1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/******************************************************************************
* The MIT License
*
* Copyright (c) 2010 Perry Hung.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*****************************************************************************/
/**
* @brief flash peripheral management functions
*/
#include "libmaple.h"
#include "flash.h"
#include "bitband.h"
/**
* @brief Turn on the hardware prefetcher.
*/
void flash_enable_prefetch(void) {
*bb_perip(&FLASH_BASE->ACR, FLASH_ACR_PRFTBE_BIT) = 1;
}
/**
* @brief Set flash wait states
*
* See ST PM0042, section 3.1 for restrictions on the acceptable value
* of wait_states for a given SYSCLK configuration.
*
* @param wait_states number of wait states (one of
* FLASH_WAIT_STATE_0, FLASH_WAIT_STATE_1,
* FLASH_WAIT_STATE_2).
*/
void flash_set_latency(uint32 wait_states) {
uint32 val = FLASH_BASE->ACR;
val &= ~FLASH_ACR_LATENCY;
val |= wait_states;
FLASH_BASE->ACR = val;
}
|
