From b5e80fafb2d5ef69fd80dbc6d7e839ffaa5a0f98 Mon Sep 17 00:00:00 2001 From: iabdalkader Date: Fri, 29 Nov 2024 16:56:20 +0100 Subject: [PATCH] drivers/memory/spiflash: Add a config option to soft-reset SPI flash. Add a compile-time config option to soft-reset SPI flash on init. This puts the flash in a known state on reset. Note this option is disabled by default. Signed-off-by: iabdalkader --- drivers/memory/spiflash.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/memory/spiflash.c b/drivers/memory/spiflash.c index e66153636..773334e16 100644 --- a/drivers/memory/spiflash.c +++ b/drivers/memory/spiflash.c @@ -44,6 +44,8 @@ #define CMD_RD_DEVID (0x9f) #define CMD_CHIP_ERASE (0xc7) #define CMD_C4READ (0xeb) +#define CMD_RSTEN (0x66) +#define CMD_RESET (0x99) // 32 bit addressing commands #define CMD_WRITE_32 (0x12) @@ -180,6 +182,14 @@ void mp_spiflash_init(mp_spiflash_t *self) { // Ensure SPI flash is out of sleep mode mp_spiflash_deepsleep_internal(self, 0); + // Software reset. + #if MICROPY_HW_SPIFLASH_SOFT_RESET + mp_spiflash_write_cmd(self, CMD_RSTEN); + mp_spiflash_write_cmd(self, CMD_RESET); + mp_spiflash_wait_wip0(self); + mp_hal_delay_ms(1); + #endif + #if defined(CHECK_DEVID) // Validate device id uint32_t devid;