patrick/zephyr
1
0
Fork 0
Code Issues Pull requests Actions 8 Packages Projects Releases Wiki Activity

emul: Correct emul_sbs_gauge to allow SBS word r/w

Browse source 
Fix SBS I2C transfer emulation to accept reads and writes of 16 bit words
as defined by the SBS spec. This change is tested by a following commit
that implements writing and subsequently reading a written SBS property.

Signed-off-by: Aaron Massey <aaronmassey@google.com>
This commit is contained in:
Aaron Massey 2022-12-02 09:50:34 -07:00 committed by Carles Cufí
parent f5d269538b
commit 48d5b6c1f1
1 changed files with 8 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
subsys/emul/i2c/emul_sbs_gauge.c
View file

@ -115,17 +115,22 @@ static int sbs_gauge_emul_transfer_i2c(const struct emul *target, struct i2c_msg
/* Return before writing bad value to message buffer */
return rc;
}
msgs->buf[0] = val;
/* SBS uses SMBus, which sends data in little-endian format. */
sys_put_le16(val, msgs->buf);
break;
default:
LOG_ERR("Unexpected msg1 length %d", msgs->len);
return -EIO;
}
} else {
if (msgs->len != 1) {
/* We write a word (2 bytes by the SBS spec) */
if (msgs->len != 2) {
LOG_ERR("Unexpected msg1 length %d", msgs->len);
}
rc = emul_sbs_gauge_reg_write(target, reg, msgs->buf[0]);
uint16_t *value = (uint16_t *)msgs->buf;
rc = emul_sbs_gauge_reg_write(target, reg, *value);
}
break;
default: