= ( port0 & 0x04 );
- data |= ( port0 & 0x08 ) >> 2;
- data |= ( port0 & 0x10 ) >> 4;
-
- tca9555_status = I2C_STATUS_SUCCESS;
- out:
- i2c_stop();
-
- return data;
+ tca9555_status = i2c_readReg(I2C_ADDR, IREGP0, port0, 1, I2C_TIMEOUT);
+ if (tca9555_status) { // if there was an error
+ // do nothing
+ return 0;
+ } else {
+ uint8_t port0 = ports[0];
+ uint8_t port1 = ports[1];
+
+ // We read all the pins on GPIOA.
+ // The initial state was all ones and any depressed key at a given column for the currently selected row will have its bit flipped to zero.
+ // The return value is a row as represented in the generic matrix code were the rightmost bits represent the lower columns and zeroes represent non-depressed keys while ones represent depressed keys.
+ // the pins connected to eact columns are sequential, but in reverse order, and counting from zero down (col 5 -> GPIO04, col6 -> GPIO03 and so on).
+ data |= ( port0 & 0x01 ) << 4;
+ data |= ( port0 & 0x02 ) << 2;
+ data |= ( port0 & 0x04 );
+ data |= ( port0 & 0x08 ) >> 2;
+ data |= ( port0 & 0x10 ) >> 4;
+
+ tca9555_status = I2C_STATUS_SUCCESS;
+ return data;
+ }
}
}
}
@@ 256,20 244,13 @@ static void select_row(uint8_t row) {
case 4: port1 &= ~(1 << 0); break;
case 5: port1 &= ~(1 << 1); break;
case 6: port1 &= ~(1 << 2); break;
- case 7: port1 &= ~(1 << 3); break;
+ case 7: port0 &= ~(1 << 5); break;
default: break;
}
+ tca9555_status = i2c_writeReg(I2C_ADDR, OREGP1, port1, 2, I2C_TIMEOUT);
// Select the desired row by writing a byte for the entire GPIOB bus where only the bit representing the row we want to select is a zero (write instruction) and every other bit is a one.
// Note that the row - MATRIX_ROWS_PER_SIDE reflects the fact that being on the right hand, the columns are numbered from MATRIX_ROWS_PER_SIDE to MATRIX_ROWS, but the pins we want to write to are indexed from zero up on the GPIOB bus.
- tca9555_status = i2c_start(I2C_ADDR_WRITE, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_write(OREGP1, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- tca9555_status = i2c_write(port1, I2C_TIMEOUT);
- if (tca9555_status) goto out;
- out:
- i2c_stop();
}
}
}