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
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/**************************************************************************/
/*!
@file flash_nrf5x.c
@author hathach (tinyusb.org)
@section LICENSE
Software License Agreement (BSD License)
Copyright (c) 2018, Adafruit Industries (adafruit.com)
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 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 the copyright holders nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''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 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_nrf5x.h"
#include "flash_cache.h"
#include "nrf_sdm.h"
#include "nrf_soc.h"
#include "rtos.h"
//--------------------------------------------------------------------+
// MACRO TYPEDEF CONSTANT ENUM DECLARATION
//--------------------------------------------------------------------+
static SemaphoreHandle_t _sem = NULL;
void flash_nrf5x_event_cb (uint32_t event)
{
// if (event != NRF_EVT_FLASH_OPERATION_SUCCESS) LOG_LV1("IFLASH", "Flash op Failed");
if ( _sem ) xSemaphoreGive(_sem);
}
// Flash Abstraction Layer
static bool fal_erase (uint32_t addr);
static uint32_t fal_program (uint32_t dst, void const * src, uint32_t len);
static uint32_t fal_read (void* dst, uint32_t src, uint32_t len);
static bool fal_verify (uint32_t addr, void const * buf, uint32_t len);
static uint8_t _cache_buffer[FLASH_CACHE_SIZE] __attribute__((aligned(4)));
static flash_cache_t _cache = {
.erase = fal_erase,
.program = fal_program,
.read = fal_read,
.verify = fal_verify,
.cache_addr = FLASH_CACHE_INVALID_ADDR,
.cache_buf = _cache_buffer
};
//--------------------------------------------------------------------+
// Application API
//--------------------------------------------------------------------+
void flash_nrf5x_flush (void)
{
flash_cache_flush(&_cache);
}
uint32_t flash_nrf5x_write (uint32_t dst, void const * src, uint32_t len)
{
// TODO prevent write SD + bootloader region
return flash_cache_write(&_cache, dst, src, len);
}
uint32_t flash_nrf5x_read (void* dst, uint32_t src, uint32_t len)
{
// return cache value if available
flash_cache_read(&_cache, dst, src, len);
return len;
}
bool flash_nrf5x_erase(uint32_t addr)
{
return fal_erase(addr);
}
//--------------------------------------------------------------------+
// HAL for caching
//--------------------------------------------------------------------+
bool fal_erase (uint32_t addr)
{
// Init semaphore for first call
if ( _sem == NULL )
{
_sem = xSemaphoreCreateCounting(10, 0);
VERIFY(_sem);
}
// retry if busy
uint32_t err;
while ( NRF_ERROR_BUSY == (err = sd_flash_page_erase(addr / FLASH_NRF52_PAGE_SIZE)) )
{
delay(1);
}
VERIFY_STATUS(err, false);
// wait for async event if SD is enabled
uint8_t sd_en = 0;
(void) sd_softdevice_is_enabled(&sd_en);
if ( sd_en ) xSemaphoreTake(_sem, portMAX_DELAY);
return true;
}
static uint32_t fal_program (uint32_t dst, void const * src, uint32_t len)
{
// wait for async event if SD is enabled
uint8_t sd_en = 0;
(void) sd_softdevice_is_enabled(&sd_en);
uint32_t err;
// Somehow S140 v6.1.1 assert an error when writing a whole page
// https://devzone.nordicsemi.com/f/nordic-q-a/40088/sd_flash_write-cause-nrf_fault_id_sd_assert
// Workaround: write half page at a time.
#if NRF52832_XXAA
while ( NRF_ERROR_BUSY == (err = sd_flash_write((uint32_t*) dst, (uint32_t const *) src, len/4)) )
{
delay(1);
}
VERIFY_STATUS(err, 0);
if ( sd_en ) xSemaphoreTake(_sem, portMAX_DELAY);
#else
while ( NRF_ERROR_BUSY == (err = sd_flash_write((uint32_t*) dst, (uint32_t const *) src, len/8)) )
{
delay(1);
}
VERIFY_STATUS(err, 0);
if ( sd_en ) xSemaphoreTake(_sem, portMAX_DELAY);
while ( NRF_ERROR_BUSY == (err = sd_flash_write((uint32_t*) (dst+ len/2), (uint32_t const *) (src + len/2), len/8)) )
{
delay(1);
}
VERIFY_STATUS(err, 0);
if ( sd_en ) xSemaphoreTake(_sem, portMAX_DELAY);
#endif
return len;
}
static uint32_t fal_read (void* dst, uint32_t src, uint32_t len)
{
memcpy(dst, (void*) src, len);
return len;
}
static bool fal_verify (uint32_t addr, void const * buf, uint32_t len)
{
return 0 == memcmp((void*) addr, buf, len);
}
|
