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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
* Copyright (c) 2022 OpenLuat & AirM2M
*
* 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.
*/
#include "user.h"
#define DCMI_BUF_SIZE (1280)
#define DCMI_RXBUF_BAND (2)
typedef struct
{
PV_Union uBuf[DCMI_RXBUF_BAND];
CBFuncEx_t CB;
void *pUserData;
uint32_t BufLen;
uint8_t RxDMASn;
}DCMI_CtrlStruct;
static DCMI_CtrlStruct prvDCMI;
static int32_t prvDCMI_DMADone(void *pData, void *pParam);
static int32_t prvDCMI_DummyCB(void *pData, void *pParam)
{
return -1;
}
static void prvDCMI_IrqHandler(int32_t Line, void *pData)
{
uint32_t SR = DCMI->RISR;
DCMI->ICR = 0xff;
if (SR & DCMI_IER_VSYNC_IE)
{
prvDCMI.RxDMASn = (prvDCMI.RxDMASn + 1)%DCMI_RXBUF_BAND;
DMA_ClearStreamFlag(DCMI_RX_DMA_STREAM);
DMA_ForceStartStream(DCMI_RX_DMA_STREAM, prvDCMI.uBuf[prvDCMI.RxDMASn].pu32, prvDCMI.BufLen, prvDCMI_DMADone, NULL, 1);
prvDCMI.CB(NULL, prvDCMI.pUserData);
}
}
static int32_t prvDCMI_DMADone(void *pData, void *pParam)
{
uint8_t LastRxDMASn;
Buffer_Struct RxBuf;
LastRxDMASn = prvDCMI.RxDMASn;
prvDCMI.RxDMASn = (prvDCMI.RxDMASn + 1)%DCMI_RXBUF_BAND;
DMA_ClearStreamFlag(DCMI_RX_DMA_STREAM);
DMA_ForceStartStream(DCMI_RX_DMA_STREAM, prvDCMI.uBuf[prvDCMI.RxDMASn].pu32, prvDCMI.BufLen, prvDCMI_DMADone, NULL, 1);
Buffer_StaticInit(&RxBuf, prvDCMI.uBuf[LastRxDMASn].pu32, prvDCMI.BufLen);
prvDCMI.CB(&RxBuf, prvDCMI.pUserData);
return 0;
}
void DCMI_Setup(uint8_t VsyncLevel, uint8_t HsyncLevel, uint8_t PclkPOL, uint8_t DataBit, uint32_t FrameRate)
{
uint32_t Ctrl = (1 << 29);
Ctrl |= VsyncLevel?DCMI_CR_VSPOL:0;
Ctrl |= HsyncLevel?DCMI_CR_HSPOL:0;
Ctrl |= PclkPOL?DCMI_CR_PCKPOL:0;
Ctrl |= ((DataBit - 8) >> 1) << 10;
Ctrl |= (FrameRate & 0x03 ) << 8;
SYSCTRL->DBG_CR |= DCMI_FROM_OUT;
DCMI->CR = Ctrl | (1 << 21);
DCMI->IER = DCMI_IER_VSYNC_IE|DCMI_IER_OVF_IE|DCMI_IER_ERR_IE;
DCMI->ICR = 0xff;
ISR_OnOff(DCMI_IRQn, 0);
ISR_SetHandler(DCMI_IRQn, prvDCMI_IrqHandler, NULL);
#ifdef __BUILD_OS__
ISR_SetPriority(DCMI_IRQn, configLIBRARY_LOWEST_INTERRUPT_PRIORITY - 2);
#else
ISR_SetPriority(DCMI_IRQn, 5);
#endif
DMA_InitTypeDef DMA_InitStruct;
DMA_BaseConfig(&DMA_InitStruct);
DMA_InitStruct.DMA_Peripheral = SYSCTRL_PHER_CTRL_DMA_CHx_IF_DCMI_TX;
DMA_InitStruct.DMA_PeripheralBaseAddr = (uint32_t)&DCMI->DR;
DMA_InitStruct.DMA_MemoryDataSize = DMA_DataSize_Word;
DMA_InitStruct.DMA_PeripheralDataSize = DMA_DataSize_Word;
DMA_InitStruct.DMA_Priority = DMA_Priority_1;
DMA_ConfigStream(DCMI_RX_DMA_STREAM, &DMA_InitStruct);
if (!prvDCMI.CB)
{
prvDCMI.CB = prvDCMI_DummyCB;
}
}
void DCMI_SetCallback(CBFuncEx_t CB, void *pData)
{
if (CB)
{
prvDCMI.CB = CB;
}
else
{
prvDCMI.CB = prvDCMI_DummyCB;
}
prvDCMI.pUserData = pData;
}
void DCMI_SetCROPConfig(uint8_t OnOff, uint32_t VStart, uint32_t HStart, uint32_t VLen, uint32_t HLen)
{
if (OnOff)
{
/* Sets the CROP window coordinates */
DCMI->CWSTRTR = (VStart << 16)|HStart;
/* Sets the CROP window size */
DCMI->CWSIZER = (VLen << 16)|HLen;
DCMI->CR |= DCMI_CR_CROP;
}
else
{
DCMI->CR &= ~DCMI_CR_CROP;
}
}
/**
* @brief 摄像头捕获开关
*
* @param OnOff 0： 关 1： 开
*/
void DCMI_CaptureSwitch(uint8_t OnOff, uint32_t BufLen, uint32_t ImageW, uint32_t ImageH, uint8_t DataByte, uint32_t *OutH)
{
uint32_t i;
uint32_t WDataLen, HLen;
if (OnOff)
{
if (DCMI->CR & DCMI_CR_CAPTURE) return;
if (!BufLen)
{
WDataLen = (ImageW * DataByte) >> 2;
if (ImageH > 100)
{
if (!(ImageH % 10))
{
HLen = ImageH / 10;
}
else
{
HLen = ImageH >> 1;
}
}
else
{
HLen = ImageH >> 1;
}
while( (WDataLen * HLen) > 2048)
{
HLen >>= 1;
}
BufLen = WDataLen * HLen;
DBG("buf %u, H %u", BufLen, HLen);
*OutH = HLen;
}
for(i = 0; i < DCMI_RXBUF_BAND; i++)
{
prvDCMI.uBuf[i].pu32 = OS_Malloc(BufLen * sizeof(uint32_t));
}
prvDCMI.RxDMASn = 0;
prvDCMI.BufLen = BufLen;
DMA_ClearStreamFlag(DCMI_RX_DMA_STREAM);
DMA_ForceStartStream(DCMI_RX_DMA_STREAM, prvDCMI.uBuf[0].pu32, prvDCMI.BufLen, prvDCMI_DMADone, NULL, 1);
DCMI->ICR = 0x1f;
ISR_OnOff(DCMI_IRQn, 1);
DCMI->CR |= DCMI_CR_CAPTURE|DCMI_CR_ENABLE;
}
else
{
DMA_StopStream(DCMI_RX_DMA_STREAM);
DCMI->CR &= ~(DCMI_CR_CAPTURE|DCMI_CR_ENABLE|DCMI_CR_CM);
DCMI->CR |= (1 << 21);
ISR_OnOff(DCMI_IRQn, 0);
DCMI->ICR = 0x1f;
ISR_Clear(DCMI_IRQn);
for(i = 0; i < DCMI_RXBUF_BAND; i++)
{
if (prvDCMI.uBuf[i].pu32)
{
OS_Free(prvDCMI.uBuf[i].pu32);
prvDCMI.uBuf[i].pu32 = 0;
}
}
}
}
|
