bcf3d7fa43517e56d01046c613c5080d31ecdfad
1 /*******************************************************************************
2 *
3 * HAL_FLASH.c
4 * Flash Library for flash memory controller of MSP430F5xx/6xx family
5 *
6 *
7 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
8 *
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 *
17 * Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the
20 * distribution.
21 *
22 * Neither the name of Texas Instruments Incorporated nor the names of
23 * its contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 *
38 * Created: Version 1.0 11/24/2009
39 * Updated: Version 2.0 01/18/2011
40 *
41 ******************************************************************************/
43 #include "msp430.h"
44 #include "HAL_FLASH.h"
46 void Flash_SegmentErase(uint16_t *Flash_ptr)
47 {
48 FCTL3 = FWKEY; // Clear Lock bit
49 FCTL1 = FWKEY + ERASE; // Set Erase bit
50 *Flash_ptr = 0; // Dummy write to erase Flash seg
51 while (FCTL3 & BUSY); // test busy
52 FCTL1 = FWKEY; // Clear WRT bit
53 FCTL3 = FWKEY + LOCK; // Set LOCK bit
54 }
56 uint8_t Flash_EraseCheck(uint16_t *Flash_ptr, uint16_t len)
57 {
58 uint16_t i;
60 for (i = 0; i < len; i++) { // was erasing successfull?
61 if (*(Flash_ptr + i) != 0xFF) {
62 return FLASH_STATUS_ERROR;
63 }
64 }
66 return FLASH_STATUS_OK;
67 }
69 void FlashWrite_8(uint8_t *Data_ptr, uint8_t *Flash_ptr, uint16_t count)
70 {
71 FCTL3 = FWKEY; // Clear Lock bit
72 FCTL1 = FWKEY+WRT; // Enable byte/word write mode
74 while (count > 0) {
75 while (FCTL3 & BUSY); // test busy
76 *Flash_ptr++ = *Data_ptr++; // Write to Flash
77 count--;
78 }
80 FCTL1 = FWKEY; // Clear write bit
81 FCTL3 = FWKEY + LOCK; // Set LOCK bit
82 }
84 void FlashWrite_16(uint16_t *Data_ptr, uint16_t *Flash_ptr, uint16_t count)
85 {
86 FCTL3 = FWKEY; // Clear Lock bit
87 FCTL1 = FWKEY+WRT; // Enable byte/word write mode
89 while (count > 0) {
90 while (FCTL3 & BUSY); // test busy
91 *Flash_ptr++ = *Data_ptr++; // Write to Flash
92 count--;
93 }
95 FCTL1 = FWKEY; // Clear Erase bit
96 FCTL3 = FWKEY + LOCK; // Set LOCK bit
97 }
99 void FlashWrite_32(uint32_t *Data_ptr, uint32_t *Flash_ptr, uint16_t count)
100 {
101 FCTL3 = FWKEY; // Clear Lock bit
102 FCTL1 = FWKEY + BLKWRT; // Enable long-word write
104 while (count > 0) {
105 while (FCTL3 & BUSY); // test busy
106 *Flash_ptr++ = *Data_ptr++; // Write to Flash
107 count--;
108 }
110 FCTL1 = FWKEY; // Clear Erase bit
111 FCTL3 = FWKEY + LOCK; // Set LOCK bit
112 }
114 void FlashMemoryFill_32(uint32_t value, uint32_t *Flash_ptr, uint16_t count)
115 {
116 FCTL3 = FWKEY; // Clear Lock bit
117 FCTL1 = FWKEY + BLKWRT; // Enable long-word write
119 while (count > 0) {
120 while (FCTL3 & BUSY); // test busy
121 *Flash_ptr++ = value; // Write to Flash
122 count--;
123 }
125 FCTL1 = FWKEY; // Clear Erase bit
126 FCTL3 = FWKEY + LOCK; // Set LOCK bit
127 }