michaelh/zephyr
1
0
Fork 0
Code Releases Activity

drivers/gpio: pcal9535a: fix i2c write

Browse source 
writing to both port registers of pcal9535a
was broken

fixes #17625

Signed-off-by: Chris Schramm <schramm@makaio.com>
This commit is contained in:
Chris Schramm 2019-08-30 17:46:26 +02:00 • committed by Maureen Helm
commit ed9c1ce55d
1 changed files with 6 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

8
drivers/gpio/gpio_pcal9535a.c
View file

@ -129,12 +129,16 @@ static int write_port_regs(struct device *dev, u8_t reg,
"0x%X", i2c_addr, reg, buf->byte[0], (reg + 1), "0x%X", i2c_addr, reg, buf->byte[0], (reg + 1),
buf->byte[1]); buf->byte[1]);
ret = i2c_burst_write(i2c_master, i2c_addr, reg, buf->byte, 2); ret = i2c_reg_write_byte(i2c_master, i2c_addr, reg, buf->byte[0]);
if (ret) { if (ret) {
LOG_ERR("PCAL9535A[0x%X]: error writing from register 0x%X " LOG_ERR("PCAL9535A[0x%X]: error writing from register 0x%X "
"(%d)", i2c_addr, reg, ret); "(%d)", i2c_addr, reg, ret);
} }
ret = i2c_reg_write_byte(i2c_master, i2c_addr, reg+1, buf->byte[1]);
if (ret) {
LOG_ERR("PCAL9535A[0x%X]: error writing from register 0x%X "
"(%d)", i2c_addr, reg, ret);
}
return ret; return ret;
} }