diff options
| author | Damien George | 2019-03-01 16:15:14 +1100 |
|---|---|---|
| committer | Damien George | 2019-03-01 16:15:14 +1100 |
| commit | f8f2724297b2c3e87e074feddfac26f3ce46ae92 (patch) | |
| tree | a08abf24eb41dc7971a92ef7424947b4d0c66029 /ports | |
| parent | 47e551ba59b1bb8393b649b4a5f51f1c83d889b6 (diff) | |
stm32/qspi: Enable sample shift and disable timeout counter.
This makes the QSPI more robust, in particular the timeout counter should
not be used with memory mapped mode (see F7 errata).
Diffstat (limited to 'ports')
| -rw-r--r-- | ports/stm32/qspi.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/ports/stm32/qspi.c b/ports/stm32/qspi.c index 986206891..469858c68 100644 --- a/ports/stm32/qspi.c +++ b/ports/stm32/qspi.c @@ -55,8 +55,8 @@ void qspi_init(void) { #if defined(QUADSPI_CR_DFM_Pos) | 0 << QUADSPI_CR_DFM_Pos // dual-flash mode disabled #endif - | 0 << QUADSPI_CR_SSHIFT_Pos // no sample shift - | 1 << QUADSPI_CR_TCEN_Pos // timeout counter enabled + | 1 << QUADSPI_CR_SSHIFT_Pos // do sample shift + | 0 << QUADSPI_CR_TCEN_Pos // timeout counter disabled (see F7 errata) | 1 << QUADSPI_CR_EN_Pos // enable the peripheral ; @@ -71,7 +71,6 @@ void qspi_memory_map(void) { // Enable memory-mapped mode QUADSPI->ABR = 0; // disable continuous read mode - QUADSPI->LPTR = 100; // to tune QUADSPI->CCR = 0 << QUADSPI_CCR_DDRM_Pos // DDR mode disabled | 0 << QUADSPI_CCR_SIOO_Pos // send instruction every transaction |