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notified the status of the transaction to Failed if the queue is full when submitting

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This commit is contained in:
Antoine Drouin
2010-09-14 14:26:49 +00:00
parent 02102ec437
commit 7a47c8877f
1 changed files with 7 additions and 7 deletions
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sw/airborne/arm7/i2c_hw.c
+7 -7
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@@ -323,21 +323,21 @@ bool_t i2c_submit(struct i2c_periph* p, struct i2c_transaction* t) {
uint8_t idx;
idx = p->trans_insert_idx + 1;
if (idx >= I2C_TRANSACTION_QUEUE_LEN) idx = 0;
if (idx == p->trans_extract_idx)
return FALSE; // queue full
if (idx == p->trans_extract_idx) {
t->status = I2CTransFailed;
return FALSE; /* queue full */
}
t->status = I2CTransPending;
// disable irq
int_disable();
p->trans[p->trans_insert_idx] = t;
p->trans_insert_idx = idx;
/* if peripheral is idle, start the transaction */
if (p->status == I2CIdle)
I2cSendStart(p);
/* else it will be started by the interrupt handler when the previous transactions completes */
// enable irq
/* else it will be started by the interrupt handler */
/* when the previous transactions completes */
int_enable();
return TRUE;
}