Driver for CC3000 Wi-Fi module

Dependencies:   NVIC_set_all_priorities

Dependents:   CC3000_Simple_Socket Wi-Go_IOT_Demo

Information

The current code has been reworked to a full object oriented application and contains an mbed socket compatible API.

CC3000 Wi-Fi module library

Info

This is the low level driver for TI's SimpleLink CC3000 device.
Port from Avnet's Wi-Go KEIL code (based on TI's CC3000 code).
Special thanks to Jim Carver from Avnet for providing the Wi-Go board and for his assistance.

Differences with TI's original code

The code functionality stays exactly the same.
In order to make it easier to use the code, following changes were made :

  • Addition of a tool to shift all IRQ priorities to a lower level since it is very important to keep the SPI handler at the highest system priority, the WLAN interrupt the second highest and all other system interrupts at a lower priority, so their handlers can be preempted by the CC3000 interrupts.
  • Addition of low level I/O controls and conditional compiler controls in cc3000_common.h.
  • CC3000 initialisation, pin declarations, SPI and WLAN irq priorities are set in Init_HostDriver , we need to call this function at the start of the main function.
  • The SPI and HCI code are joined into one file.
  • The include list has been rearranged - Only #include "wlan.h" is needed in the user API.
  • Part of the CC3000's user eeprom memory is used to store additional info (52 bytes in NVMEM_USER_FILE_1):
# bytesDescriptionInfo
1First time config parameterUseful when connecting
2Firmware updater versionused with the Firmware update tool
2Service Pack versionused with the Firmware update tool
3Driver Versionused with the Firmware update tool
3Firmware Versionused with the Firmware update tool
1CIK validation (Client Interface Key)
40CIK data (Client Interface Key)used with the exosite

Using the Library

A user API is needed to access the CC3000 functions.
Examples:

Using the library with other processors

cc3000_common.cpp loads the irq tool for all targets:
All current mbed targets are supported by this library.

#include "NVIC_set_all_priorities.h"


All low level settings that need to change are available in cc3000_common.h

//*****************************************************************************
//              PIN CONTROLS & COMPILE CONTROLS
//*****************************************************************************
// Compiler control
#define CC3000_UNENCRYPTED_SMART_CONFIG   // No encryption
//#define CC3000_TINY_DRIVER                // Driver for small memory model CPUs

//Interrupt controls
#define NVIC_ALL_IRQ        NVIC_set_all_irq_priorities(3);         // Set ALL interrupt priorities to level 3
#define NVIC_SPI_IRQ        NVIC_SetPriority(SPI0_IRQn, 0x0);       // Wi-Fi SPI interrupt must be higher priority than SysTick
#define NVIC_PORT_IRQ       NVIC_SetPriority(PORTA_IRQn, 0x1);
#define NVIC_SYSTICK_IRQ    NVIC_SetPriority(SysTick_IRQn, 0x2);    // SysTick set to lower priority than Wi-Fi SPI bus interrupt
//#define NVIC_ADC_IRQ        NVIC_SetPriority(ADC0_IRQn, 0x3);       // ADC is the lowest of all

// Wlan controls
#define WLAN_ISF_PCR        PORTA->PCR[16]
#define WLAN_ISF_ISFR       PORTA->ISFR
#define WLAN_ISF_MASK       (1<<16)

#define WLAN_ASSERT_CS      wlan_cs = 0;   //CS : active low
#define WLAN_DEASSERT_CS    wlan_cs = 1;

#define WLAN_ASSERT_EN      wlan_en = 1;   //EN : active high
#define WLAN_DEASSERT_EN    wlan_en = 0;

#define WLAN_READ_IRQ       wlan_int

#define WLAN_ENABLE_IRQ     wlan_int.fall(&WLAN_IRQHandler);
#define WLAN_DISABLE_IRQ    wlan_int.fall(NULL);

#define WLAN_IRQ_PIN_CREATE         InterruptIn wlan_int (PTA16);
#define WLAN_EN_PIN_CREATE          DigitalOut  wlan_en  (PTA13);
#define WLAN_CS_PIN_CREATE          DigitalOut  wlan_cs  (PTD0);
#define WLAN_SPI_PORT_CREATE        SPI wlan(PTD2, PTD3, PTC5); // mosi, miso, sclk

#define WLAN_SPI_PORT_INIT          wlan.format(8,1);
#define WLAN_SPI_SET_FREQ           wlan.frequency(12000000);
#define WLAN_SPI_SET_IRQ_HANDLER    wlan_int.fall(&WLAN_IRQHandler);

#define WLAN_SPI_WRITE              wlan.write(*data++);
#define WLAN_SPI_READ               wlan.write(0x03);          // !! DO NOT MODIFY the 0x03 parameter (CC3000 will not respond).

API documentation

Due to a little problem with the links on the mbed site, the API documentation is not directly accessible (will be solved in a next release).
Currently, it is only accessible by adding modules.html to the API doc link: http://mbed.org/users/frankvnk/code/CC3000_Hostdriver/docs/tip/modules.html

Committer:
frankvnk
Date:
Thu Jul 04 08:10:21 2013 +0000
Revision:
1:bbcaf0b2f367
Parent:
0:c44f0314d6ec
Child:
4:d8255a5aad46
Code cleanup - test printfs added

Who changed what in which revision?

UserRevisionLine numberNew contents of line
frankvnk 0:c44f0314d6ec 1 /*****************************************************************************
frankvnk 0:c44f0314d6ec 2 *
frankvnk 0:c44f0314d6ec 3 * nvmem.h - CC3000 Host Driver Implementation.
frankvnk 0:c44f0314d6ec 4 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
frankvnk 0:c44f0314d6ec 5 *
frankvnk 0:c44f0314d6ec 6 * Redistribution and use in source and binary forms, with or without
frankvnk 0:c44f0314d6ec 7 * modification, are permitted provided that the following conditions
frankvnk 0:c44f0314d6ec 8 * are met:
frankvnk 0:c44f0314d6ec 9 *
frankvnk 0:c44f0314d6ec 10 * Redistributions of source code must retain the above copyright
frankvnk 0:c44f0314d6ec 11 * notice, this list of conditions and the following disclaimer.
frankvnk 0:c44f0314d6ec 12 *
frankvnk 0:c44f0314d6ec 13 * Redistributions in binary form must reproduce the above copyright
frankvnk 0:c44f0314d6ec 14 * notice, this list of conditions and the following disclaimer in the
frankvnk 0:c44f0314d6ec 15 * documentation and/or other materials provided with the
frankvnk 0:c44f0314d6ec 16 * distribution.
frankvnk 0:c44f0314d6ec 17 *
frankvnk 0:c44f0314d6ec 18 * Neither the name of Texas Instruments Incorporated nor the names of
frankvnk 0:c44f0314d6ec 19 * its contributors may be used to endorse or promote products derived
frankvnk 0:c44f0314d6ec 20 * from this software without specific prior written permission.
frankvnk 0:c44f0314d6ec 21 *
frankvnk 0:c44f0314d6ec 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
frankvnk 0:c44f0314d6ec 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
frankvnk 0:c44f0314d6ec 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
frankvnk 0:c44f0314d6ec 25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
frankvnk 0:c44f0314d6ec 26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
frankvnk 0:c44f0314d6ec 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
frankvnk 0:c44f0314d6ec 28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
frankvnk 0:c44f0314d6ec 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
frankvnk 0:c44f0314d6ec 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
frankvnk 0:c44f0314d6ec 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
frankvnk 0:c44f0314d6ec 32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
frankvnk 0:c44f0314d6ec 33 *
frankvnk 0:c44f0314d6ec 34 *****************************************************************************/
frankvnk 0:c44f0314d6ec 35 #ifndef __NVRAM_H__
frankvnk 0:c44f0314d6ec 36 #define __NVRAM_H__
frankvnk 0:c44f0314d6ec 37
frankvnk 0:c44f0314d6ec 38 //#include "mbed.h"
frankvnk 0:c44f0314d6ec 39 #include "GlobalAssigns.h"
frankvnk 0:c44f0314d6ec 40 #include "cc3000_common.h"
frankvnk 0:c44f0314d6ec 41 #include "hci.h"
frankvnk 0:c44f0314d6ec 42 #include "socket.h"
frankvnk 0:c44f0314d6ec 43 #include "evnt_handler.h"
frankvnk 0:c44f0314d6ec 44
frankvnk 0:c44f0314d6ec 45
frankvnk 0:c44f0314d6ec 46 /** CC3000 Host driver - NVMEM
frankvnk 0:c44f0314d6ec 47 *
frankvnk 0:c44f0314d6ec 48 */
frankvnk 0:c44f0314d6ec 49 //*****************************************************************************
frankvnk 0:c44f0314d6ec 50 //
frankvnk 0:c44f0314d6ec 51 // If building with a C++ compiler, make all of the definitions in this header
frankvnk 0:c44f0314d6ec 52 // have a C binding.
frankvnk 0:c44f0314d6ec 53 //
frankvnk 0:c44f0314d6ec 54 //*****************************************************************************
frankvnk 0:c44f0314d6ec 55 #ifdef __cplusplus
frankvnk 0:c44f0314d6ec 56 extern "C" {
frankvnk 0:c44f0314d6ec 57 #endif
frankvnk 0:c44f0314d6ec 58
frankvnk 0:c44f0314d6ec 59
frankvnk 0:c44f0314d6ec 60 //*****************************************************************************
frankvnk 0:c44f0314d6ec 61 //
frankvnk 0:c44f0314d6ec 62 //! \addtogroup nvmem_api
frankvnk 0:c44f0314d6ec 63 //! @{
frankvnk 0:c44f0314d6ec 64 //
frankvnk 0:c44f0314d6ec 65 //*****************************************************************************
frankvnk 0:c44f0314d6ec 66
frankvnk 0:c44f0314d6ec 67 /****************************************************************************
frankvnk 0:c44f0314d6ec 68 **
frankvnk 0:c44f0314d6ec 69 ** Definitions for File IDs
frankvnk 0:c44f0314d6ec 70 **
frankvnk 0:c44f0314d6ec 71 ****************************************************************************/
frankvnk 0:c44f0314d6ec 72 /* NVMEM file ID - system files*/
frankvnk 0:c44f0314d6ec 73 #define NVMEM_NVS_FILEID (0)
frankvnk 1:bbcaf0b2f367 74 #define NVMEM_NVS_SHADOW_FILEID (1)
frankvnk 0:c44f0314d6ec 75 #define NVMEM_WLAN_CONFIG_FILEID (2)
frankvnk 1:bbcaf0b2f367 76 #define NVMEM_WLAN_CONFIG_SHADOW_FILEID (3)
frankvnk 1:bbcaf0b2f367 77 #define NVMEM_WLAN_DRIVER_SP_FILEID (4)
frankvnk 1:bbcaf0b2f367 78 #define NVMEM_WLAN_FW_SP_FILEID (5)
frankvnk 0:c44f0314d6ec 79 #define NVMEM_MAC_FILEID (6)
frankvnk 1:bbcaf0b2f367 80 #define NVMEM_FRONTEND_VARS_FILEID (7)
frankvnk 1:bbcaf0b2f367 81 #define NVMEM_IP_CONFIG_FILEID (8)
frankvnk 1:bbcaf0b2f367 82 #define NVMEM_IP_CONFIG_SHADOW_FILEID (9)
frankvnk 1:bbcaf0b2f367 83 #define NVMEM_BOOTLOADER_SP_FILEID (10)
frankvnk 1:bbcaf0b2f367 84 #define NVMEM_RM_FILEID (11)
frankvnk 0:c44f0314d6ec 85
frankvnk 0:c44f0314d6ec 86 /* NVMEM file ID - user files*/
frankvnk 1:bbcaf0b2f367 87 #define NVMEM_AES128_KEY_FILEID (12)
frankvnk 1:bbcaf0b2f367 88 #define NVMEM_SHARED_MEM_FILEID (13)
frankvnk 1:bbcaf0b2f367 89 #define NVMEM_USER_FILE_1_FILEID (14)
frankvnk 1:bbcaf0b2f367 90 #define NVMEM_USER_FILE_2_FILEID (15)
frankvnk 0:c44f0314d6ec 91
frankvnk 0:c44f0314d6ec 92 /* max entry in order to invalid nvmem */
frankvnk 0:c44f0314d6ec 93 #define NVMEM_MAX_ENTRY (16)
frankvnk 0:c44f0314d6ec 94
frankvnk 0:c44f0314d6ec 95
frankvnk 0:c44f0314d6ec 96 //*****************************************************************************
frankvnk 0:c44f0314d6ec 97 //
frankvnk 0:c44f0314d6ec 98 //! nvmem_read
frankvnk 0:c44f0314d6ec 99 //!
frankvnk 0:c44f0314d6ec 100 //! @param ulFileId nvmem file id:\n
frankvnk 0:c44f0314d6ec 101 //! NVMEM_NVS_FILEID, NVMEM_NVS_SHADOW_FILEID,
frankvnk 0:c44f0314d6ec 102 //! NVMEM_WLAN_CONFIG_FILEID, NVMEM_WLAN_CONFIG_SHADOW_FILEID,
frankvnk 0:c44f0314d6ec 103 //! NVMEM_WLAN_DRIVER_SP_FILEID, NVMEM_WLAN_FW_SP_FILEID,
frankvnk 0:c44f0314d6ec 104 //! NVMEM_MAC_FILEID, NVMEM_FRONTEND_VARS_FILEID,
frankvnk 0:c44f0314d6ec 105 //! NVMEM_IP_CONFIG_FILEID, NVMEM_IP_CONFIG_SHADOW_FILEID,
frankvnk 0:c44f0314d6ec 106 //! NVMEM_BOOTLOADER_SP_FILEID, NVMEM_RM_FILEID,
frankvnk 0:c44f0314d6ec 107 //! and user files 12-15.
frankvnk 1:bbcaf0b2f367 108 //! @param ulLength number of bytes to read
frankvnk 1:bbcaf0b2f367 109 //! @param ulOffset ulOffset in file from where to read
frankvnk 1:bbcaf0b2f367 110 //! @param buff output buffer pointer
frankvnk 0:c44f0314d6ec 111 //!
frankvnk 0:c44f0314d6ec 112 //! @return number of bytes read, otherwise error.
frankvnk 0:c44f0314d6ec 113 //!
frankvnk 0:c44f0314d6ec 114 //! @brief Reads data from the file referred by the ulFileId parameter.
frankvnk 0:c44f0314d6ec 115 //! Reads data from file ulOffset till length. Err if the file can't
frankvnk 0:c44f0314d6ec 116 //! be used, is invalid, or if the read is out of bounds.
frankvnk 0:c44f0314d6ec 117 //!
frankvnk 0:c44f0314d6ec 118 //*****************************************************************************
frankvnk 0:c44f0314d6ec 119
frankvnk 0:c44f0314d6ec 120 extern signed long nvmem_read(unsigned long file_id, unsigned long length, unsigned long offset, unsigned char *buff);
frankvnk 0:c44f0314d6ec 121
frankvnk 0:c44f0314d6ec 122 //*****************************************************************************
frankvnk 0:c44f0314d6ec 123 //
frankvnk 0:c44f0314d6ec 124 //! nvmem_write
frankvnk 0:c44f0314d6ec 125 //!
frankvnk 0:c44f0314d6ec 126 //! @param ulFileId nvmem file id:\n
frankvnk 0:c44f0314d6ec 127 //! NVMEM_WLAN_DRIVER_SP_FILEID, NVMEM_WLAN_FW_SP_FILEID,
frankvnk 0:c44f0314d6ec 128 //! NVMEM_MAC_FILEID, NVMEM_BOOTLOADER_SP_FILEID,
frankvnk 0:c44f0314d6ec 129 //! and user files 12-15.
frankvnk 0:c44f0314d6ec 130 //! @param ulLength number of bytes to write
frankvnk 0:c44f0314d6ec 131 //! @param ulEntryOffset offset in file to start write operation from
frankvnk 0:c44f0314d6ec 132 //! @param buff data to write
frankvnk 0:c44f0314d6ec 133 //!
frankvnk 1:bbcaf0b2f367 134 //! @return on success 0, error otherwise.
frankvnk 0:c44f0314d6ec 135 //!
frankvnk 0:c44f0314d6ec 136 //! @brief Write data to nvmem.
frankvnk 0:c44f0314d6ec 137 //! writes data to file referred by the ulFileId parameter.
frankvnk 0:c44f0314d6ec 138 //! Writes data to file ulOffset till ulLength.The file id will be
frankvnk 0:c44f0314d6ec 139 //! marked invalid till the write is done. The file entry doesn't
frankvnk 0:c44f0314d6ec 140 //! need to be valid - only allocated.
frankvnk 0:c44f0314d6ec 141 //!
frankvnk 0:c44f0314d6ec 142 //*****************************************************************************
frankvnk 0:c44f0314d6ec 143
frankvnk 0:c44f0314d6ec 144 extern signed long nvmem_write(unsigned long ulFileId, unsigned long ulLength, unsigned long ulEntryOffset, unsigned char *buff);
frankvnk 0:c44f0314d6ec 145
frankvnk 0:c44f0314d6ec 146
frankvnk 0:c44f0314d6ec 147 //*****************************************************************************
frankvnk 0:c44f0314d6ec 148 //
frankvnk 0:c44f0314d6ec 149 //! nvmem_set_mac_address
frankvnk 0:c44f0314d6ec 150 //!
frankvnk 1:bbcaf0b2f367 151 //! @param mac mac address to be set
frankvnk 0:c44f0314d6ec 152 //!
frankvnk 1:bbcaf0b2f367 153 //! @return on success 0, error otherwise.
frankvnk 0:c44f0314d6ec 154 //!
frankvnk 0:c44f0314d6ec 155 //! @brief Write MAC address to EEPROM.
frankvnk 0:c44f0314d6ec 156 //! mac address as appears over the air (OUI first)
frankvnk 0:c44f0314d6ec 157 //!
frankvnk 0:c44f0314d6ec 158 //*****************************************************************************
frankvnk 1:bbcaf0b2f367 159 extern unsigned char nvmem_set_mac_address(unsigned char *mac);
frankvnk 0:c44f0314d6ec 160
frankvnk 0:c44f0314d6ec 161
frankvnk 0:c44f0314d6ec 162 //*****************************************************************************
frankvnk 0:c44f0314d6ec 163 //
frankvnk 0:c44f0314d6ec 164 //! nvmem_get_mac_address
frankvnk 0:c44f0314d6ec 165 //!
frankvnk 0:c44f0314d6ec 166 //! @param[out] mac mac address
frankvnk 0:c44f0314d6ec 167 //!
frankvnk 1:bbcaf0b2f367 168 //! @return on success 0, error otherwise.
frankvnk 0:c44f0314d6ec 169 //!
frankvnk 0:c44f0314d6ec 170 //! @brief Read MAC address from EEPROM.
frankvnk 0:c44f0314d6ec 171 //! mac address as appears over the air (OUI first)
frankvnk 0:c44f0314d6ec 172 //!
frankvnk 0:c44f0314d6ec 173 //*****************************************************************************
frankvnk 1:bbcaf0b2f367 174 extern unsigned char nvmem_get_mac_address(unsigned char *mac);
frankvnk 0:c44f0314d6ec 175
frankvnk 0:c44f0314d6ec 176
frankvnk 0:c44f0314d6ec 177 //*****************************************************************************
frankvnk 0:c44f0314d6ec 178 //
frankvnk 0:c44f0314d6ec 179 //! nvmem_write_patch
frankvnk 0:c44f0314d6ec 180 //!
frankvnk 0:c44f0314d6ec 181 //! @param ulFileId nvmem file id:\n
frankvnk 0:c44f0314d6ec 182 //! NVMEM_WLAN_DRIVER_SP_FILEID, NVMEM_WLAN_FW_SP_FILEID,
frankvnk 0:c44f0314d6ec 183 //! @param spLength number of bytes to write
frankvnk 0:c44f0314d6ec 184 //! @param spData SP data to write
frankvnk 0:c44f0314d6ec 185 //!
frankvnk 1:bbcaf0b2f367 186 //! @return on success 0, error otherwise.
frankvnk 0:c44f0314d6ec 187 //!
frankvnk 0:c44f0314d6ec 188 //! @brief program a patch to a specific file ID.
frankvnk 0:c44f0314d6ec 189 //! The SP data is assumed to be organized in 2-dimensional.
frankvnk 0:c44f0314d6ec 190 //! Each line is SP_PORTION_SIZE bytes long. Actual programming is
frankvnk 0:c44f0314d6ec 191 //! applied in SP_PORTION_SIZE bytes portions.
frankvnk 0:c44f0314d6ec 192 //!
frankvnk 0:c44f0314d6ec 193 //*****************************************************************************
frankvnk 1:bbcaf0b2f367 194 extern unsigned char nvmem_write_patch(unsigned long ulFileId, unsigned long spLength, const unsigned char *spData);
frankvnk 0:c44f0314d6ec 195
frankvnk 0:c44f0314d6ec 196
frankvnk 0:c44f0314d6ec 197 //*****************************************************************************
frankvnk 0:c44f0314d6ec 198 //
frankvnk 0:c44f0314d6ec 199 //! nvmem_read_sp_version
frankvnk 0:c44f0314d6ec 200 //!
frankvnk 0:c44f0314d6ec 201 //! @param[out] patchVer first number indicates package ID and the second
frankvnk 0:c44f0314d6ec 202 //! number indicates package build number
frankvnk 0:c44f0314d6ec 203 //!
frankvnk 1:bbcaf0b2f367 204 //! @return on success 0, error otherwise.
frankvnk 0:c44f0314d6ec 205 //!
frankvnk 0:c44f0314d6ec 206 //! @brief Read patch version. read package version (WiFi FW patch,
frankvnk 0:c44f0314d6ec 207 //! driver-supplicant-NS patch, bootloader patch)
frankvnk 0:c44f0314d6ec 208 //!
frankvnk 0:c44f0314d6ec 209 //*****************************************************************************
frankvnk 0:c44f0314d6ec 210 #ifndef CC3000_TINY_DRIVER
frankvnk 1:bbcaf0b2f367 211 extern unsigned char nvmem_read_sp_version(unsigned char* patchVer);
frankvnk 0:c44f0314d6ec 212 #endif
frankvnk 0:c44f0314d6ec 213
frankvnk 0:c44f0314d6ec 214 //*****************************************************************************
frankvnk 0:c44f0314d6ec 215 //
frankvnk 0:c44f0314d6ec 216 //! nvmem_create_entry
frankvnk 0:c44f0314d6ec 217 //!
frankvnk 0:c44f0314d6ec 218 //! @param ulFileId nvmem file Id:\n
frankvnk 0:c44f0314d6ec 219 //! * NVMEM_AES128_KEY_FILEID: 12
frankvnk 0:c44f0314d6ec 220 //! * NVMEM_SHARED_MEM_FILEID: 13
frankvnk 0:c44f0314d6ec 221 //! * and fileIDs 14 and 15
frankvnk 0:c44f0314d6ec 222 //! @param ulNewLen entry ulLength
frankvnk 0:c44f0314d6ec 223 //!
frankvnk 1:bbcaf0b2f367 224 //! @return on success 0, error otherwise.
frankvnk 0:c44f0314d6ec 225 //!
frankvnk 0:c44f0314d6ec 226 //! @brief Create new file entry and allocate space on the NVMEM.
frankvnk 0:c44f0314d6ec 227 //! Applies only to user files.
frankvnk 0:c44f0314d6ec 228 //! Modify the size of file.
frankvnk 0:c44f0314d6ec 229 //! If the entry is unallocated - allocate it to size
frankvnk 0:c44f0314d6ec 230 //! ulNewLen (marked invalid).
frankvnk 0:c44f0314d6ec 231 //! If it is allocated then deallocate it first.
frankvnk 0:c44f0314d6ec 232 //! To just mark the file as invalid without resizing -
frankvnk 0:c44f0314d6ec 233 //! set ulNewLen=0.
frankvnk 0:c44f0314d6ec 234 //!
frankvnk 0:c44f0314d6ec 235 //*****************************************************************************
frankvnk 0:c44f0314d6ec 236 extern signed long nvmem_create_entry(unsigned long file_id, unsigned long newlen);
frankvnk 0:c44f0314d6ec 237
frankvnk 0:c44f0314d6ec 238
frankvnk 0:c44f0314d6ec 239 //*****************************************************************************
frankvnk 0:c44f0314d6ec 240 //
frankvnk 0:c44f0314d6ec 241 // Mark the end of the C bindings section for C++ compilers.
frankvnk 0:c44f0314d6ec 242 //
frankvnk 0:c44f0314d6ec 243 //*****************************************************************************
frankvnk 0:c44f0314d6ec 244
frankvnk 0:c44f0314d6ec 245
frankvnk 0:c44f0314d6ec 246 //*****************************************************************************
frankvnk 0:c44f0314d6ec 247 //
frankvnk 0:c44f0314d6ec 248 // Close the Doxygen group.
frankvnk 0:c44f0314d6ec 249 //! @}
frankvnk 0:c44f0314d6ec 250 //
frankvnk 0:c44f0314d6ec 251 //*****************************************************************************
frankvnk 0:c44f0314d6ec 252
frankvnk 0:c44f0314d6ec 253
frankvnk 0:c44f0314d6ec 254 #ifdef __cplusplus
frankvnk 0:c44f0314d6ec 255 }
frankvnk 0:c44f0314d6ec 256 #endif // __cplusplus
frankvnk 0:c44f0314d6ec 257
frankvnk 0:c44f0314d6ec 258 #endif // __NVRAM_H__
frankvnk 0:c44f0314d6ec 259
frankvnk 0:c44f0314d6ec 260