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bsp/atsam: Add timeout to QSPI send command

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This commit is contained in:
Alexander Krutwig
2016-08-10 10:32:39 +02:00
committed by Sebastian Huber
parent 5d1fc66ce7
commit fea392a350
1 changed files with 16 additions and 1 deletions
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17
c/src/lib/libbsp/arm/atsam/libraries/libchip/source/qspi.c
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@@ -590,6 +590,7 @@ QspidStatus_t QSPI_SendCommand(Qspid_t *pQspid, uint8_t const KeepCfg)
QspiInstFrame_t *const pFrame = pQspid->pQspiFrame;
QspiMemCmd_t pCommand = pQspid->qspiCommand;
QspidStatus_t Status = QSPI_UNKNOWN_ERROR;
uint32_t timeout = 15000;
if (pFrame->InstFrame.bm.bAddrEn)
QSPI_SetInstAddr(pQspid->pQspiHw, pFrame->Addr);
@@ -600,7 +601,21 @@ QspidStatus_t QSPI_SendCommand(Qspid_t *pQspid, uint8_t const KeepCfg)
memory_sync();
while (!(pQspid->pQspiHw->QSPI_SR & QSPI_SR_INSTRE));
/*
* FIXME: Timeout has been introduced due to a problem that was detected
* when QSPI_SR_INSTRE was not detected and the function is stuck in an
* endless loop. This is still an open issue.
* peripheral clock: 50Mhz -> 20 ns period time.
* timeout: set to 15000 loop cycles => 300000 ns.
* with loop instructions, the delay increases to 1ms altogether.
*/
while (!(pQspid->pQspiHw->QSPI_SR & QSPI_SR_INSTRE) && timeout > 0) {
--timeout;
}
if (timeout == 0) {
Status = QSPI_WRITE_ERROR;
}
// poll CR reg to know status if instruction has end
if (!KeepCfg)