/** * Copyright (c) 2016 - 2019, Nordic Semiconductor ASA * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form, except as embedded into a Nordic * Semiconductor ASA integrated circuit in a product or a software update for * such product, must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other * materials provided with the distribution. * * 3. Neither the name of Nordic Semiconductor ASA nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * 4. This software, with or without modification, must only be used with a * Nordic Semiconductor ASA integrated circuit. * * 5. Any software provided in binary form under this license must not be reverse * engineered, decompiled, modified and/or disassembled. * * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef NRFX_QSPI_H__ #define NRFX_QSPI_H__ #include #include #ifdef __cplusplus extern "C" { #endif /** * @defgroup nrfx_qspi QSPI driver * @{ * @ingroup nrf_qspi * @brief Quad Serial Peripheral Interface (QSPI) peripheral driver. */ /** * @brief QSPI driver instance configuration structure. */ typedef struct { uint32_t xip_offset; /**< Address offset into the external memory for Execute in Place operation. */ nrf_qspi_pins_t pins; /**< Pins configuration structure. */ nrf_qspi_prot_conf_t prot_if; /**< Protocol layer interface configuration structure. */ nrf_qspi_phy_conf_t phy_if; /**< Physical layer interface configuration structure. */ uint8_t irq_priority; /**< Interrupt priority. */ } nrfx_qspi_config_t; /** * @brief QSPI instance default configuration. */ #define NRFX_QSPI_DEFAULT_CONFIG \ { \ .xip_offset = NRFX_QSPI_CONFIG_XIP_OFFSET, \ .pins = { \ .sck_pin = NRFX_QSPI_PIN_SCK, \ .csn_pin = NRFX_QSPI_PIN_CSN, \ .io0_pin = NRFX_QSPI_PIN_IO0, \ .io1_pin = NRFX_QSPI_PIN_IO1, \ .io2_pin = NRFX_QSPI_PIN_IO2, \ .io3_pin = NRFX_QSPI_PIN_IO3, \ }, \ .irq_priority = (uint8_t)NRFX_QSPI_CONFIG_IRQ_PRIORITY, \ .prot_if = { \ .readoc = (nrf_qspi_readoc_t)NRFX_QSPI_CONFIG_READOC, \ .writeoc = (nrf_qspi_writeoc_t)NRFX_QSPI_CONFIG_WRITEOC, \ .addrmode = (nrf_qspi_addrmode_t)NRFX_QSPI_CONFIG_ADDRMODE, \ .dpmconfig = false, \ }, \ .phy_if = { \ .sck_freq = (nrf_qspi_frequency_t)NRFX_QSPI_CONFIG_FREQUENCY, \ .sck_delay = (uint8_t)NRFX_QSPI_CONFIG_SCK_DELAY, \ .spi_mode = (nrf_qspi_spi_mode_t)NRFX_QSPI_CONFIG_MODE, \ .dpmen = false \ }, \ } /** * @brief QSPI custom instruction helper with default configuration. */ #define NRFX_QSPI_DEFAULT_CINSTR(opc, len) \ { \ .opcode = (opc), \ .length = (len), \ .io2_level = false, \ .io3_level = false, \ .wipwait = false, \ .wren = false \ } /** * @brief QSPI master driver event types, passed to the handler routine provided * during initialization. */ typedef enum { NRFX_QSPI_EVENT_DONE, /**< Transfer done. */ } nrfx_qspi_evt_t; /** * @brief QSPI driver event handler type. */ typedef void (*nrfx_qspi_handler_t)(nrfx_qspi_evt_t event, void * p_context); /** * @brief Function for initializing the QSPI driver instance. * * This function configures the peripheral and its interrupts and activates it. During the * activation process, the internal clocks are started and the QSPI peripheral tries to read * the status byte to read the busy bit. Reading the status byte is done in a simple poll and wait * mechanism. * If the busy bit is 1, this indicates issues with the external memory device. As a result, * @ref nrfx_qspi_init returns NRFX_ERROR_TIMEOUT. * * In case of issues: * - Check the connection. * - Make sure that the memory device does not perform other operations like erasing or writing. * - Check if there is a short circuit. * * @param[in] p_config Pointer to the structure with initial configuration. * @param[in] handler Event handler provided by the user. If NULL, transfers * will be performed in blocking mode. * @param[in] p_context Pointer to context. Use in interrupt handler. * * @retval NRFX_SUCCESS If initialization was successful. * @retval NRFX_ERROR_TIMEOUT If the peripheral cannot connect with external memory. * @retval NRFX_ERROR_INVALID_STATE If the driver was already initialized. * @retval NRFX_ERROR_INVALID_PARAM If the pin configuration was incorrect. */ nrfx_err_t nrfx_qspi_init(nrfx_qspi_config_t const * p_config, nrfx_qspi_handler_t handler, void * p_context); /** * @brief Function for uninitializing the QSPI driver instance. */ void nrfx_qspi_uninit(void); /** * @brief Function for reading data from QSPI memory. * * Write, read, and erase operations check memory device busy state before starting the operation. * If the memory is busy, the resulting action depends on the mode in which the read operation is used: * - blocking mode (without handler) - a delay occurs until the last operation still runs and * until operation data is still being read. * - interrupt mode (with handler) - event emission occurs after the last operation * and reading of data are finished. * * @param[out] p_rx_buffer Pointer to the receive buffer. * @param[in] rx_buffer_length Size of the data to read. * @param[in] src_address Address in memory to read from. * * @retval NRFX_SUCCESS If the operation was successful (blocking mode) or operation * was commissioned (handler mode). * @retval NRFX_ERROR_BUSY If the driver currently handles another operation. * @retval NRFX_ERROR_INVALID_ADDR If the provided buffer is not placed in the Data RAM region. */ nrfx_err_t nrfx_qspi_read(void * p_rx_buffer, size_t rx_buffer_length, uint32_t src_address); /** * @brief Function for writing data to QSPI memory. * * Write, read, and erase operations check memory device busy state before starting the operation. * If the memory is busy, the resulting action depends on the mode in which the write operation is used: * - blocking mode (without handler) - a delay occurs until the last operation still runs and * until operation data is still being sent. * - interrupt mode (with handler) - event emission occurs after the last operation * and sending of operation data are finished. * To manually control operation execution in the memory device, use @ref nrfx_qspi_mem_busy_check * after executing the write function. * Remember that an incoming event signalizes only that data was sent to the memory device and the periheral * before the write operation checked if memory was busy. * * @param[in] p_tx_buffer Pointer to the writing buffer. * @param[in] tx_buffer_length Size of the data to write. * @param[in] dst_address Address in memory to write to. * * @retval NRFX_SUCCESS If the operation was successful (blocking mode) or operation * was commissioned (handler mode). * @retval NRFX_ERROR_BUSY If the driver currently handles other operation. * @retval NRFX_ERROR_INVALID_ADDR If the provided buffer is not placed in the Data RAM region. */ nrfx_err_t nrfx_qspi_write(void const * p_tx_buffer, size_t tx_buffer_length, uint32_t dst_address); /** * @brief Function for starting erasing of one memory block - 4KB, 64KB, or the whole chip. * * Write, read, and erase operations check memory device busy state before starting the operation. * If the memory is busy, the resulting action depends on the mode in which the erase operation is used: * - blocking mode (without handler) - a delay occurs until the last operation still runs and * until operation data is still being sent. * - interrupt mode (with handler) - event emission occurs after the last operation * and sending of operation data are finished. * To manually control operation execution in the memory device, use @ref nrfx_qspi_mem_busy_check * after executing the erase function. * Remember that an incoming event signalizes only that data was sent to the memory device and the periheral * before the erase operation checked if memory was busy. * * @param[in] length Size of data to erase. See @ref nrf_qspi_erase_len_t. * @param[in] start_address Memory address to start erasing. If chip erase is performed, address * field is ommited. * * @retval NRFX_SUCCESS If the operation was successful (blocking mode) or operation * was commissioned (handler mode). * @retval NRFX_ERROR_BUSY If the driver currently handles another operation. */ nrfx_err_t nrfx_qspi_erase(nrf_qspi_erase_len_t length, uint32_t start_address); /** * @brief Function for starting an erase operation of the whole chip. * * @retval NRFX_SUCCESS If the operation was successful (blocking mode) or operation * was commissioned (handler mode). * @retval NRFX_ERROR_BUSY If the driver currently handles another operation. */ nrfx_err_t nrfx_qspi_chip_erase(void); /** * @brief Function for getting the current driver status and status byte of memory device with * testing WIP (write in progress) bit. * * @retval NRFX_SUCCESS If the driver and memory are ready to handle a new operation. * @retval NRFX_ERROR_BUSY If the driver or memory currently handle another operation. */ nrfx_err_t nrfx_qspi_mem_busy_check(void); /** * @brief Function for sending operation code, sending data, and receiving data from the memory device. * * Use this function to transfer configuration data to memory and to receive data from memory. * Pointers can be addresses from flash memory. * This function is a synchronous function and should be used only if necessary. * * @param[in] p_config Pointer to the structure with opcode and transfer configuration. * @param[in] p_tx_buffer Pointer to the array with data to send. Can be NULL if only opcode is transmitted. * @param[out] p_rx_buffer Pointer to the array for data to receive. Can be NULL if there is nothing to receive. * * @retval NRFX_SUCCESS If the operation was successful. * @retval NRFX_ERROR_TIMEOUT If the external memory is busy or there are connection issues. * @retval NRFX_ERROR_BUSY If the driver currently handles other operation. */ nrfx_err_t nrfx_qspi_cinstr_xfer(nrf_qspi_cinstr_conf_t const * p_config, void const * p_tx_buffer, void * p_rx_buffer); /** * @brief Function for sending operation code and data to the memory device with simpler configuration. * * Use this function to transfer configuration data to memory and to receive data from memory. * This function is a synchronous function and should be used only if necessary. * * @param[in] opcode Operation code. Sending first. * @param[in] length Length of the data to send and opcode. See @ref nrf_qspi_cinstr_len_t. * @param[in] p_tx_buffer Pointer to input data array. * * @retval NRFX_SUCCESS If the operation was successful. * @retval NRFX_ERROR_BUSY If the driver currently handles another operation. */ nrfx_err_t nrfx_qspi_cinstr_quick_send(uint8_t opcode, nrf_qspi_cinstr_len_t length, void const * p_tx_buffer); void nrfx_qspi_irq_handler(void); /** @} */ #ifdef __cplusplus } #endif #endif // NRFX_QSPI_H__