diff options
| author | Damien George <damien.p.george@gmail.com> | 2019-03-01 16:15:14 +1100 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2019-03-01 16:15:14 +1100 |
| commit | f8f2724297b2c3e87e074feddfac26f3ce46ae92 (patch) | |
| tree | a08abf24eb41dc7971a92ef7424947b4d0c66029 | |
| 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).
| -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 |