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/*
ChibiOS - Copyright (C) 2016 Giovanni Di Sirio
This file is part of ChibiOS.
ChibiOS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file m25q.c
* @brief Micron serial flash driver code.
*
* @addtogroup m25q
* @{
*/
#include "hal.h"
#include "m25q.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#define PAGE_SIZE 256U
#define PAGE_MASK (PAGE_SIZE - 1U)
#if M25Q_USE_SUB_SECTORS == TRUE
#define SECTOR_SIZE 0x00001000U
#define CMD_SECTOR_ERASE M25Q_CMD_SUBSECTOR_ERASE
#else
#define SECTOR_SIZE 0x00010000U
#define CMD_SECTOR_ERASE M25Q_CMD_SECTOR_ERASE
#endif
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables and types. */
/*===========================================================================*/
static const flash_descriptor_t *get_descriptor(void *instance);
static flash_error_t read(void *instance, flash_address_t addr,
uint8_t *rp, size_t n);
static flash_error_t program(void *instance, flash_address_t addr,
const uint8_t *pp, size_t n);
static flash_error_t start_erase_all(void *instance);
static flash_error_t start_erase_sector(void *instance, flash_sector_t sector);
static flash_error_t query_erase(void *instance, uint32_t *msec);
static flash_error_t verify_erase(void *instance, flash_sector_t sector);
static flash_error_t read_id(void *instance, uint8_t *rp, size_t n);
/**
* @brief Virtual methods table.
*/
static const struct M25QDriverVMT m25q_vmt = {
get_descriptor, read, program,
start_erase_all, start_erase_sector, query_erase, verify_erase,
read_id
};
/**
* @brief N25Q128 descriptor.
*/
static flash_descriptor_t descriptor = {
.attributes = FLASH_ATTR_ERASED_IS_ONE | FLASH_ATTR_REWRITABLE |
FLASH_ATTR_SUSPEND_ERASE_CAPABLE,
.page_size = 256U,
#if M25Q_USE_SUB_SECTORS == TRUE
.sectors_count = 4096U,
#else
.sectors_count = 256U,
#endif
.sectors = NULL,
.sectors_size = SECTOR_SIZE,
.address = 0U
};
#if M25Q_BUS_MODE != M25Q_BUS_MODE_SPI
static const qspi_command_t cmd_read_id = {
.cfg = QSPI_CFG_CMD(M25Q_CMD_READ_ID) |
#if M25Q_SWITCH_WIDTH == TRUE
QSPI_CFG_CMD_MODE_ONE_LINE |
QSPI_CFG_DATA_MODE_ONE_LINE,
#else
#if M25Q_BUS_MODE == M25Q_BUS_MODE_QSPI1L
QSPI_CFG_CMD_MODE_ONE_LINE |
QSPI_CFG_DATA_MODE_ONE_LINE,
#elif M25Q_BUS_MODE == M25Q_BUS_MODE_QSPI2L
QSPI_CFG_CMD_MODE_TWO_LINES |
QSPI_CFG_DATA_MODE_TWO_LINES,
#else
QSPI_CFG_CMD_MODE_FOUR_LINES |
QSPI_CFG_DATA_MODE_FOUR_LINES,
#endif
#endif
.addr = 0,
.alt = 0
};
#endif
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
#if ((M25Q_BUS_MODE != M25Q_BUS_MODE_SPI) && (M25Q_SHARED_BUS == TRUE)) || \
defined(__DOXYGEN__)
static void flash_bus_acquire(M25QDriver *devp) {
qspiAcquireBus(devp->config->qspip);
}
static void flash_bus_release(M25QDriver *devp) {
qspiReleaseBus(devp->config->qspip);
}
#elif (M25Q_BUS_MODE == M25Q_BUS_MODE_SPI) && (M25Q_SHARED_BUS == TRUE)
static void flash_bus_acquire(M25QDriver *devp) {
spiAcquireBus(devp->config->spip);
spiStart(devp->config->spip, devp->config->spicfg);
}
static void flash_bus_release(M25QDriver *devp) {
spiReleaseBus(devp->config->spip);
}
#else
#define flash_bus_acquire(devp)
#define flash_bus_release(devp)
#endif
static void flash_short_cmd(M25QDriver *devp, uint8_t cmd) {
#if M25Q_BUS_MODE != M25Q_BUS_MODE_SPI
qspi_command_t mode;
mode.cfg = devp->qspi_mode | QSPI_CFG_CMD(cmd);
#else
uint8_t buf[1];
spiSelect(devp->config->spip);
buf[0] = cmd;
spiSend(devp->config->spip, 1, buf);
spiUnselect(devp->config->spip);
#endif
}
static void flash_send_cmd(M25QDriver *devp, uint8_t cmd) {
uint8_t buf[1];
buf[0] = cmd;
// spiSend(devp->config->spip, 1, buf);
}
static void flash_send_cmd_addr(M25QDriver *devp,
uint8_t cmd,
flash_address_t addr) {
uint8_t buf[4];
buf[0] = cmd;
buf[1] = (uint8_t)(addr >> 16);
buf[2] = (uint8_t)(addr >> 8);
buf[3] = (uint8_t)(addr >> 0);
// spiSend(devp->config->spip, 4, buf);
}
static flash_error_t flash_poll_status(M25QDriver *devp) {
return FLASH_NO_ERROR;
}
static const flash_descriptor_t *get_descriptor(void *instance) {
M25QDriver *devp = (M25QDriver *)instance;
osalDbgCheck(instance != NULL);
osalDbgAssert((devp->state != FLASH_UNINIT) && (devp->state != FLASH_STOP),
"invalid state");
return &descriptor;
}
static flash_error_t read(void *instance, flash_address_t addr,
uint8_t *rp, size_t n) {
return FLASH_NO_ERROR;
}
static flash_error_t program(void *instance, flash_address_t addr,
const uint8_t *pp, size_t n) {
return FLASH_NO_ERROR;
}
static flash_error_t start_erase_all(void *instance) {
return FLASH_NO_ERROR;
}
static flash_error_t start_erase_sector(void *instance, flash_sector_t sector) {
return FLASH_NO_ERROR;
}
static flash_error_t verify_erase(void *instance, flash_sector_t sector) {
return FLASH_NO_ERROR;
}
static flash_error_t query_erase(void *instance, uint32_t *msec) {
return FLASH_NO_ERROR;
}
static flash_error_t read_id(void *instance, uint8_t *rp, size_t n) {
(void)instance;
(void)rp;
(void)n;
return FLASH_NO_ERROR;
}
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Initializes an instance.
*
* @param[out] devp pointer to the @p M25QDriver object
*
* @init
*/
void m25qObjectInit(M25QDriver *devp) {
osalDbgCheck(devp != NULL);
devp->vmt = &m25q_vmt;
devp->state = FLASH_STOP;
devp->config = NULL;
#if (M25Q_BUS_MODE != M25Q_BUS_MODE_SPI) || defined(__DOXYGEN__)
devp->qspi_mode = 0U;
#endif
}
/**
* @brief Configures and activates N25Q128 driver.
*
* @param[in] devp pointer to the @p M25QDriver object
* @param[in] config pointer to the configuration
*
* @api
*/
void m25qStart(M25QDriver *devp, const M25QConfig *config) {
osalDbgCheck((devp != NULL) && (config != NULL));
osalDbgAssert(devp->state != FLASH_UNINIT, "invalid state");
devp->config = config;
if (devp->state == FLASH_STOP) {
uint8_t id[3];
/* Bus acquisition.*/
flash_bus_acquire(devp);
#if M25Q_BUS_MODE == M25Q_BUS_MODE_SPI
spiStart(devp->config->spip, devp->config->spicfg);
#else
qspiStart(devp->config->qspip, devp->config->qspicfg);
#endif
#if M25Q_BUS_MODE == M25Q_BUS_MODE_SPI
#else
qspiSend(devp->config->qspip, &cmd_read_id, 3, id);
#endif
/* Reset Enable command.*/
// flash_short_cmd(devp, M25Q_CMD_RESET_ENABLE);
/* Reset Memory command.*/
// flash_short_cmd(devp, M25Q_CMD_RESET_MEMORY);
devp->state = FLASH_READY;
/* Bus release.*/
flash_bus_release(devp);
}
}
/**
* @brief Deactivates the N25Q128 driver.
*
* @param[in] devp pointer to the @p M25QDriver object
*
* @api
*/
void m25qStop(M25QDriver *devp) {
osalDbgCheck(devp != NULL);
osalDbgAssert(devp->state != FLASH_UNINIT, "invalid state");
if (devp->state != FLASH_STOP) {
/* Bus acquisition.*/
flash_bus_acquire(devp);
#if M25Q_BUS_MODE == M25Q_BUS_MODE_SPI
spiStop(devp->config->spip);
#else
qspiStop(devp->config->qspip);
#endif
devp->config = NULL;
devp->state = FLASH_STOP;
/* Bus release.*/
flash_bus_release(devp);
}
}
/** @} */
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