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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2022/06/18 13:11:32 UTC
[GitHub] [incubator-nuttx] pkarashchenko commented on a diff in pull request #6468: Add I2C_M_NOSTART and I2C_M_NOSTOP support in esp32c3_i2c
pkarashchenko commented on code in PR #6468:
URL: https://github.com/apache/incubator-nuttx/pull/6468#discussion_r900892553
##########
arch/risc-v/src/esp32c3/esp32c3_i2c.c:
##########
@@ -1037,14 +1037,30 @@ static int esp32c3_i2c_transfer(struct i2c_master_s *dev,
esp32c3_i2c_init_clock(priv, msgs[i].frequency);
- /* Reset I2C trace logic */
+ if (msgs[i].flags & I2C_M_NOSTART)
Review Comment:
Optional
```suggestion
if ((msgs[i].flags & I2C_M_NOSTART) != 0)
```
##########
arch/risc-v/src/esp32c3/esp32c3_i2c.c:
##########
@@ -1037,14 +1037,30 @@ static int esp32c3_i2c_transfer(struct i2c_master_s *dev,
esp32c3_i2c_init_clock(priv, msgs[i].frequency);
- /* Reset I2C trace logic */
+ if (msgs[i].flags & I2C_M_NOSTART)
+ {
+ esp32c3_i2c_traceevent(priv, I2CEVENT_SENDBYTE, priv->bytes,
+ getreg32(I2C_SR_REG(priv->id)));
+ esp32c3_i2c_senddata(priv);
- esp32c3_i2c_tracereset(priv);
+ if (priv->bytes == msgs[i].length)
+ {
+ priv->i2cstate = I2CSTATE_STOP;
+ if (msgs[i].flags & I2C_M_NOSTOP)
+ priv->i2cstate = I2CSTATE_FINISH;
Review Comment:
Optionnal
```suggestion
if ((msgs[i].flags & I2C_M_NOSTOP) != 0)
{
priv->i2cstate = I2CSTATE_FINISH;
}
```
adding `{}` not optional
##########
arch/risc-v/src/esp32c3/esp32c3_i2c.c:
##########
@@ -1454,6 +1470,8 @@ static inline void esp32c3_i2c_process(struct esp32c3_i2c_priv_s *priv,
if (priv->bytes == msg->length)
{
priv->i2cstate = I2CSTATE_STOP;
+ if (msg->flags & I2C_M_NOSTOP)
+ priv->i2cstate = I2CSTATE_FINISH;
Review Comment:
```suggestion
if (msg->flags & I2C_M_NOSTOP)
{
priv->i2cstate = I2CSTATE_FINISH;
}
```
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