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drivers: i2c: sam0 Fix i2c NACK on receive #38881

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Merged
merged 1 commit into from
Jan 1, 2022
Merged

drivers: i2c: sam0 Fix i2c NACK on receive #38881

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4 changes: 2 additions & 2 deletions drivers/i2c/i2c_sam0.c
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Original file line number Diff line number Diff line change
Expand Up @@ -162,7 +162,7 @@ static void i2c_sam0_isr(const struct device *dev)
data->msg.buffer++;
data->msg.size--;
} else if (status & SERCOM_I2CM_INTFLAG_SB) {
if (!continue_next) {
if (!continue_next && (data->msg.size == 1)) {
/*
* If this is the last byte, then prepare for an auto
* NACK before doing the actual read. This does not
Expand All @@ -175,7 +175,7 @@ static void i2c_sam0_isr(const struct device *dev)
data->msg.buffer++;
data->msg.size--;

if (!continue_next) {
if (!continue_next && !data->msg.size) {
i2c->INTENCLR.reg = SERCOM_I2CM_INTENCLR_MASK;
k_sem_give(&data->sem);
return;
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