diff options
| author | iabdalkader <i.abdalkader@gmail.com> | 2022-04-13 12:41:28 +0200 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2022-04-26 22:33:05 +1000 |
| commit | 32914c53ef2b5ec78844427c7221ee77d67035ac (patch) | |
| tree | 9f199118a6acf10f93b3a3ac5d2ce3cc58d22ce3 | |
| parent | 5974ac256b04a86e1ec88fd98cc8d68243f9d6be (diff) | |
stm32/qspi: Workaround for SR set immediately after setting AR.
See issue #5441. This issue is now reproducible on the Arduino Portenta
H747, QSPI flash PN MX25L12833F.
| -rw-r--r-- | ports/stm32/qspi.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/ports/stm32/qspi.c b/ports/stm32/qspi.c index d741cf9aa..d32bd4dcf 100644 --- a/ports/stm32/qspi.c +++ b/ports/stm32/qspi.c @@ -354,6 +354,14 @@ STATIC void qspi_read_cmd_qaddr_qdata(void *self_in, uint8_t cmd, uint32_t addr, QUADSPI->ABR = 0; // alternate byte: disable continuous read mode QUADSPI->AR = addr; // address to read from + #if defined(STM32H7) + // Workaround for SR getting set immediately after setting the address. + if (QUADSPI->SR & 0x01) { + QUADSPI->FCR |= QUADSPI_FCR_CTEF; + QUADSPI->AR = addr; // address to read from + } + #endif + // Read in the data 4 bytes at a time if dest is aligned if (((uintptr_t)dest & 3) == 0) { while (len >= 4) { |