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samd/boards/SAMD21_XPLAINED_PRO: Use the SPI flash for the file system.

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The initial settings did not support it.  The change required to add a
dedicated handling of the Adesto 1MByte flash of the XPLAINED PRO board,
which does not support the sfdp feature.

Fixes the ID check of the Adesto/Renesas 1MByte flash.

Signed-off-by: robert-hh <robert@hammelrath.com>
This commit is contained in:
robert-hh
2024-09-24 17:09:06 +02:00
committed by Damien George
parent 85de67f55d
commit 4a159d16fe
4 changed files with 42 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
ports/samd/boards/SAMD21_XPLAINED_PRO/mpconfigboard.h
View File

@@ -2,3 +2,7 @@
#define MICROPY_HW_MCU_NAME "SAMD21J18A"
#define MICROPY_HW_XOSC32K (1)
#define MICROPY_HW_SPIFLASH (1)
#define MICROPY_HW_SPIFLASH_ID (5)
#define MICROPY_HW_SPIFLASH_BAUDRATE (12000000)

2
ports/samd/boards/SAMD21_XPLAINED_PRO/mpconfigboard.mk
View File

@@ -2,3 +2,5 @@ MCU_SERIES = SAMD21
CMSIS_MCU = SAMD21J18A
LD_FILES = boards/samd21x18a.ld sections.ld
TEXT0 = 0x2000
MICROPY_HW_CODESIZE ?= 248K

4
ports/samd/boards/SAMD21_XPLAINED_PRO/pins.csv
View File

@@ -53,3 +53,7 @@ USB_DP,PA25
SWCLK,PA30
SWDIO,PA31
FLASH_MOSI,PB22
FLASH_MISO,PB16
FLASH_SCK,PB23
FLASH_CS,PA13
1 # EXT1
53 FLASH_CS,PA13
54
55
56
57
58
59

27
ports/samd/samd_spiflash.c
View File

@@ -45,6 +45,7 @@ const uint8_t _COMMANDS_32BIT[] = {0x13, 0x12, 0x21}; // READ, PROGRAM_PAGE, ER
#define COMMAND_JEDEC_ID (0x9F)
#define COMMAND_READ_STATUS (0x05)
#define COMMAND_WRITE_SR1 (0x01)
#define COMMAND_WRITE_ENABLE (0x06)
#define COMMAND_READ_SFDP (0x5A)
#define PAGE_SIZE (256)
@@ -88,7 +89,7 @@ static void wait(spiflash_obj_t *self) {
mp_hal_pin_write(self->cs, 0);
spi_transfer((mp_obj_base_t *)self->spi, 2, msg, msg);
mp_hal_pin_write(self->cs, 1);
} while (msg[1] != 0 && timeout-- > 0);
} while ((msg[1] & 1) != 0 && timeout-- > 0);
}
static void get_id(spiflash_obj_t *self, uint8_t id[3]) {
@@ -123,6 +124,17 @@ static void write_enable(spiflash_obj_t *self) {
mp_hal_pin_write(self->cs, 1);
}
// Write status register 1
static void write_sr1(spiflash_obj_t *self, uint8_t value) {
uint8_t msg[2];
msg[0] = COMMAND_WRITE_SR1;
msg[1] = value;
mp_hal_pin_write(self->cs, 0);
spi_transfer(self->spi, 2, msg, NULL);
mp_hal_pin_write(self->cs, 1);
}
static void get_sfdp(spiflash_obj_t *self, uint32_t addr, uint8_t *buffer, int size) {
uint8_t dummy[1];
write_addr(self, COMMAND_READ_SFDP, addr);
@@ -155,19 +167,27 @@ static mp_obj_t spiflash_make_new(const mp_obj_type_t *type, size_t n_args, size
mp_hal_pin_write(self->cs, 1);
wait(self);
// Get the flash size from the device ID (default)
uint8_t id[3];
get_id(self, id);
bool read_sfdp = true;
if (id[1] == 0x84 && id[2] == 1) { // Adesto
self->size = 512 * 1024;
} else if (id[1] == 0x1f && id[2] == 1) { // Atmel / Renesas
} else if (id[0] == 0x1f && id[1] == 0x45 && id[2] == 1) { // Adesto/Renesas 8 MBit
self->size = 1024 * 1024;
read_sfdp = false;
self->sectorsize = 4096;
self->addr_is_32bit = false;
// Globally unlock the sectors, which are locked after power on.
write_enable(self);
write_sr1(self, 0);
} else {
self->size = 1 << id[2];
}
// Get the addr_is_32bit flag and the sector size
if (read_sfdp) {
uint8_t buffer[128];
get_sfdp(self, 0, buffer, 16); // get the header
int len = MIN(buffer[11] * 4, sizeof(buffer));
@@ -177,6 +197,7 @@ static mp_obj_t spiflash_make_new(const mp_obj_type_t *type, size_t n_args, size
self->sectorsize = 1 << buffer[28];
self->addr_is_32bit = ((buffer[2] >> 1) & 0x03) != 0;
}
}
self->commands = self->addr_is_32bit ? _COMMANDS_32BIT : _COMMANDS_24BIT;
return self;