nRF52840: Added flash_api implementation

Author: kl-cruz

targets/TARGET_NORDIC/TARGET_NRF5/objects.h

@@ -1,28 +1,28 @@
-/* 
+/*
  * Copyright (c) 2013 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 
+ *
+ *   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 
+ *   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 
+ *   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 
+ *   4. This software, with or without modification, must only be used with a
  *      Nordic Semiconductor ASA integrated circuit.
  *
- *   5. Any software provided in binary or object form under this license must not be reverse 
- *      engineered, decompiled, modified and/or disassembled. 
- * 
+ *   5. Any software provided in binary or object form under this license must not be reverse
+ *      engineered, decompiled, modified and/or disassembled.
+ *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
@@ -33,7 +33,7 @@
  * 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 MBED_OBJECTS_H
@@ -81,6 +81,10 @@ struct gpio_irq_s {
     uint32_t ch;
 };
 
+struct flash_s
+{
+    uint32_t placeholder;
+};
 
 #include "gpio_object.h"
 

targets/TARGET_NORDIC/TARGET_NRF5_SDK13/flash_api.c

@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2017 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 or object form under this license must not be reverse
+ *      engineered, decompiled, modified and/or disassembled.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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.
+ *
+ */
+
+#include "flash_api.h"
+#include "nrf_nvmc.h"
+
+#if DEVICE_FLASH
+
+int32_t flash_init(flash_t *obj)
+{
+    (void)(obj);
+    return 0;
+}
+
+int32_t flash_free(flash_t *obj)
+{
+    (void)(obj);
+    return 0;
+}
+
+int32_t flash_erase_sector(flash_t *obj, uint32_t address)
+{
+    (void)(obj);
+    nrf_nvmc_page_erase(address);
+    return 0;
+}
+
+int32_t flash_program_page(flash_t *obj, uint32_t address, const uint8_t *data, uint32_t size)
+{
+    /* We will use *_words function to speed up flashing code. Word means 32bit -> 4B
+     * or sizeof(uint32_t). */
+    nrf_nvmc_write_words(address, data, (size / sizeof(uint32_t)));
+    return 0;
+}
+
+uint32_t flash_get_size(const flash_t *obj)
+{
+    (void)(obj);
+    /* Just count flash size. */
+    return NRF_FICR->CODESIZE * NRF_FICR->CODEPAGESIZE;
+}
+
+uint32_t flash_get_sector_size(const flash_t *obj, uint32_t address)
+{
+    (void)(obj);
+    (void)(address);
+    /* Test if passed address is in flash space. */
+    if (address < flash_get_size(obj))
+    {
+        return NRF_FICR->CODEPAGESIZE;
+    }
+    /* Something goes wrong, return invalid size error code. */
+    return MBED_FLASH_INVALID_SIZE;
+}
+
+uint32_t flash_get_page_size(const flash_t *obj)
+{
+    (void)(obj);
+    return NRF_FICR->CODEPAGESIZE;
+}
+
+uint32_t flash_get_start_address(const flash_t *obj)
+{
+    return 0;
+}
+
+#endif
+
+/** @}*/

targets/targets.json

@@ -2782,7 +2782,7 @@
         "supported_form_factors": ["ARDUINO"],
         "inherits": ["MCU_NRF52840"],
         "macros_add": ["BOARD_PCA10056", "CONFIG_GPIO_AS_PINRESET", "SWI_DISABLE0", "NRF52_ERRATA_20"],
-        "device_has": ["ANALOGIN", "ERROR_PATTERN", "I2C", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SERIAL_FC", "SLEEP", "SPI", "SPI_ASYNCH", "SPISLAVE"],
+        "device_has": ["FLASH", "ANALOGIN", "ERROR_PATTERN", "I2C", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SERIAL_FC", "SLEEP", "SPI", "SPI_ASYNCH", "SPISLAVE"],
         "release_versions": ["2", "5"],
         "device_name": "nRF52840_xxAA"
     },