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Merge pull request #627 from tannewt/qspi

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Add QSPI support for the SAMD51
This commit is contained in:
Dan Halbert 2018-02-20 10:11:35 -05:00 committed by GitHub
commit 06d3c5aed7
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GPG Key ID: 4AEE18F83AFDEB23
23 changed files with 586 additions and 227 deletions
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5
ports/atmel-samd/Makefile
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@ -252,7 +252,10 @@ ifeq ($(INTERNAL_FLASH_FILESYSTEM),1)
SRC_C += internal_flash.c
endif
ifeq ($(SPI_FLASH_FILESYSTEM),1)
SRC_C += spi_flash.c
SRC_C += external_flash/external_flash.c external_flash/spi_flash.c
endif
ifeq ($(QSPI_FLASH_FILESYSTEM),1)
SRC_C += external_flash/external_flash.c external_flash/qspi_flash.c
endif
SRC_COMMON_HAL = \

6
ports/atmel-samd/boards/circuitplayground_express/mpconfigboard.h
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@ -38,7 +38,7 @@
#define SPEAKER_ENABLE_PIN (&pin_PA30)
#include "spi_flash.h"
#include "external_flash/external_flash.h"
// If you change this, then make sure to update the linker scripts as well to
// make sure you don't overwrite code.
@ -47,8 +47,8 @@
#define BOARD_FLASH_SIZE (0x00040000 - 0x2000 - CIRCUITPY_INTERNAL_NVM_SIZE)
#include "flash_S25FL216K.h"
#include "flash_GD25Q16C.h"
#include "external_flash/devices/S25FL216K.h"
#include "external_flash/devices/GD25Q16C.h"
#define CALIBRATE_CRYSTALLESS 1

6
ports/atmel-samd/boards/feather_m0_express/mpconfigboard.h
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@ -31,7 +31,7 @@
#define MICROPY_PORT_B ( 0 )
#define MICROPY_PORT_C ( 0 )
#include "spi_flash.h"
#include "external_flash/external_flash.h"
// If you change this, then make sure to update the linker scripts as well to
// make sure you don't overwrite code.
@ -40,5 +40,5 @@
#define BOARD_FLASH_SIZE (0x00040000 - 0x2000 - CIRCUITPY_INTERNAL_NVM_SIZE)
#include "flash_S25FL216K.h"
#include "flash_GD25Q16C.h"
#include "external_flash/devices/S25FL216K.h"
#include "external_flash/devices/GD25Q16C.h"

4
ports/atmel-samd/boards/feather_m0_supersized/mpconfigboard.h
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@ -33,7 +33,7 @@
#define MICROPY_PORT_B ( 0 )
#define MICROPY_PORT_C ( 0 )
#include "spi_flash.h"
#include "external_flash/external_flash.h"
// If you change this, then make sure to update the linker scripts as well to
// make sure you don't overwrite code.
@ -42,4 +42,4 @@
#define BOARD_FLASH_SIZE (0x00040000 - 0x2000 - CIRCUITPY_INTERNAL_NVM_SIZE)
#include "flash_S25FL064L.h"
#include "external_flash/devices/S25FL064L.h"

8
ports/atmel-samd/boards/itsybitsy_m0/mpconfigboard.h
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@ -33,7 +33,7 @@
#define MICROPY_PORT_B (PORT_PB22 | PORT_PB23 | PORT_PB03 )
#define MICROPY_PORT_C (0)
#include "spi_flash.h"
#include "external_flash/external_flash.h"
// If you change this, then make sure to update the linker scripts as well to
// make sure you don't overwrite code.
@ -41,6 +41,6 @@
#define CIRCUITPY_INTERNAL_NVM_SIZE 0
#define BOARD_FLASH_SIZE (0x00040000 - 0x2000 - CIRCUITPY_INTERNAL_NVM_SIZE)
//#include "flash_S25FL216K.h"
#include "flash_W25Q80DV.h"
//#include "flash_GD25Q16C.h"
//#include "external_flash/devices/S25FL216K.h"
#include "external_flash/devices/W25Q80DV.h"
//#include "external_flash/devices/GD25Q16C.h"

6
ports/atmel-samd/boards/metro_m0_express/mpconfigboard.h
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@ -34,7 +34,7 @@
#define MICROPY_PORT_B (PORT_PB03 | PORT_PB22 | PORT_PB23)
#define MICROPY_PORT_C (0)
#include "spi_flash.h"
#include "external_flash/external_flash.h"
// If you change this, then make sure to update the linker scripts as well to
// make sure you don't overwrite code.
@ -43,5 +43,5 @@
#define BOARD_FLASH_SIZE (0x00040000 - 0x2000 - CIRCUITPY_INTERNAL_NVM_SIZE)
#include "flash_S25FL216K.h"
#include "flash_GD25Q16C.h"
#include "external_flash/devices/S25FL216K.h"
#include "external_flash/devices/GD25Q16C.h"

10
ports/atmel-samd/boards/metro_m4_express/mpconfigboard.h
View File

@ -33,14 +33,14 @@
#define SPI_FLASH_DIPO 3 // same as MISO pad
// These are pins not to reset.
#define MICROPY_PORT_A (PORT_PA27)
#define MICROPY_PORT_B (PORT_PB06 | PORT_PB08 | PORT_PB09 | PORT_PB10 | PORT_PB11 | PORT_PB17)
#define MICROPY_PORT_A (PORT_PA08 | PORT_PA09 | PORT_PA10 | PORT_PA11 | PORT_PA27)
#define MICROPY_PORT_B (PORT_PB10 | PORT_PB11 | PORT_PB17)
#define MICROPY_PORT_C (0)
#define MICROPY_PORT_D (0)
#define AUTORESET_DELAY_MS 500
#include "spi_flash.h"
#include "external_flash/external_flash.h"
// If you change this, then make sure to update the linker scripts as well to
// make sure you don't overwrite code
@ -49,5 +49,5 @@
#define BOARD_FLASH_SIZE (FLASH_SIZE - 0x4000 - CIRCUITPY_INTERNAL_NVM_SIZE)
#include "flash_S25FL216K.h"
#include "flash_GD25Q16C.h"
#include "external_flash/devices/S25FL216K.h"
#include "external_flash/devices/GD25Q16C.h"

2
ports/atmel-samd/boards/metro_m4_express/mpconfigboard.mk
View File

@ -4,7 +4,7 @@ USB_PID = 0x8021
USB_PRODUCT = "Metro M4 Express"
USB_MANUFACTURER = "Adafruit Industries LLC"
SPI_FLASH_FILESYSTEM = 1
QSPI_FLASH_FILESYSTEM = 1
CHIP_VARIANT = SAMD51J19A
CHIP_FAMILY = samd51

5
ports/atmel-samd/boards/trinket_m0_haxpress/mpconfigboard.h
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@ -40,7 +40,7 @@
#define CALIBRATE_CRYSTALLESS 1
#include "spi_flash.h"
#include "external_flash/external_flash.h"
// If you change this, then make sure to update the linker scripts as well to
// make sure you don't overwrite code.
@ -48,5 +48,4 @@
#define CIRCUITPY_INTERNAL_NVM_SIZE 0
#define BOARD_FLASH_SIZE (0x00040000 - 0x2000 - CIRCUITPY_INTERNAL_NVM_SIZE)
#include "flash_W25Q32BV.h"
#include "external_flash/devices/W25Q32BV.h"

6
ports/atmel-samd/boards/ugame10/mpconfigboard.h
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@ -33,7 +33,7 @@
#define CALIBRATE_CRYSTALLESS 1
#include "spi_flash.h"
#include "external_flash/external_flash.h"
// If you change this, then make sure to update the linker scripts as well to
// make sure you don't overwrite code.
@ -41,5 +41,5 @@
#define CIRCUITPY_INTERNAL_NVM_SIZE 0
#define BOARD_FLASH_SIZE (0x00040000 - 0x2000 - CIRCUITPY_INTERNAL_NVM_SIZE)
//#include "flash_W25Q32BV.h"
#include "flash_S25FL216K.h"
//#include "external_flash/devices/W25Q32BV.h"
#include "external_flash/devices/S25FL216K.h"

41
ports/atmel-samd/external_flash/common_commands.h Normal file
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@ -0,0 +1,41 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_ATMEL_SAMD_EXTERNAL_FLASH_COMMON_COMMANDS_H
#define MICROPY_INCLUDED_ATMEL_SAMD_EXTERNAL_FLASH_COMMON_COMMANDS_H
#define CMD_READ_JEDEC_ID 0x9f
#define CMD_READ_DATA 0x03
#define CMD_SECTOR_ERASE 0x20
// #define CMD_SECTOR_ERASE CMD_READ_JEDEC_ID
#define CMD_DISABLE_WRITE 0x04
#define CMD_ENABLE_WRITE 0x06
#define CMD_PAGE_PROGRAM 0x02
// #define CMD_PAGE_PROGRAM CMD_READ_JEDEC_ID
#define CMD_READ_STATUS 0x05
#define CMD_WRITE_STATUS_BYTE1 0x01
#define CMD_QUAD_READ 0x6b
#endif // MICROPY_INCLUDED_ATMEL_SAMD_EXTERNAL_FLASH_COMMON_COMMANDS_H

0
ports/atmel-samd/boards/flash_AT25DF081A.h → ports/atmel-samd/external_flash/devices/AT25DF081A.h
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0
ports/atmel-samd/boards/flash_GD25Q16C.h → ports/atmel-samd/external_flash/devices/GD25Q16C.h
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0
ports/atmel-samd/boards/flash_S25FL064L.h → ports/atmel-samd/external_flash/devices/S25FL064L.h
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54
ports/atmel-samd/external_flash/devices/S25FL116K.h Normal file
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@ -0,0 +1,54 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_ATMEL_SAMD_BOARD_FLASH_S25FL116K_H
#define MICROPY_INCLUDED_ATMEL_SAMD_BOARD_FLASH_S25FL116K_H
// Settings for the Cypress (was Spansion) S25FL116K 2MiB SPI flash.
// Datasheet: http://www.cypress.com/file/196886/download
// The total flash size in bytes.
#define SPI_FLASH_TOTAL_SIZE (1 << 21) // 2 MiB
// The size of the smallest erase unit thats erased with command 0x20.
#define SPI_FLASH_ERASE_SIZE (1 << 12) // 4 KiB
// The size of a page that is programmed with page program command 0x02.
#define SPI_FLASH_PAGE_SIZE (256) // 256 bytes
// These are the first three response bytes to the JEDEC ID command 0x9f that is
// used to confirm we're talking to the flash we expect.
#ifndef SPI_FLASH_JEDEC_MANUFACTURER
#define SPI_FLASH_JEDEC_MANUFACTURER 0x01
#define SPI_FLASH_SECTOR_PROTECTION false
#else
#define SPI_FLASH_JEDEC_MANUFACTURER_2 0x01
#define SPI_FLASH_SECTOR_PROTECTION_2 false
#endif
#define SPI_FLASH_JEDEC_MEMORY_TYPE 0x40
#define SPI_FLASH_JEDEC_CAPACITY 0x15
#endif // MICROPY_INCLUDED_ATMEL_SAMD_BOARD_FLASH_S25FL216K_H

0
ports/atmel-samd/boards/flash_S25FL216K.h → ports/atmel-samd/external_flash/devices/S25FL216K.h
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0
ports/atmel-samd/boards/flash_W25Q32BV.h → ports/atmel-samd/external_flash/devices/W25Q32BV.h
View File

0
ports/atmel-samd/boards/flash_W25Q80DV.h → ports/atmel-samd/external_flash/devices/W25Q80DV.h
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257
ports/atmel-samd/spi_flash.c → ports/atmel-samd/external_flash/external_flash.c
View File

@ -23,11 +23,13 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "spi_flash.h"
#include "external_flash.h"
#include <stdint.h>
#include <string.h>
#include "external_flash/spi_flash_api.h"
#include "external_flash/common_commands.h"
#include "extmod/vfs.h"
#include "extmod/vfs_fat.h"
#include "py/misc.h"
@ -46,17 +48,6 @@
#define NO_SECTOR_LOADED 0xFFFFFFFF
#define CMD_READ_JEDEC_ID 0x9f
#define CMD_READ_DATA 0x03
#define CMD_SECTOR_ERASE 0x20
// #define CMD_SECTOR_ERASE CMD_READ_JEDEC_ID
#define CMD_DISABLE_WRITE 0x04
#define CMD_ENABLE_WRITE 0x06
#define CMD_PAGE_PROGRAM 0x02
// #define CMD_PAGE_PROGRAM CMD_READ_JEDEC_ID
#define CMD_READ_STATUS 0x05
#define CMD_WRITE_STATUS_BYTE1 0x01
static bool spi_flash_is_initialised = false;
struct spi_m_sync_descriptor spi_flash_desc;
@ -71,46 +62,20 @@ static uint32_t dirty_mask;
// Address of the scratch flash sector.
#define SCRATCH_SECTOR (SPI_FLASH_TOTAL_SIZE - SPI_FLASH_ERASE_SIZE)
// Enable the flash over SPI.
static void flash_enable(void) {
gpio_set_pin_level(SPI_FLASH_CS_PIN, false);
}
// Disable the flash over SPI.
static void flash_disable(void) {
gpio_set_pin_level(SPI_FLASH_CS_PIN, true);
}
// Wait until both the write enable and write in progress bits have cleared.
static bool wait_for_flash_ready(void) {
uint8_t read_status_request[2] = {CMD_READ_STATUS, 0x00};
uint8_t read_status_response[2] = {0x00, 0x00};
struct spi_xfer read_status_xfer = {read_status_request, read_status_response, 2};
int32_t status;
uint8_t read_status_response[1] = {0x00};
bool ok = true;
// Both the write enable and write in progress bits should be low.
do {
flash_enable();
status = spi_m_sync_transfer(&spi_flash_desc, &read_status_xfer);
flash_disable();
} while (status >= 0 && (read_status_response[1] & 0x3) != 0);
return status >= 0; // status is number of chars read or a negative error code.
ok = spi_flash_read_command(CMD_READ_STATUS, read_status_response, 1);
} while (ok && (read_status_response[0] & 0x3) != 0);
return ok;
}
// Turn on the write enable bit so we can program and erase the flash.
static bool write_enable(void) {
flash_enable();
uint8_t enable_write_request[1] = {CMD_ENABLE_WRITE};
struct spi_xfer enable_write_xfer = {enable_write_request, 0, 1};
int32_t status = spi_m_sync_transfer(&spi_flash_desc, &enable_write_xfer);
flash_disable();
return status >= 0; // status is number of chars read or a negative error code.
}
// Pack the low 24 bits of the address into a uint8_t array.
static void address_to_bytes(uint32_t address, uint8_t* bytes) {
bytes[0] = (address >> 16) & 0xff;
bytes[1] = (address >> 8) & 0xff;
bytes[2] = address & 0xff;
return spi_flash_command(CMD_ENABLE_WRITE);
}
// Read data_length's worth of bytes starting at address into data.
@ -121,19 +86,7 @@ static bool read_flash(uint32_t address, uint8_t* data, uint32_t data_length) {
if (!wait_for_flash_ready()) {
return false;
}
// We can read as much as we want sequentially.
uint8_t read_data_request[4] = {CMD_READ_DATA, 0x00, 0x00, 0x00};
struct spi_xfer read_data_xfer = {read_data_request, 0, 4};
// Write the SPI flash read address into the bytes following the command byte.
address_to_bytes(address, read_data_request + 1);
flash_enable();
int32_t status = spi_m_sync_transfer(&spi_flash_desc, &read_data_xfer);
struct spi_xfer read_data_buffer_xfer = {0, data, data_length};
if (status >= 0) {
status = spi_m_sync_transfer(&spi_flash_desc, &read_data_buffer_xfer);
}
flash_disable();
return status >= 0;
return spi_flash_read_data(address, data, data_length);
}
// Writes data_length's worth of bytes starting at address from data. Assumes
@ -162,29 +115,9 @@ static bool write_flash(uint32_t address, const uint8_t* data, uint32_t data_len
if (!wait_for_flash_ready() || !write_enable()) {
return false;
}
int32_t status;
#ifdef SPI_FLASH_SECTOR_PROTECTION
// Print out the protection status.
// uint8_t protect_check[5] = {0x3C, 0x00, 0x00, 0x00, 0x00};
// address_to_bytes(address + bytes_written, protect_check + 1);
// flash_enable();
// status = spi_write_buffer_wait(&spi_flash_desc, protect_check, 5);
// flash_disable();
#endif
flash_enable();
uint8_t page_program_request[4] = {CMD_PAGE_PROGRAM, 0x00, 0x00, 0x00};
// Write the SPI flash write address into the bytes following the command byte.
address_to_bytes(address + bytes_written, page_program_request + 1);
struct spi_xfer page_program_xfer = {page_program_request, 0, 4};
status = spi_m_sync_transfer(&spi_flash_desc, &page_program_xfer);
if (status >= 0) {
struct spi_xfer write_data_buffer_xfer = {(uint8_t*) data + bytes_written, 0, SPI_FLASH_PAGE_SIZE};
status = spi_m_sync_transfer(&spi_flash_desc, &write_data_buffer_xfer);
}
flash_disable();
if (status < 0) {
if (!spi_flash_write_data(address + bytes_written, (uint8_t*) data + bytes_written,
SPI_FLASH_PAGE_SIZE)) {
return false;
}
}
@ -228,13 +161,8 @@ static bool erase_sector(uint32_t sector_address) {
return false;
}
uint8_t erase_request[4] = {CMD_SECTOR_ERASE, 0x00, 0x00, 0x00};
address_to_bytes(sector_address, erase_request + 1);
struct spi_xfer erase_xfer = {erase_request, 0, 4};
flash_enable();
int32_t status = spi_m_sync_transfer(&spi_flash_desc, &erase_xfer);
flash_disable();
return status >= 0;
spi_flash_sector_command(CMD_SECTOR_ERASE, sector_address);
return true;
}
// Sector is really 24 bits.
@ -252,45 +180,12 @@ static bool copy_block(uint32_t src_address, uint32_t dest_address) {
return true;
}
void spi_flash_init(void) {
void external_flash_init(void) {
if (spi_flash_is_initialised) {
return;
}
samd_peripherals_sercom_clock_init(SPI_FLASH_SERCOM, SPI_FLASH_SERCOM_INDEX);
// Set up with defaults, then change.
spi_m_sync_init(&spi_flash_desc, SPI_FLASH_SERCOM);
hri_sercomspi_write_CTRLA_DOPO_bf(SPI_FLASH_SERCOM, SPI_FLASH_DOPO);
hri_sercomspi_write_CTRLA_DIPO_bf(SPI_FLASH_SERCOM, SPI_FLASH_DIPO);
gpio_set_pin_direction(SPI_FLASH_SCK_PIN, GPIO_DIRECTION_OUT);
gpio_set_pin_pull_mode(SPI_FLASH_SCK_PIN, GPIO_PULL_OFF);
gpio_set_pin_function(SPI_FLASH_SCK_PIN, SPI_FLASH_SCK_PIN_FUNCTION);
gpio_set_pin_direction(SPI_FLASH_MOSI_PIN, GPIO_DIRECTION_OUT);
gpio_set_pin_pull_mode(SPI_FLASH_MOSI_PIN, GPIO_PULL_OFF);
gpio_set_pin_function(SPI_FLASH_MOSI_PIN, SPI_FLASH_MOSI_PIN_FUNCTION);
gpio_set_pin_direction(SPI_FLASH_MISO_PIN, GPIO_DIRECTION_IN);
gpio_set_pin_pull_mode(SPI_FLASH_MISO_PIN, GPIO_PULL_OFF);
gpio_set_pin_function(SPI_FLASH_MISO_PIN, SPI_FLASH_MISO_PIN_FUNCTION);
hri_sercomspi_write_CTRLA_DOPO_bf(SPI_FLASH_SERCOM, SPI_FLASH_DOPO);
hri_sercomspi_write_CTRLA_DIPO_bf(SPI_FLASH_SERCOM, SPI_FLASH_DIPO);
spi_m_sync_set_baudrate(&spi_flash_desc, samd_peripherals_spi_baudrate_to_baud_reg_value(SPI_FLASH_BAUDRATE));
gpio_set_pin_direction(SPI_FLASH_CS_PIN, GPIO_DIRECTION_OUT);
// There's already a pull-up on the board.
gpio_set_pin_pull_mode(SPI_FLASH_CS_PIN, GPIO_PULL_OFF);
gpio_set_pin_function(SPI_FLASH_CS_PIN, GPIO_PIN_FUNCTION_OFF);
// Set CS high (disabled).
flash_disable();
spi_m_sync_enable(&spi_flash_desc);
spi_flash_init();
// Activity LED for flash writes.
#ifdef MICROPY_HW_LED_MSC
@ -300,20 +195,17 @@ void spi_flash_init(void) {
gpio_set_pin_level(MICROPY_HW_LED_MSC, false);
#endif
uint8_t jedec_id_request[4] = {CMD_READ_JEDEC_ID, 0x00, 0x00, 0x00};
uint8_t jedec_id_response[4] = {0x00, 0x00, 0x00, 0x00};
struct spi_xfer jedec_id_xfer = { jedec_id_request, jedec_id_response, 4 };
flash_enable();
spi_m_sync_transfer(&spi_flash_desc, &jedec_id_xfer);
flash_disable();
uint8_t manufacturer = jedec_id_response[1];
if ((jedec_id_response[1] == SPI_FLASH_JEDEC_MANUFACTURER
uint8_t jedec_id_response[3] = {0x00, 0x00, 0x00};
spi_flash_read_command(CMD_READ_JEDEC_ID, jedec_id_response, 3);
uint8_t manufacturer = jedec_id_response[0];
if ((jedec_id_response[0] == SPI_FLASH_JEDEC_MANUFACTURER
#ifdef SPI_FLASH_JEDEC_MANUFACTURER_2
|| jedec_id_response[1] == SPI_FLASH_JEDEC_MANUFACTURER_2
|| jedec_id_response[0] == SPI_FLASH_JEDEC_MANUFACTURER_2
#endif
) &&
jedec_id_response[2] == SPI_FLASH_JEDEC_MEMORY_TYPE &&
jedec_id_response[3] == SPI_FLASH_JEDEC_CAPACITY) {
jedec_id_response[1] == SPI_FLASH_JEDEC_MEMORY_TYPE &&
jedec_id_response[2] == SPI_FLASH_JEDEC_CAPACITY) {
spi_flash_is_initialised = true;
} else {
// Unknown flash chip!
@ -329,19 +221,12 @@ void spi_flash_init(void) {
write_enable();
// Turn off sector protection
uint8_t disable_protect_request[2] = {CMD_WRITE_STATUS_BYTE1, 0x00};
struct spi_xfer disable_protect_xfer = { disable_protect_request, 0, 4 };
flash_enable();
spi_m_sync_transfer(&spi_flash_desc, &disable_protect_xfer);
flash_disable();
uint8_t data[1] = {0x00};
spi_flash_write_command(CMD_WRITE_STATUS_BYTE1, data, 1);
}
// Turn off writes in case this is a microcontroller only reset.
uint8_t disable_write_request[1] = {CMD_DISABLE_WRITE};
struct spi_xfer disable_write_xfer = { disable_write_request, 0, 1 };
flash_enable();
spi_m_sync_transfer(&spi_flash_desc, &disable_write_xfer);
flash_disable();
spi_flash_command(CMD_DISABLE_WRITE);
wait_for_flash_ready();
@ -353,12 +238,12 @@ void spi_flash_init(void) {
}
// The size of each individual block.
uint32_t spi_flash_get_block_size(void) {
uint32_t external_flash_get_block_size(void) {
return FILESYSTEM_BLOCK_SIZE;
}
// The total number of available blocks.
uint32_t spi_flash_get_block_count(void) {
uint32_t external_flash_get_block_count(void) {
// We subtract one erase sector size because we may use it as a staging area
// for writes.
return SPI_FLASH_PART1_START_BLOCK + (SPI_FLASH_TOTAL_SIZE - SPI_FLASH_ERASE_SIZE) / FILESYSTEM_BLOCK_SIZE;
@ -510,12 +395,12 @@ static void spi_flash_flush_keep_cache(bool keep_cache) {
// External flash function used. If called externally we assume we won't need
// the cache after.
void spi_flash_flush(void) {
void external_flash_flush(void) {
spi_flash_flush_keep_cache(false);
}
void flash_flush(void) {
spi_flash_flush();
external_flash_flush();
}
// Builds a partition entry for the MBR.
@ -557,7 +442,7 @@ static void build_partition(uint8_t *buf, int boot, int type,
}
static int32_t convert_block_to_flash_addr(uint32_t block) {
if (SPI_FLASH_PART1_START_BLOCK <= block && block < spi_flash_get_block_count()) {
if (SPI_FLASH_PART1_START_BLOCK <= block && block < external_flash_get_block_count()) {
// a block in partition 1
block -= SPI_FLASH_PART1_START_BLOCK;
return block * FILESYSTEM_BLOCK_SIZE;
@ -566,7 +451,7 @@ static int32_t convert_block_to_flash_addr(uint32_t block) {
return -1;
}
bool spi_flash_read_block(uint8_t *dest, uint32_t block) {
bool external_flash_read_block(uint8_t *dest, uint32_t block) {
if (block == 0) {
// Fake the MBR so we can decide on our own partition table
for (int i = 0; i < 446; i++) {
@ -575,7 +460,7 @@ bool spi_flash_read_block(uint8_t *dest, uint32_t block) {
build_partition(dest + 446, 0, 0x01 /* FAT12 */,
SPI_FLASH_PART1_START_BLOCK,
spi_flash_get_block_count() - SPI_FLASH_PART1_START_BLOCK);
external_flash_get_block_count() - SPI_FLASH_PART1_START_BLOCK);
build_partition(dest + 462, 0, 0, 0, 0);
build_partition(dest + 478, 0, 0, 0, 0);
build_partition(dest + 494, 0, 0, 0, 0);
@ -618,7 +503,7 @@ bool spi_flash_read_block(uint8_t *dest, uint32_t block) {
}
}
bool spi_flash_write_block(const uint8_t *data, uint32_t block) {
bool external_flash_write_block(const uint8_t *data, uint32_t block) {
if (block < SPI_FLASH_PART1_START_BLOCK) {
// Fake writing below the flash partition.
return true;
@ -670,18 +555,18 @@ bool spi_flash_write_block(const uint8_t *data, uint32_t block) {
}
}
mp_uint_t spi_flash_read_blocks(uint8_t *dest, uint32_t block_num, uint32_t num_blocks) {
mp_uint_t external_flash_read_blocks(uint8_t *dest, uint32_t block_num, uint32_t num_blocks) {
for (size_t i = 0; i < num_blocks; i++) {
if (!spi_flash_read_block(dest + i * FILESYSTEM_BLOCK_SIZE, block_num + i)) {
if (!external_flash_read_block(dest + i * FILESYSTEM_BLOCK_SIZE, block_num + i)) {
return 1; // error
}
}
return 0; // success
}
mp_uint_t spi_flash_write_blocks(const uint8_t *src, uint32_t block_num, uint32_t num_blocks) {
mp_uint_t external_flash_write_blocks(const uint8_t *src, uint32_t block_num, uint32_t num_blocks) {
for (size_t i = 0; i < num_blocks; i++) {
if (!spi_flash_write_block(src + i * FILESYSTEM_BLOCK_SIZE, block_num + i)) {
if (!external_flash_write_block(src + i * FILESYSTEM_BLOCK_SIZE, block_num + i)) {
return 1; // error
}
}
@ -694,58 +579,58 @@ mp_uint_t spi_flash_write_blocks(const uint8_t *src, uint32_t block_num, uint32_
// Expose the flash as an object with the block protocol.
// there is a singleton Flash object
STATIC const mp_obj_base_t spi_flash_obj = {&spi_flash_type};
STATIC const mp_obj_base_t external_flash_obj = {&external_flash_type};
STATIC mp_obj_t spi_flash_obj_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
STATIC mp_obj_t external_flash_obj_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
// check arguments
mp_arg_check_num(n_args, n_kw, 0, 0, false);
// return singleton object
return (mp_obj_t)&spi_flash_obj;
return (mp_obj_t)&external_flash_obj;
}
STATIC mp_obj_t spi_flash_obj_readblocks(mp_obj_t self, mp_obj_t block_num, mp_obj_t buf) {
STATIC mp_obj_t external_flash_obj_readblocks(mp_obj_t self, mp_obj_t block_num, mp_obj_t buf) {
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(buf, &bufinfo, MP_BUFFER_WRITE);
mp_uint_t ret = spi_flash_read_blocks(bufinfo.buf, mp_obj_get_int(block_num), bufinfo.len / FILESYSTEM_BLOCK_SIZE);
mp_uint_t ret = external_flash_read_blocks(bufinfo.buf, mp_obj_get_int(block_num), bufinfo.len / FILESYSTEM_BLOCK_SIZE);
return MP_OBJ_NEW_SMALL_INT(ret);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(spi_flash_obj_readblocks_obj, spi_flash_obj_readblocks);
STATIC MP_DEFINE_CONST_FUN_OBJ_3(external_flash_obj_readblocks_obj, external_flash_obj_readblocks);
STATIC mp_obj_t spi_flash_obj_writeblocks(mp_obj_t self, mp_obj_t block_num, mp_obj_t buf) {
STATIC mp_obj_t external_flash_obj_writeblocks(mp_obj_t self, mp_obj_t block_num, mp_obj_t buf) {
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(buf, &bufinfo, MP_BUFFER_READ);
mp_uint_t ret = spi_flash_write_blocks(bufinfo.buf, mp_obj_get_int(block_num), bufinfo.len / FILESYSTEM_BLOCK_SIZE);
mp_uint_t ret = external_flash_write_blocks(bufinfo.buf, mp_obj_get_int(block_num), bufinfo.len / FILESYSTEM_BLOCK_SIZE);
return MP_OBJ_NEW_SMALL_INT(ret);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(spi_flash_obj_writeblocks_obj, spi_flash_obj_writeblocks);
STATIC MP_DEFINE_CONST_FUN_OBJ_3(external_flash_obj_writeblocks_obj, external_flash_obj_writeblocks);
STATIC mp_obj_t spi_flash_obj_ioctl(mp_obj_t self, mp_obj_t cmd_in, mp_obj_t arg_in) {
STATIC mp_obj_t external_flash_obj_ioctl(mp_obj_t self, mp_obj_t cmd_in, mp_obj_t arg_in) {
mp_int_t cmd = mp_obj_get_int(cmd_in);
switch (cmd) {
case BP_IOCTL_INIT: spi_flash_init(); return MP_OBJ_NEW_SMALL_INT(0);
case BP_IOCTL_DEINIT: spi_flash_flush(); return MP_OBJ_NEW_SMALL_INT(0); // TODO properly
case BP_IOCTL_SYNC: spi_flash_flush(); return MP_OBJ_NEW_SMALL_INT(0);
case BP_IOCTL_SEC_COUNT: return MP_OBJ_NEW_SMALL_INT(spi_flash_get_block_count());
case BP_IOCTL_SEC_SIZE: return MP_OBJ_NEW_SMALL_INT(spi_flash_get_block_size());
case BP_IOCTL_INIT: external_flash_init(); return MP_OBJ_NEW_SMALL_INT(0);
case BP_IOCTL_DEINIT: external_flash_flush(); return MP_OBJ_NEW_SMALL_INT(0); // TODO properly
case BP_IOCTL_SYNC: external_flash_flush(); return MP_OBJ_NEW_SMALL_INT(0);
case BP_IOCTL_SEC_COUNT: return MP_OBJ_NEW_SMALL_INT(external_flash_get_block_count());
case BP_IOCTL_SEC_SIZE: return MP_OBJ_NEW_SMALL_INT(external_flash_get_block_size());
default: return mp_const_none;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(spi_flash_obj_ioctl_obj, spi_flash_obj_ioctl);
STATIC MP_DEFINE_CONST_FUN_OBJ_3(external_flash_obj_ioctl_obj, external_flash_obj_ioctl);
STATIC const mp_rom_map_elem_t spi_flash_obj_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_readblocks), MP_ROM_PTR(&spi_flash_obj_readblocks_obj) },
{ MP_ROM_QSTR(MP_QSTR_writeblocks), MP_ROM_PTR(&spi_flash_obj_writeblocks_obj) },
{ MP_ROM_QSTR(MP_QSTR_ioctl), MP_ROM_PTR(&spi_flash_obj_ioctl_obj) },
STATIC const mp_rom_map_elem_t external_flash_obj_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_readblocks), MP_ROM_PTR(&external_flash_obj_readblocks_obj) },
{ MP_ROM_QSTR(MP_QSTR_writeblocks), MP_ROM_PTR(&external_flash_obj_writeblocks_obj) },
{ MP_ROM_QSTR(MP_QSTR_ioctl), MP_ROM_PTR(&external_flash_obj_ioctl_obj) },
};
STATIC MP_DEFINE_CONST_DICT(spi_flash_obj_locals_dict, spi_flash_obj_locals_dict_table);
STATIC MP_DEFINE_CONST_DICT(external_flash_obj_locals_dict, external_flash_obj_locals_dict_table);
const mp_obj_type_t spi_flash_type = {
const mp_obj_type_t external_flash_type = {
{ &mp_type_type },
.name = MP_QSTR_SPIFlash,
.make_new = spi_flash_obj_make_new,
.locals_dict = (mp_obj_t)&spi_flash_obj_locals_dict,
.make_new = external_flash_obj_make_new,
.locals_dict = (mp_obj_t)&external_flash_obj_locals_dict,
};
void flash_init_vfs(fs_user_mount_t *vfs) {
@ -753,12 +638,12 @@ void flash_init_vfs(fs_user_mount_t *vfs) {
vfs->flags |= FSUSER_NATIVE | FSUSER_HAVE_IOCTL;
vfs->fatfs.drv = vfs;
vfs->fatfs.part = 1; // flash filesystem lives on first partition
vfs->readblocks[0] = (mp_obj_t)&spi_flash_obj_readblocks_obj;
vfs->readblocks[1] = (mp_obj_t)&spi_flash_obj;
vfs->readblocks[2] = (mp_obj_t)spi_flash_read_blocks; // native version
vfs->writeblocks[0] = (mp_obj_t)&spi_flash_obj_writeblocks_obj;
vfs->writeblocks[1] = (mp_obj_t)&spi_flash_obj;
vfs->writeblocks[2] = (mp_obj_t)spi_flash_write_blocks; // native version
vfs->u.ioctl[0] = (mp_obj_t)&spi_flash_obj_ioctl_obj;
vfs->u.ioctl[1] = (mp_obj_t)&spi_flash_obj;
vfs->readblocks[0] = (mp_obj_t)&external_flash_obj_readblocks_obj;
vfs->readblocks[1] = (mp_obj_t)&external_flash_obj;
vfs->readblocks[2] = (mp_obj_t)external_flash_read_blocks; // native version
vfs->writeblocks[0] = (mp_obj_t)&external_flash_obj_writeblocks_obj;
vfs->writeblocks[1] = (mp_obj_t)&external_flash_obj;
vfs->writeblocks[2] = (mp_obj_t)external_flash_write_blocks; // native version
vfs->u.ioctl[0] = (mp_obj_t)&external_flash_obj_ioctl_obj;
vfs->u.ioctl[1] = (mp_obj_t)&external_flash_obj;
}

26
ports/atmel-samd/spi_flash.h → ports/atmel-samd/external_flash/external_flash.h
View File

@ -23,8 +23,8 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_ATMEL_SAMD_SPI_FLASH_H
#define MICROPY_INCLUDED_ATMEL_SAMD_SPI_FLASH_H
#ifndef MICROPY_INCLUDED_ATMEL_SAMD_EXTERNAL_FLASH_H
#define MICROPY_INCLUDED_ATMEL_SAMD_EXTERNAL_FLASH_H
#include <stdbool.h>
@ -40,21 +40,21 @@
#define SPI_FLASH_SYSTICK_MASK (0x1ff) // 512ms
#define SPI_FLASH_IDLE_TICK(tick) (((tick) & SPI_FLASH_SYSTICK_MASK) == 2)
void spi_flash_init(void);
uint32_t spi_flash_get_block_size(void);
uint32_t spi_flash_get_block_count(void);
void spi_flash_irq_handler(void);
void spi_flash_flush(void);
bool spi_flash_read_block(uint8_t *dest, uint32_t block);
bool spi_flash_write_block(const uint8_t *src, uint32_t block);
void external_flash_init(void);
uint32_t external_flash_get_block_size(void);
uint32_t external_flash_get_block_count(void);
void external_flash_irq_handler(void);
void external_flash_flush(void);
bool external_flash_read_block(uint8_t *dest, uint32_t block);
bool external_flash_write_block(const uint8_t *src, uint32_t block);
// these return 0 on success, non-zero on error
mp_uint_t spi_flash_read_blocks(uint8_t *dest, uint32_t block_num, uint32_t num_blocks);
mp_uint_t spi_flash_write_blocks(const uint8_t *src, uint32_t block_num, uint32_t num_blocks);
mp_uint_t external_flash_read_blocks(uint8_t *dest, uint32_t block_num, uint32_t num_blocks);
mp_uint_t external_flash_write_blocks(const uint8_t *src, uint32_t block_num, uint32_t num_blocks);
extern const struct _mp_obj_type_t spi_flash_type;
extern const struct _mp_obj_type_t external_flash_type;
struct _fs_user_mount_t;
void flash_init_vfs(struct _fs_user_mount_t *vfs);
#endif // MICROPY_INCLUDED_ATMEL_SAMD_SPI_FLASH_H
#endif // MICROPY_INCLUDED_ATMEL_SAMD_EXTERNAL_FLASH_H

196
ports/atmel-samd/external_flash/qspi_flash.c Normal file
View File

@ -0,0 +1,196 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016, 2017 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "spi_flash_api.h"
#include <stdint.h>
#include <string.h>
#include "external_flash/common_commands.h"
#include "atmel_start_pins.h"
#include "hal_gpio.h"
bool spi_flash_command(uint8_t command) {
QSPI->INSTRCTRL.bit.INSTR = command;
QSPI->INSTRFRAME.reg = QSPI_INSTRFRAME_WIDTH_SINGLE_BIT_SPI |
QSPI_INSTRFRAME_ADDRLEN_24BITS |
QSPI_INSTRFRAME_TFRTYPE_READ |
QSPI_INSTRFRAME_INSTREN;
QSPI->CTRLA.reg = QSPI_CTRLA_ENABLE | QSPI_CTRLA_LASTXFER;
while( !QSPI->INTFLAG.bit.INSTREND );
QSPI->INTFLAG.reg = QSPI_INTFLAG_INSTREND;
return true;
}
bool spi_flash_read_command(uint8_t command, uint8_t* response, uint32_t length) {
QSPI->INSTRCTRL.bit.INSTR = command;
QSPI->INSTRFRAME.reg = QSPI_INSTRFRAME_WIDTH_SINGLE_BIT_SPI |
QSPI_INSTRFRAME_ADDRLEN_24BITS |
QSPI_INSTRFRAME_TFRTYPE_READ |
QSPI_INSTRFRAME_INSTREN |
QSPI_INSTRFRAME_DATAEN;
memcpy(response, (uint8_t *) QSPI_AHB, length);
QSPI->CTRLA.reg = QSPI_CTRLA_ENABLE | QSPI_CTRLA_LASTXFER;
while( !QSPI->INTFLAG.bit.INSTREND );
QSPI->INTFLAG.reg = QSPI_INTFLAG_INSTREND;
return true;
}
bool spi_flash_write_command(uint8_t command, uint8_t* data, uint32_t length) {
QSPI->INSTRCTRL.bit.INSTR = command;
QSPI->INSTRFRAME.reg = QSPI_INSTRFRAME_WIDTH_SINGLE_BIT_SPI |
QSPI_INSTRFRAME_ADDRLEN_24BITS |
QSPI_INSTRFRAME_TFRTYPE_WRITE |
QSPI_INSTRFRAME_INSTREN;
if (data != NULL) {
QSPI->INSTRFRAME.bit.DATAEN = true;
memcpy((uint8_t *) QSPI_AHB, data, length);
}
QSPI->CTRLA.reg = QSPI_CTRLA_ENABLE | QSPI_CTRLA_LASTXFER;
while( !QSPI->INTFLAG.bit.INSTREND );
QSPI->INTFLAG.reg = QSPI_INTFLAG_INSTREND;
return true;
}
bool spi_flash_sector_command(uint8_t command, uint32_t address) {
QSPI->INSTRCTRL.bit.INSTR = command;
QSPI->INSTRADDR.bit.ADDR = address;
QSPI->INSTRFRAME.reg = QSPI_INSTRFRAME_WIDTH_SINGLE_BIT_SPI |
QSPI_INSTRFRAME_ADDRLEN_24BITS |
QSPI_INSTRFRAME_TFRTYPE_WRITE |
QSPI_INSTRFRAME_INSTREN |
QSPI_INSTRFRAME_ADDREN;
QSPI->CTRLA.reg = QSPI_CTRLA_ENABLE | QSPI_CTRLA_LASTXFER;
while( !QSPI->INTFLAG.bit.INSTREND );
QSPI->INTFLAG.reg = QSPI_INTFLAG_INSTREND;
return true;
}
bool spi_flash_write_data(uint32_t address, uint8_t* data, uint32_t length) {
QSPI->INSTRCTRL.bit.INSTR = CMD_PAGE_PROGRAM;
uint32_t mode = QSPI_INSTRFRAME_WIDTH_SINGLE_BIT_SPI;
QSPI->INSTRFRAME.reg = mode |
QSPI_INSTRFRAME_ADDRLEN_24BITS |
QSPI_INSTRFRAME_TFRTYPE_WRITEMEMORY |
QSPI_INSTRFRAME_INSTREN |
QSPI_INSTRFRAME_ADDREN |
QSPI_INSTRFRAME_DATAEN;
memcpy(((uint8_t *) QSPI_AHB) + address, data, length);
QSPI->CTRLA.reg = QSPI_CTRLA_ENABLE | QSPI_CTRLA_LASTXFER;
while( !QSPI->INTFLAG.bit.INSTREND );
QSPI->INTFLAG.reg = QSPI_INTFLAG_INSTREND;
return true;
}
bool spi_flash_read_data(uint32_t address, uint8_t* data, uint32_t length) {
QSPI->INSTRCTRL.bit.INSTR = CMD_QUAD_READ;
uint32_t mode = QSPI_INSTRFRAME_WIDTH_QUAD_OUTPUT;
QSPI->INSTRFRAME.reg = mode |
QSPI_INSTRFRAME_ADDRLEN_24BITS |
QSPI_INSTRFRAME_TFRTYPE_READMEMORY |
QSPI_INSTRFRAME_INSTREN |
QSPI_INSTRFRAME_ADDREN |
QSPI_INSTRFRAME_DATAEN |
QSPI_INSTRFRAME_DUMMYLEN(8);
memcpy(data, ((uint8_t *) QSPI_AHB) + address, length);
QSPI->CTRLA.reg = QSPI_CTRLA_ENABLE | QSPI_CTRLA_LASTXFER;
while( !QSPI->INTFLAG.bit.INSTREND );
QSPI->INTFLAG.reg = QSPI_INTFLAG_INSTREND;
return true;
}
void spi_flash_init(void) {
MCLK->APBCMASK.bit.QSPI_ = true;
MCLK->AHBMASK.bit.QSPI_ = true;
MCLK->AHBMASK.bit.QSPI_2X_ = false; // Only true if we are doing DDR.
QSPI->CTRLA.reg = QSPI_CTRLA_SWRST;
// We don't need to wait because we're running as fast as the CPU.
QSPI->BAUD.bit.BAUD = 10;
QSPI->CTRLB.reg = QSPI_CTRLB_MODE_MEMORY |
QSPI_CTRLB_DATALEN_8BITS |
QSPI_CTRLB_CSMODE_LASTXFER;
QSPI->CTRLA.bit.ENABLE = 1;
// The QSPI is only connected to one set of pins in the SAMD51 so we can hard code it.
uint32_t pins[6] = {PIN_PA08, PIN_PA09, PIN_PA10, PIN_PA11, PIN_PB10, PIN_PB11};
for (uint8_t i = 0; i < 6; i++) {
gpio_set_pin_direction(pins[i], GPIO_DIRECTION_IN);
gpio_set_pin_pull_mode(pins[i], GPIO_PULL_OFF);
gpio_set_pin_function(pins[i], GPIO_PIN_FUNCTION_H);
}
// Verify that QSPI mode is enabled.
uint8_t status;
spi_flash_read_command(0x35, &status, 1);
if ((status & 0x2) == 0) {
uint8_t full_status[3] = { 0, status | 0x2, 0x70};
spi_flash_command(CMD_ENABLE_WRITE);
spi_flash_write_command(0x01, full_status, 3);
}
asm("nop");
}

139
ports/atmel-samd/external_flash/spi_flash.c Normal file
View File

@ -0,0 +1,139 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016, 2017 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "spi_flash_api.h"
#include <stdint.h>
#include <string.h>
#include "external_flash/common_commands.h"
#include "peripherals.h"
#include "hal_gpio.h"
#include "hal_spi_m_sync.h"
struct spi_m_sync_descriptor spi_flash_desc;
// Enable the flash over SPI.
static void flash_enable(void) {
gpio_set_pin_level(SPI_FLASH_CS_PIN, false);
}
// Disable the flash over SPI.
static void flash_disable(void) {
gpio_set_pin_level(SPI_FLASH_CS_PIN, true);
}
static bool transfer(uint8_t* command, uint32_t command_length, uint8_t* data_in, uint8_t* data_out, uint32_t data_length) {
struct spi_xfer xfer = { command, NULL, command_length };
flash_enable();
int32_t status = spi_m_sync_transfer(&spi_flash_desc, &xfer);
if (status >= 0 && !(data_in == NULL && data_out == NULL)) {
struct spi_xfer data_xfer = {data_in, data_out, data_length};
status = spi_m_sync_transfer(&spi_flash_desc, &data_xfer);
}
flash_disable();
return status >= 0;
}
static bool transfer_command(uint8_t command, uint8_t* data_in, uint8_t* data_out, uint32_t data_length) {
return transfer(&command, 1, data_in, data_out, data_length);
}
bool spi_flash_command(uint8_t command) {
return transfer_command(command, NULL, NULL, 0);
}
bool spi_flash_read_command(uint8_t command, uint8_t* data, uint32_t data_length) {
return transfer_command(command, NULL, data, data_length);
}
bool spi_flash_write_command(uint8_t command, uint8_t* data, uint32_t data_length) {
return transfer_command(command, data, NULL, data_length);
}
// Pack the low 24 bits of the address into a uint8_t array.
static void address_to_bytes(uint32_t address, uint8_t* bytes) {
bytes[0] = (address >> 16) & 0xff;
bytes[1] = (address >> 8) & 0xff;
bytes[2] = address & 0xff;
}
bool spi_flash_sector_command(uint8_t command, uint32_t address) {
uint8_t request[4] = {command, 0x00, 0x00, 0x00};
address_to_bytes(address, request + 1);
return transfer(request, 4, NULL, NULL, 0);
}
bool spi_flash_write_data(uint32_t address, uint8_t* data, uint32_t data_length) {
uint8_t request[4] = {CMD_PAGE_PROGRAM, 0x00, 0x00, 0x00};
// Write the SPI flash write address into the bytes following the command byte.
address_to_bytes(address, request + 1);
return transfer(request, 4, data, NULL, data_length);
}
bool spi_flash_read_data(uint32_t address, uint8_t* data, uint32_t data_length) {
uint8_t request[4] = {CMD_READ_DATA, 0x00, 0x00, 0x00};
// Write the SPI flash write address into the bytes following the command byte.
address_to_bytes(address, request + 1);
return transfer(request, 4, NULL, data, data_length);
}
void spi_flash_init(void) {
samd_peripherals_sercom_clock_init(SPI_FLASH_SERCOM, SPI_FLASH_SERCOM_INDEX);
// Set up with defaults, then change.
spi_m_sync_init(&spi_flash_desc, SPI_FLASH_SERCOM);
hri_sercomspi_write_CTRLA_DOPO_bf(SPI_FLASH_SERCOM, SPI_FLASH_DOPO);
hri_sercomspi_write_CTRLA_DIPO_bf(SPI_FLASH_SERCOM, SPI_FLASH_DIPO);
gpio_set_pin_direction(SPI_FLASH_SCK_PIN, GPIO_DIRECTION_OUT);
gpio_set_pin_pull_mode(SPI_FLASH_SCK_PIN, GPIO_PULL_OFF);
gpio_set_pin_function(SPI_FLASH_SCK_PIN, SPI_FLASH_SCK_PIN_FUNCTION);
gpio_set_pin_direction(SPI_FLASH_MOSI_PIN, GPIO_DIRECTION_OUT);
gpio_set_pin_pull_mode(SPI_FLASH_MOSI_PIN, GPIO_PULL_OFF);
gpio_set_pin_function(SPI_FLASH_MOSI_PIN, SPI_FLASH_MOSI_PIN_FUNCTION);
gpio_set_pin_direction(SPI_FLASH_MISO_PIN, GPIO_DIRECTION_IN);
gpio_set_pin_pull_mode(SPI_FLASH_MISO_PIN, GPIO_PULL_OFF);
gpio_set_pin_function(SPI_FLASH_MISO_PIN, SPI_FLASH_MISO_PIN_FUNCTION);
hri_sercomspi_write_CTRLA_DOPO_bf(SPI_FLASH_SERCOM, SPI_FLASH_DOPO);
hri_sercomspi_write_CTRLA_DIPO_bf(SPI_FLASH_SERCOM, SPI_FLASH_DIPO);
spi_m_sync_set_baudrate(&spi_flash_desc, samd_peripherals_spi_baudrate_to_baud_reg_value(SPI_FLASH_BAUDRATE));
gpio_set_pin_direction(SPI_FLASH_CS_PIN, GPIO_DIRECTION_OUT);
// There's already a pull-up on the board.
gpio_set_pin_pull_mode(SPI_FLASH_CS_PIN, GPIO_PULL_OFF);
gpio_set_pin_function(SPI_FLASH_CS_PIN, GPIO_PIN_FUNCTION_OFF);
// Set CS high (disabled).
flash_disable();
spi_m_sync_enable(&spi_flash_desc);
}

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ports/atmel-samd/external_flash/spi_flash_api.h Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_ATMEL_SAMD_SPI_FLASH_H
#define MICROPY_INCLUDED_ATMEL_SAMD_SPI_FLASH_H
#include <stdbool.h>
#include <stdint.h>
// This API is implemented for both normal SPI peripherals and QSPI peripherals.
bool spi_flash_command(uint8_t command);
bool spi_flash_read_command(uint8_t command, uint8_t* response, uint32_t length);
bool spi_flash_write_command(uint8_t command, uint8_t* data, uint32_t length);
bool spi_flash_sector_command(uint8_t command, uint32_t address);
bool spi_flash_write_data(uint32_t address, uint8_t* data, uint32_t data_length);
bool spi_flash_read_data(uint32_t address, uint8_t* data, uint32_t data_length);
void spi_flash_init(void);
#endif // MICROPY_INCLUDED_ATMEL_SAMD_SPI_FLASH_H