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| author | Joel Challis <git@zvecr.com> | 2019-12-03 19:39:21 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-12-03 19:39:21 +0000 |
| commit | 1718dfa658dbe8ad144100b561794c5596ac5f08 (patch) | |
| tree | b6252940f7b149efb3fd65bea40b4d353e01e973 /drivers/gpio/pca9555.c | |
| parent | 1c8208ad9a0d1a8cd423aea3ffb0aa5e370e1541 (diff) | |
| download | qmk_firmware-1718dfa658dbe8ad144100b561794c5596ac5f08.tar.gz qmk_firmware-1718dfa658dbe8ad144100b561794c5596ac5f08.zip | |
Increase matrix scanning speed on xd84 (#7517)
* Increase matrix scanning speed
* Fix func name in failure output
Diffstat (limited to 'drivers/gpio/pca9555.c')
| -rw-r--r-- | drivers/gpio/pca9555.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpio/pca9555.c b/drivers/gpio/pca9555.c index 496bbca04e..02b5abbdde 100644 --- a/drivers/gpio/pca9555.c +++ b/drivers/gpio/pca9555.c @@ -76,3 +76,20 @@ uint8_t pca9555_readPins(uint8_t slave_addr, uint8_t port) { } return data; } + +uint16_t pca9555_readAllPins(uint8_t slave_addr) { + uint8_t addr = SLAVE_TO_ADDR(slave_addr); + + typedef union { + uint8_t u8[2]; + uint16_t u16; + } data16; + + data16 data; + + i2c_status_t ret = i2c_readReg(addr, CMD_INPUT_0, &data.u8[0], sizeof(data), TIMEOUT); + if (ret != I2C_STATUS_SUCCESS) { + print("pca9555_readAllPins::FAILED\n"); + } + return data.u16; +} |