Amit Gandhi / sensen_copy_2

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targets/TARGET_Maxim/TARGET_MAX32625/mxc/flc.c@178:c26431f84b0d, 2017-11-09 (annotated)

Committer:
amithy
Date:
Thu Nov 09 22:14:37 2017 +0000
Revision:
178:c26431f84b0d
Parent:
150:02e0a0aed4ec 
test export

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 150:02e0a0aed4ec 1 /**
<> 150:02e0a0aed4ec 2 * @file flc.c
<> 150:02e0a0aed4ec 3 * @brief This file contains the function implementations for the Flash
<> 150:02e0a0aed4ec 4 * Controller peripheral module.
<> 150:02e0a0aed4ec 5 */
<> 150:02e0a0aed4ec 6
<> 150:02e0a0aed4ec 7 /* ****************************************************************************
<> 150:02e0a0aed4ec 8 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
<> 150:02e0a0aed4ec 9 *
<> 150:02e0a0aed4ec 10 * Permission is hereby granted, free of charge, to any person obtaining a
<> 150:02e0a0aed4ec 11 * copy of this software and associated documentation files (the "Software"),
<> 150:02e0a0aed4ec 12 * to deal in the Software without restriction, including without limitation
<> 150:02e0a0aed4ec 13 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
<> 150:02e0a0aed4ec 14 * and/or sell copies of the Software, and to permit persons to whom the
<> 150:02e0a0aed4ec 15 * Software is furnished to do so, subject to the following conditions:
<> 150:02e0a0aed4ec 16 *
<> 150:02e0a0aed4ec 17 * The above copyright notice and this permission notice shall be included
<> 150:02e0a0aed4ec 18 * in all copies or substantial portions of the Software.
<> 150:02e0a0aed4ec 19 *
<> 150:02e0a0aed4ec 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
<> 150:02e0a0aed4ec 21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
<> 150:02e0a0aed4ec 22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
<> 150:02e0a0aed4ec 23 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
<> 150:02e0a0aed4ec 24 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
<> 150:02e0a0aed4ec 25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
<> 150:02e0a0aed4ec 26 * OTHER DEALINGS IN THE SOFTWARE.
<> 150:02e0a0aed4ec 27 *
<> 150:02e0a0aed4ec 28 * Except as contained in this notice, the name of Maxim Integrated
<> 150:02e0a0aed4ec 29 * Products, Inc. shall not be used except as stated in the Maxim Integrated
<> 150:02e0a0aed4ec 30 * Products, Inc. Branding Policy.
<> 150:02e0a0aed4ec 31 *
<> 150:02e0a0aed4ec 32 * The mere transfer of this software does not imply any licenses
<> 150:02e0a0aed4ec 33 * of trade secrets, proprietary technology, copyrights, patents,
<> 150:02e0a0aed4ec 34 * trademarks, maskwork rights, or any other form of intellectual
<> 150:02e0a0aed4ec 35 * property whatsoever. Maxim Integrated Products, Inc. retains all
<> 150:02e0a0aed4ec 36 * ownership rights.
<> 150:02e0a0aed4ec 37 *
<> 150:02e0a0aed4ec 38 * $Date: 2016-08-02 13:46:43 -0500 (Tue, 02 Aug 2016) $
<> 150:02e0a0aed4ec 39 * $Revision: 23898 $
<> 150:02e0a0aed4ec 40 *
<> 150:02e0a0aed4ec 41 *************************************************************************** */
<> 150:02e0a0aed4ec 42
<> 150:02e0a0aed4ec 43 /* **** Includes **** */
<> 150:02e0a0aed4ec 44 #include "mxc_config.h"
<> 150:02e0a0aed4ec 45 #include "flc.h"
<> 150:02e0a0aed4ec 46
<> 150:02e0a0aed4ec 47
<> 150:02e0a0aed4ec 48 /**
<> 150:02e0a0aed4ec 49 * @ingroup flc
<> 150:02e0a0aed4ec 50 * @{
<> 150:02e0a0aed4ec 51 */
<> 150:02e0a0aed4ec 52
<> 150:02e0a0aed4ec 53 /* **** Definitions **** */
<> 150:02e0a0aed4ec 54
<> 150:02e0a0aed4ec 55 /* **** Globals **** */
<> 150:02e0a0aed4ec 56
<> 150:02e0a0aed4ec 57 /* **** Functions **** */
<> 150:02e0a0aed4ec 58
<> 150:02e0a0aed4ec 59 /* ************************************************************************* */
<> 150:02e0a0aed4ec 60 #if defined ( __GNUC__ )
<> 150:02e0a0aed4ec 61 #undef IAR_PRAGMAS //Make sure this is not defined for GCC
<> 150:02e0a0aed4ec 62 #endif
<> 150:02e0a0aed4ec 63
<> 150:02e0a0aed4ec 64 #if IAR_PRAGMAS
<> 150:02e0a0aed4ec 65 // IAR memory section declaration for the in-system flash programming functions to be loaded in RAM.
<> 150:02e0a0aed4ec 66 #pragma section=".flashprog"
<> 150:02e0a0aed4ec 67 #endif
<> 150:02e0a0aed4ec 68 #if defined ( __GNUC__ )
<> 150:02e0a0aed4ec 69 __attribute__ ((section(".flashprog")))
<> 150:02e0a0aed4ec 70 #endif
<> 150:02e0a0aed4ec 71 /**
<> 150:02e0a0aed4ec 72 * @brief Return the status of the busy state of the flash controller.
<> 150:02e0a0aed4ec 73 *
<> 150:02e0a0aed4ec 74 * @return 0 Flash Controller is idle.
<> 150:02e0a0aed4ec 75 * @return Non-zero indicates the flash controller is performing an
<> 150:02e0a0aed4ec 76 * erase or write request.
<> 150:02e0a0aed4ec 77 */
<> 150:02e0a0aed4ec 78 __STATIC_INLINE int FLC_Busy(void)
<> 150:02e0a0aed4ec 79 {
<> 150:02e0a0aed4ec 80 return (MXC_FLC->ctrl & (MXC_F_FLC_CTRL_WRITE | MXC_F_FLC_CTRL_MASS_ERASE | MXC_F_FLC_CTRL_PAGE_ERASE));
<> 150:02e0a0aed4ec 81 }
<> 150:02e0a0aed4ec 82
<> 150:02e0a0aed4ec 83 /* ************************************************************************* */
<> 150:02e0a0aed4ec 84 #if IAR_PRAGMAS
<> 150:02e0a0aed4ec 85 // IAR memory section declaration for the in-system flash programming functions to be loaded in RAM.
<> 150:02e0a0aed4ec 86 #pragma section=".flashprog"
<> 150:02e0a0aed4ec 87 #endif
<> 150:02e0a0aed4ec 88 #if defined ( __GNUC__ )
<> 150:02e0a0aed4ec 89 __attribute__ ((section(".flashprog")))
<> 150:02e0a0aed4ec 90 #endif
<> 150:02e0a0aed4ec 91 int FLC_Init(void)
<> 150:02e0a0aed4ec 92 {
<> 150:02e0a0aed4ec 93 /* Check if the flash controller is busy */
<> 150:02e0a0aed4ec 94 if (FLC_Busy()) {
<> 150:02e0a0aed4ec 95 return E_BUSY;
<> 150:02e0a0aed4ec 96 }
<> 150:02e0a0aed4ec 97
<> 150:02e0a0aed4ec 98 /* Enable automatic calculation of the clock divider to generate a 1MHz clock from the APB clock */
<> 150:02e0a0aed4ec 99 MXC_FLC->perform |= MXC_F_FLC_PERFORM_AUTO_CLKDIV;
<> 150:02e0a0aed4ec 100
<> 150:02e0a0aed4ec 101 /* The flash controller will stall any reads while flash operations are in
<> 150:02e0a0aed4ec 102 * progress. Disable the legacy failure detection logic that would flag reads
<> 150:02e0a0aed4ec 103 * during flash operations as errors.
<> 150:02e0a0aed4ec 104 */
<> 150:02e0a0aed4ec 105 MXC_FLC->perform |= MXC_F_FLC_PERFORM_EN_PREVENT_FAIL;
<> 150:02e0a0aed4ec 106
<> 150:02e0a0aed4ec 107 return E_NO_ERROR;
<> 150:02e0a0aed4ec 108 }
<> 150:02e0a0aed4ec 109
<> 150:02e0a0aed4ec 110 /* ************************************************************************* */
<> 150:02e0a0aed4ec 111 #if IAR_PRAGMAS
<> 150:02e0a0aed4ec 112 // IAR memory section declaration for the in-system flash programming functions to be loaded in RAM.
<> 150:02e0a0aed4ec 113 #pragma section=".flashprog"
<> 150:02e0a0aed4ec 114 #endif
<> 150:02e0a0aed4ec 115 #if defined ( __GNUC__ )
<> 150:02e0a0aed4ec 116 __attribute__ ((section(".flashprog")))
<> 150:02e0a0aed4ec 117 #endif
<> 150:02e0a0aed4ec 118 int FLC_PageErase(uint32_t address, uint8_t erase_code, uint8_t unlock_key)
<> 150:02e0a0aed4ec 119 {
<> 150:02e0a0aed4ec 120 /* Check if the flash controller is busy */
<> 150:02e0a0aed4ec 121 if (FLC_Busy()) {
<> 150:02e0a0aed4ec 122 return E_BUSY;
<> 150:02e0a0aed4ec 123 }
<> 150:02e0a0aed4ec 124
<> 150:02e0a0aed4ec 125 /* Clear stale errors. Interrupt flags can only be written to zero, so this is safe */
<> 150:02e0a0aed4ec 126 MXC_FLC->intr &= ~MXC_F_FLC_INTR_FAILED_IF;
<> 150:02e0a0aed4ec 127
<> 150:02e0a0aed4ec 128 /* Unlock flash */
<> 150:02e0a0aed4ec 129 MXC_FLC->ctrl = (MXC_FLC->ctrl & ~MXC_F_FLC_CTRL_FLSH_UNLOCK) |
<> 150:02e0a0aed4ec 130 ((unlock_key << MXC_F_FLC_CTRL_FLSH_UNLOCK_POS) & MXC_F_FLC_CTRL_FLSH_UNLOCK);
<> 150:02e0a0aed4ec 131
<> 150:02e0a0aed4ec 132 /* Write the Erase Code */
<> 150:02e0a0aed4ec 133 MXC_FLC->ctrl = (MXC_FLC->ctrl & ~MXC_F_FLC_CTRL_ERASE_CODE) |
<> 150:02e0a0aed4ec 134 ((erase_code << MXC_F_FLC_CTRL_ERASE_CODE_POS) & MXC_F_FLC_CTRL_ERASE_CODE);
<> 150:02e0a0aed4ec 135
<> 150:02e0a0aed4ec 136 /* Erase the request page */
<> 150:02e0a0aed4ec 137 MXC_FLC->faddr = address;
<> 150:02e0a0aed4ec 138 MXC_FLC->ctrl |= MXC_F_FLC_CTRL_PAGE_ERASE;
<> 150:02e0a0aed4ec 139
<> 150:02e0a0aed4ec 140 /* Wait until flash operation is complete */
<> 150:02e0a0aed4ec 141 while (FLC_Busy());
<> 150:02e0a0aed4ec 142
<> 150:02e0a0aed4ec 143 /* Lock flash */
<> 150:02e0a0aed4ec 144 MXC_FLC->ctrl &= ~(MXC_F_FLC_CTRL_FLSH_UNLOCK | MXC_F_FLC_CTRL_ERASE_CODE);
<> 150:02e0a0aed4ec 145
<> 150:02e0a0aed4ec 146 /* Check for failures */
<> 150:02e0a0aed4ec 147 if (MXC_FLC->intr & MXC_F_FLC_INTR_FAILED_IF) {
<> 150:02e0a0aed4ec 148 /* Interrupt flags can only be written to zero, so this is safe */
<> 150:02e0a0aed4ec 149 MXC_FLC->intr &= ~MXC_F_FLC_INTR_FAILED_IF;
<> 150:02e0a0aed4ec 150 return E_UNKNOWN;
<> 150:02e0a0aed4ec 151 }
<> 150:02e0a0aed4ec 152
<> 150:02e0a0aed4ec 153 return E_NO_ERROR;
<> 150:02e0a0aed4ec 154 }
<> 150:02e0a0aed4ec 155
<> 150:02e0a0aed4ec 156 /* ************************************************************************* */
<> 150:02e0a0aed4ec 157 #if IAR_PRAGMAS
<> 150:02e0a0aed4ec 158 // IAR memory section declaration for the in-system flash programming functions to be loaded in RAM.
<> 150:02e0a0aed4ec 159 #pragma section=".flashprog"
<> 150:02e0a0aed4ec 160 #endif
<> 150:02e0a0aed4ec 161 #if defined ( __GNUC__ )
<> 150:02e0a0aed4ec 162 __attribute__ ((section(".flashprog")))
<> 150:02e0a0aed4ec 163 #endif
<> 150:02e0a0aed4ec 164 int FLC_Write(uint32_t address, const void *data, uint32_t length, uint8_t unlock_key)
<> 150:02e0a0aed4ec 165 {
<> 150:02e0a0aed4ec 166 uint32_t *ptr = (uint32_t*)data;
<> 150:02e0a0aed4ec 167
<> 150:02e0a0aed4ec 168 /* Can only write in full word units */
<> 150:02e0a0aed4ec 169 if ((address & 3) || (length & 3)) {
<> 150:02e0a0aed4ec 170 return E_BAD_PARAM;
<> 150:02e0a0aed4ec 171 }
<> 150:02e0a0aed4ec 172
<> 150:02e0a0aed4ec 173 if (length == 0) {
<> 150:02e0a0aed4ec 174 /* Nothing to do */
<> 150:02e0a0aed4ec 175 return E_NO_ERROR;
<> 150:02e0a0aed4ec 176 }
<> 150:02e0a0aed4ec 177
<> 150:02e0a0aed4ec 178 /* Check if the flash controller is busy */
<> 150:02e0a0aed4ec 179 if (FLC_Busy()) {
<> 150:02e0a0aed4ec 180 return E_BUSY;
<> 150:02e0a0aed4ec 181 }
<> 150:02e0a0aed4ec 182
<> 150:02e0a0aed4ec 183 /* Clear stale errors. Interrupt flags can only be written to zero, so this is safe */
<> 150:02e0a0aed4ec 184 MXC_FLC->intr &= ~MXC_F_FLC_INTR_FAILED_IF;
<> 150:02e0a0aed4ec 185
<> 150:02e0a0aed4ec 186 /* Unlock flash */
<> 150:02e0a0aed4ec 187 MXC_FLC->ctrl = (MXC_FLC->ctrl & ~MXC_F_FLC_CTRL_FLSH_UNLOCK) |
<> 150:02e0a0aed4ec 188 ((unlock_key << MXC_F_FLC_CTRL_FLSH_UNLOCK_POS) & MXC_F_FLC_CTRL_FLSH_UNLOCK);
<> 150:02e0a0aed4ec 189
<> 150:02e0a0aed4ec 190 /* Set the address to write and enable auto increment */
<> 150:02e0a0aed4ec 191 MXC_FLC->faddr = address;
<> 150:02e0a0aed4ec 192 MXC_FLC->ctrl |= MXC_F_FLC_CTRL_AUTO_INCRE_MODE;
<> 150:02e0a0aed4ec 193 uint32_t write_cmd = MXC_FLC->ctrl | MXC_F_FLC_CTRL_WRITE;
<> 150:02e0a0aed4ec 194
<> 150:02e0a0aed4ec 195 for (; length > 0; length -= 4) {
<> 150:02e0a0aed4ec 196 /* Perform the write */
<> 150:02e0a0aed4ec 197 MXC_FLC->fdata = *ptr++;
<> 150:02e0a0aed4ec 198 MXC_FLC->ctrl = write_cmd;
<> 150:02e0a0aed4ec 199 while (FLC_Busy());
<> 150:02e0a0aed4ec 200 }
<> 150:02e0a0aed4ec 201
<> 150:02e0a0aed4ec 202 /* Lock flash */
<> 150:02e0a0aed4ec 203 MXC_FLC->ctrl &= ~MXC_F_FLC_CTRL_FLSH_UNLOCK;
<> 150:02e0a0aed4ec 204
<> 150:02e0a0aed4ec 205 /* Check for failures */
<> 150:02e0a0aed4ec 206 if (MXC_FLC->intr & MXC_F_FLC_INTR_FAILED_IF) {
<> 150:02e0a0aed4ec 207 /* Interrupt flags can only be written to zero, so this is safe */
<> 150:02e0a0aed4ec 208 MXC_FLC->intr &= ~MXC_F_FLC_INTR_FAILED_IF;
<> 150:02e0a0aed4ec 209 return E_UNKNOWN;
<> 150:02e0a0aed4ec 210 }
<> 150:02e0a0aed4ec 211
<> 150:02e0a0aed4ec 212 return E_NO_ERROR;
<> 150:02e0a0aed4ec 213 }
<> 150:02e0a0aed4ec 214
<> 150:02e0a0aed4ec 215 /* ************************************************************************* */
<> 150:02e0a0aed4ec 216 #if IAR_PRAGMAS
<> 150:02e0a0aed4ec 217 // IAR memory section declaration for the in-system flash programming functions to be loaded in RAM.
<> 150:02e0a0aed4ec 218 #pragma section=".flashprog"
<> 150:02e0a0aed4ec 219 #endif
<> 150:02e0a0aed4ec 220 #if defined ( __GNUC__ )
<> 150:02e0a0aed4ec 221 __attribute__ ((section(".flashprog")))
<> 150:02e0a0aed4ec 222 #endif
<> 150:02e0a0aed4ec 223 int FLC_MassErase(uint8_t erase_code, uint8_t unlock_key)
<> 150:02e0a0aed4ec 224 {
<> 150:02e0a0aed4ec 225 /* Check if the flash controller is busy */
<> 150:02e0a0aed4ec 226 if (FLC_Busy()) {
<> 150:02e0a0aed4ec 227 return E_BUSY;
<> 150:02e0a0aed4ec 228 }
<> 150:02e0a0aed4ec 229
<> 150:02e0a0aed4ec 230 /* Clear stale errors. Interrupt flags can only be written to zero, so this is safe */
<> 150:02e0a0aed4ec 231 MXC_FLC->intr &= ~MXC_F_FLC_INTR_FAILED_IF;
<> 150:02e0a0aed4ec 232
<> 150:02e0a0aed4ec 233 /* Unlock flash */
<> 150:02e0a0aed4ec 234 MXC_FLC->ctrl = (MXC_FLC->ctrl & ~MXC_F_FLC_CTRL_FLSH_UNLOCK) |
<> 150:02e0a0aed4ec 235 ((unlock_key << MXC_F_FLC_CTRL_FLSH_UNLOCK_POS) & MXC_F_FLC_CTRL_FLSH_UNLOCK);
<> 150:02e0a0aed4ec 236
<> 150:02e0a0aed4ec 237 /* Write the Erase Code */
<> 150:02e0a0aed4ec 238 MXC_FLC->ctrl = (MXC_FLC->ctrl & ~MXC_F_FLC_CTRL_ERASE_CODE) |
<> 150:02e0a0aed4ec 239 ((erase_code << MXC_F_FLC_CTRL_ERASE_CODE_POS) & MXC_F_FLC_CTRL_ERASE_CODE);
<> 150:02e0a0aed4ec 240
<> 150:02e0a0aed4ec 241 /* Start the mass erase */
<> 150:02e0a0aed4ec 242 MXC_FLC->ctrl |= MXC_F_FLC_CTRL_MASS_ERASE;
<> 150:02e0a0aed4ec 243
<> 150:02e0a0aed4ec 244 /* Wait until flash operation is complete */
<> 150:02e0a0aed4ec 245 while (FLC_Busy());
<> 150:02e0a0aed4ec 246
<> 150:02e0a0aed4ec 247 /* Lock flash */
<> 150:02e0a0aed4ec 248 MXC_FLC->ctrl &= ~(MXC_F_FLC_CTRL_FLSH_UNLOCK | MXC_F_FLC_CTRL_ERASE_CODE);
<> 150:02e0a0aed4ec 249
<> 150:02e0a0aed4ec 250 /* Check for failures */
<> 150:02e0a0aed4ec 251 if (MXC_FLC->intr & MXC_F_FLC_INTR_FAILED_IF) {
<> 150:02e0a0aed4ec 252 /* Interrupt flags can only be written to zero, so this is safe */
<> 150:02e0a0aed4ec 253 MXC_FLC->intr &= ~MXC_F_FLC_INTR_FAILED_IF;
<> 150:02e0a0aed4ec 254 return E_UNKNOWN;
<> 150:02e0a0aed4ec 255 }
<> 150:02e0a0aed4ec 256
<> 150:02e0a0aed4ec 257 return E_NO_ERROR;
<> 150:02e0a0aed4ec 258 }
<> 150:02e0a0aed4ec 259
<> 150:02e0a0aed4ec 260 /**@} end of group flc */