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lhye200
2025-10-15 00:22:56 +08:00
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libraries/zf_device/zf_device_ov7725.c Normal file
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/*********************************************************************************************************************
* TC264 Opensourec Library <20><><EFBFBD><EFBFBD>TC264 <20><>Դ<EFBFBD>⣩<EFBFBD><E2A3A9>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>ڹٷ<DAB9> SDK <20>ӿڵĵ<DAB5><C4B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4>
* Copyright (c) 2022 SEEKFREE <20><><EFBFBD>ɿƼ<C9BF>
*
* <20><><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD> TC264 <20><>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>
*
* TC264 <20><>Դ<EFBFBD><D4B4> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* <20><><EFBFBD><EFBFBD><EFBFBD>Ը<EFBFBD><D4B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ᷢ<EFBFBD><E1B7A2><EFBFBD><EFBFBD> GPL<50><4C>GNU General Public License<73><65><EFBFBD><EFBFBD> GNUͨ<55>ù<EFBFBD><C3B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤<EFBFBD><D6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* <20><> GPL <20>ĵ<EFBFBD>3<EFBFBD>棨<EFBFBD><E6A3A8> GPL3.0<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѡ<EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD><EFBFBD>κκ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>İ汾<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>·<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<2F><><EFBFBD>޸<EFBFBD><DEB8><EFBFBD>
*
* <20><><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD>ϣ<EFBFBD><CFA3><EFBFBD><EFBFBD><EFBFBD>ܷ<EFBFBD><DCB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD><C3A3><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κεı<CEB5>֤
* <20><><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD><D4BB>ʺ<EFBFBD><CABA>ض<EFBFBD><D8B6><EFBFBD>;<EFBFBD>ı<EFBFBD>֤
* <20><><EFBFBD><EFBFBD>ϸ<EFBFBD><CFB8><EFBFBD><EFBFBD><EFBFBD>μ<EFBFBD> GPL
*
* <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD>ͬʱ<CDAC>յ<EFBFBD>һ<EFBFBD><D2BB> GPL <20>ĸ<EFBFBD><C4B8><EFBFBD>
* <20><><EFBFBD><EFBFBD>û<EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><https://www.gnu.org/licenses/>
*
* <20><><EFBFBD><EFBFBD>ע<EFBFBD><D7A2><EFBFBD><EFBFBD>
* <20><><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4>ʹ<EFBFBD><CAB9> GPL3.0 <20><>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD>֤Э<D6A4><D0AD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD>İ汾
* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӣ<EFBFBD>İ<EFBFBD><C4B0><EFBFBD> libraries/doc <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>µ<EFBFBD> GPL3_permission_statement.txt <20>ļ<EFBFBD><C4BC><EFBFBD>
* <20><><EFBFBD><EFBFBD>֤<EFBFBD><D6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD> libraries <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>µ<EFBFBD> LICENSE <20>ļ<EFBFBD>
* <20><>ӭ<EFBFBD><D3AD>λʹ<CEBB>ò<EFBFBD><C3B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>޸<EFBFBD><DEB8><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD>뱣<EFBFBD><EBB1A3><EFBFBD><EFBFBD><EFBFBD>ɿƼ<C9BF><C6BC>İ<EFBFBD>Ȩ<EFBFBD><C8A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*
* <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD> zf_device_ov7725
* <20><>˾<EFBFBD><CBBE><EFBFBD><EFBFBD> <20>ɶ<EFBFBD><C9B6><EFBFBD><EFBFBD>ɿƼ<C9BF><C6BC><EFBFBD><EFBFBD>޹<EFBFBD>˾
* <20>汾<EFBFBD><E6B1BE>Ϣ <20>鿴 libraries/doc <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD> version <20>ļ<EFBFBD> <20>汾˵<E6B1BE><CBB5>
* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ADS v1.10.2
* <20><><EFBFBD><EFBFBD>ƽ̨ TC264D
* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> https://seekfree.taobao.com/
*
* <20>޸ļ<DEB8>¼
* <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><>ע
* 2022-09-15 pudding first version
********************************************************************************************************************/
/*********************************************************************************************************************
* <20><><EFBFBD>߶<EFBFBD><DFB6>壺
* ------------------------------------
* ģ<><C4A3><EFBFBD>ܽ<EFBFBD> <20><>Ƭ<EFBFBD><C6AC><EFBFBD>ܽ<EFBFBD>
* TXD/SCL <20>鿴 zf_device_ov7725.h <20><> OV7725_COF_UART_TX <20><> OV7725_COF_IIC_SCL <20>궨<EFBFBD><EAB6A8>
* RXD/SDA <20>鿴 zf_device_ov7725.h <20><> OV7725_COF_UART_RX <20><> OV7725_COF_IIC_SDA <20>궨<EFBFBD><EAB6A8>
* PCLK <20>鿴 zf_device_ov7725.h <20><> OV7725_PCLK_PIN <20>궨<EFBFBD><EAB6A8>
* VSY <20>鿴 zf_device_ov7725.h <20><> OV7725_VSYNC_PIN <20>궨<EFBFBD><EAB6A8>
* D0-D7 <20>鿴 zf_device_ov7725.h <20><> OV7725_DATA_PIN <20>궨<EFBFBD><EAB6A8> <20>Ӹö<D3B8><C3B6>忪ʼ<E5BFAA><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˸<EFBFBD><CBB8><EFBFBD><EFBFBD><EFBFBD>
* VCC 3.3V<EFBFBD><EFBFBD>Դ
* GND <20><>Դ<EFBFBD><D4B4>
* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* ------------------------------------
********************************************************************************************************************/
#include "zf_common_interrupt.h"
#include "zf_common_debug.h"
#include "zf_common_fifo.h"
#include "zf_driver_delay.h"
#include "zf_driver_dma.h"
#include "zf_driver_exti.h"
#include "zf_driver_gpio.h"
#include "zf_driver_soft_iic.h"
#include "zf_driver_uart.h"
#include "zf_device_camera.h"
#include "zf_device_type.h"
#include "zf_device_ov7725.h"
vuint8 ov7725_finish_flag = 0;
uint8 ov7725_image_binary [OV7725_H][OV7725_W / 8]; // ͼ<>񱣴<EFBFBD><F1B1A3B4><EFBFBD><EFBFBD><EFBFBD>
uint8 ov7725_uart_dma_init_flag; // <20><><EFBFBD>³<EFBFBD>ʼ<EFBFBD><CABC>DMA<4D>ı<EFBFBD>־λ
uint8 ov7725_dma_int_num = 0;
uint8 ov7725_lost_flag = 1;
uint8 ov7725_link_list_num = 0;
// <20><>Ҫ<EFBFBD><D2AA><EFBFBD>õ<EFBFBD><C3B5><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸IJ<DEB8><C4B2><EFBFBD>
static uint16 ov7725_set_confing_buffer [OV7725_CONFIG_FINISH][2]=
{
{OV7725_INIT, 0}, // <20><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{OV7725_RESERVE, 0}, // <20><><EFBFBD><EFBFBD>
{OV7725_CONTRAST, OV7725_CONTRAST_DEF}, // <20><>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>
{OV7725_FPS, OV7725_FPS_DEF}, // ֡<><D6A1>
{OV7725_COL, OV7725_W}, // ͼ<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{OV7725_ROW, OV7725_H} // ͼ<><CDBC><EFBFBD>߶<EFBFBD>
};
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸IJ<DEB8><C4B2><EFBFBD>
static uint16 ov7725_get_confing_buffer [OV7725_CONFIG_FINISH - 1][2]=
{
{OV7725_RESERVE, 0}, // <20><><EFBFBD><EFBFBD>
{OV7725_CONTRAST, 0}, // <20><>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>
{OV7725_FPS, 0}, // ֡<><D6A1>
{OV7725_COL, 0}, // ͼ<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{OV7725_ROW, 0} // ͼ<><CDBC><EFBFBD>߶<EFBFBD>
};
//-------------------------------------------------------------------------------------------------------------------
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ
// <20><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5> buff <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD>ĵ<EFBFBD>ַ
// <20><><EFBFBD>ز<EFBFBD><D8B2><EFBFBD> uint8 1-ʧ<><CAA7> 0-<2D>ɹ<EFBFBD>
// ʹ<><CAB9>ʾ<EFBFBD><CABE> if(ov7725_set_config(ov7725_set_confing_buffer)){}
// <20><>ע<EFBFBD><D7A2>Ϣ <20>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD><EFBFBD>
//-------------------------------------------------------------------------------------------------------------------
static uint8 ov7725_set_config (uint16 buff[OV7725_CONFIG_FINISH][2])
{
uint8 return_state = 1;
uint8 uart_buffer[4];
uint16 temp = 0;
uint16 timeout_count = 0;
uint32 loop_count = 0;
uint32 uart_buffer_index = 0;
for(loop_count = OV7725_ROW; OV7725_SET_DATA > loop_count; loop_count --)
{
uart_buffer[0] = 0xA5;
uart_buffer[1] = (uint8)buff[loop_count][0];
temp = buff[loop_count][1];
uart_buffer[2] = temp >> 8;
uart_buffer[3] = (uint8)temp;
uart_write_buffer(OV7725_COF_UART, uart_buffer, 4);
system_delay_ms(10);
}
do
{
if(3 <= fifo_used(&camera_receiver_fifo))
{
uart_buffer_index = 3;
fifo_read_buffer(&camera_receiver_fifo, uart_buffer, &uart_buffer_index, FIFO_READ_AND_CLEAN);
if((0xff == uart_buffer[1]) || (0xff == uart_buffer[2]))
{
return_state = 0;
break;
}
}
system_delay_ms(1);
}while(OV7725_INIT_TIMEOUT > timeout_count ++);
// <20><><EFBFBD>ϲ<EFBFBD><CFB2>ֶ<EFBFBD><D6B6><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD>õ<EFBFBD><C3B5><EFBFBD><EFBFBD><EFBFBD>ȫ<EFBFBD><C8AB><EFBFBD><EFBFBD><EFBFBD>ᱣ<EFBFBD><E1B1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7>51<35><31>Ƭ<EFBFBD><C6AC><EFBFBD><EFBFBD>eeprom<6F><6D>
// <20><><EFBFBD><EFBFBD>set_exposure_time<6D><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><C3B5>ع<EFBFBD><D8B9><EFBFBD><EFBFBD>ݲ<EFBFBD><DDB2>洢<EFBFBD><E6B4A2>eeprom<6F><6D>
return return_state;
}
//-------------------------------------------------------------------------------------------------------------------
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>ͷ<EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ
// <20><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5> buff <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD>ĵ<EFBFBD>ַ
// <20><><EFBFBD>ز<EFBFBD><D8B2><EFBFBD> uint8 1-ʧ<><CAA7> 0-<2D>ɹ<EFBFBD>
// ʹ<><CAB9>ʾ<EFBFBD><CABE> if(ov7725_get_config(ov7725_get_confing_buffer)){}
// <20><>ע<EFBFBD><D7A2>Ϣ <20>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD><EFBFBD>
//-------------------------------------------------------------------------------------------------------------------
static uint8 ov7725_get_config (uint16 buff[OV7725_CONFIG_FINISH - 1][2])
{
uint8 return_state = 0;
uint8 uart_buffer[4];
uint16 temp = 0;
uint16 timeout_count = 0;
uint32 loop_count = 0;
uint32 uart_buffer_index = 0;
for(loop_count = OV7725_ROW - 1; 1 <= loop_count; loop_count --)
{
uart_buffer[0] = 0xA5;
uart_buffer[1] = OV7725_GET_STATUS;
temp = buff[loop_count][0];
uart_buffer[2] = temp >> 8;
uart_buffer[3] = (uint8)temp;
uart_write_buffer(OV7725_COF_UART, uart_buffer, 4);
system_delay_ms(10);
timeout_count = 0;
do
{
if(3 <= fifo_used(&camera_receiver_fifo))
{
uart_buffer_index = 3;
fifo_read_buffer(&camera_receiver_fifo, uart_buffer, &uart_buffer_index, FIFO_READ_AND_CLEAN);
buff[loop_count][1] = uart_buffer[1] << 8 | uart_buffer[2];
break;
}
system_delay_ms(1);
}while(OV7725_INIT_TIMEOUT > timeout_count ++);
if(OV7725_INIT_TIMEOUT < timeout_count) // <20><>ʱ
{
return_state = 1;
break;
}
}
return return_state;
}
//-------------------------------------------------------------------------------------------------------------------
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> С<><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ڲ<EFBFBD><DAB2>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>
// <20><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5> void
// <20><><EFBFBD>ز<EFBFBD><D8B2><EFBFBD> uint8 1-ʧ<><CAA7> 0-<2D>ɹ<EFBFBD>
// ʹ<><CAB9>ʾ<EFBFBD><CABE> if(ov7725_iic_init()){}
// <20><>ע<EFBFBD><D7A2>Ϣ <20>ڲ<EFBFBD>ʹ<EFBFBD><CAB9> <20>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//-------------------------------------------------------------------------------------------------------------------
static uint8 ov7725_iic_init (void)
{
soft_iic_info_struct ov7725_iic_struct;
uint8 ov7725_idcode = 0;
uint8 return_state = 0;
uart_rx_interrupt(OV7725_COF_UART, 0);
soft_iic_init(&ov7725_iic_struct, OV7725_DEV_ADD, OV7725_COF_IIC_DELAY, OV7725_COF_IIC_SCL, OV7725_COF_IIC_SDA);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_COM7, 0x80); // <20><>λ<EFBFBD><CEBB><EFBFBD><EFBFBD>ͷ
system_delay_ms(50);
do
{
ov7725_idcode = soft_iic_sccb_read_register(&ov7725_iic_struct, OV7725_VER);
if(OV7725_ID != ov7725_idcode)
{
return_state = 1; // У<><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷID<49><44>
break;
}
// ID<49><44>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Ȼ<><C8BB><EFBFBD><EFBFBD><EFBFBD>üĴ<C3BC><C4B4><EFBFBD>
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_COM4 , 0xC1);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_CLKRC , 0x01);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_COM2 , 0x03);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_COM3 , 0xD0);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_COM7 , 0x40);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_COM8 , 0xCE); // 0xCE:<3A>ر<EFBFBD><D8B1>Զ<EFBFBD><D4B6>ع<EFBFBD> 0xCF<43><46><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><D4B6>ع<EFBFBD>
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_HSTART , 0x3F);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_HSIZE , 0x50);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_VSTRT , 0x03);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_VSIZE , 0x78);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_HREF , 0x00);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_SCAL0 , 0x0A);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_AWB_Ctrl0 , 0xE0);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_DSPAuto , 0xff);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_DSP_Ctrl2 , 0x0C);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_DSP_Ctrl3 , 0x00);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_DSP_Ctrl4 , 0x00);
if(OV7725_W == 80)
{
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_HOutSize, 0x14);
}
else if(OV7725_W == 160)
{
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_HOutSize, 0x28);
}
else if(OV7725_W == 240)
{
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_HOutSize, 0x3c);
}
else if(OV7725_W == 320)
{
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_HOutSize, 0x50);
}
if(OV7725_H == 60)
{
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_VOutSize, 0x1E);
}
else if(OV7725_H == 120)
{
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_VOutSize, 0x3c);
}
else if(OV7725_H == 180)
{
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_VOutSize, 0x5a);
}
else if(OV7725_H == 240)
{
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_VOutSize, 0x78);
}
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_REG28 , 0x01);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_EXHCH , 0x10);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_EXHCL , 0x1F);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM1 , 0x0c);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM2 , 0x16);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM3 , 0x2a);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM4 , 0x4e);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM5 , 0x61);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM6 , 0x6f);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM7 , 0x7b);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM8 , 0x86);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM9 , 0x8e);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM10 , 0x97);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM11 , 0xa4);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM12 , 0xaf);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM13 , 0xc5);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM14 , 0xd7);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_GAM15 , 0xe8);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_SLOP , 0x20);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_LC_RADI , 0x00);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_LC_COEF , 0x13);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_LC_XC , 0x08);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_LC_COEFB , 0x14);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_LC_COEFR , 0x17);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_LC_CTR , 0x05);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_BDBase , 0x99);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_BDMStep , 0x03);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_SDE , 0x04);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_BRIGHT , 0x00);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_CNST , 0x40);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_SIGN , 0x06);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_UVADJ0 , 0x11);
soft_iic_sccb_write_register(&ov7725_iic_struct, OV7725_UVADJ1 , 0x02);
}while(0);
return return_state;
}
//-------------------------------------------------------------------------------------------------------------------
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> С<><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD><EFBFBD>ͨ<EFBFBD>Żص<C5BB>
// <20><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5> void
// <20><><EFBFBD>ز<EFBFBD><D8B2><EFBFBD> void
// ʹ<><CAB9>ʾ<EFBFBD><CABE> ov7725_uart_callback();
//-------------------------------------------------------------------------------------------------------------------
static void ov7725_uart_handler (void)
{
uint8 data = 0;
uart_query_byte(OV7725_COF_UART, &data);
if(0xA5 == data)
{
fifo_clear(&camera_receiver_fifo);
}
fifo_write_element(&camera_receiver_fifo, data);
}
//-------------------------------------------------------------------------------------------------------------------
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> С<><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD>ж<EFBFBD>
// <20><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5> void
// <20><><EFBFBD>ز<EFBFBD><D8B2><EFBFBD> void
// ʹ<><CAB9>ʾ<EFBFBD><CABE> ov7725_vsync_handler();
//-------------------------------------------------------------------------------------------------------------------
static void ov7725_vsync_handler(void)
{
exti_flag_clear(OV7725_VSYNC_PIN);
ov7725_dma_int_num = 0;
if((ov7725_uart_dma_init_flag || ov7725_lost_flag) && camera_type == CAMERA_BIN_UART)
{
ov7725_uart_dma_init_flag = 0;
IfxDma_resetChannel(&MODULE_DMA, OV7725_DMA_CH);
ov7725_link_list_num = dma_init(OV7725_DMA_CH,
OV7725_DATA_ADD,
ov7725_image_binary[0],
OV7725_PCLK_PIN,
EXTI_TRIGGER_RISING,
OV7725_IMAGE_SIZE);
dma_enable(OV7725_DMA_CH);
}
else
{
if(ov7725_link_list_num == 1)
{
dma_set_destination(OV7725_DMA_CH, ov7725_image_binary[0]);
}
dma_enable(OV7725_DMA_CH);
}
ov7725_lost_flag = 1;
}
//-------------------------------------------------------------------------------------------------------------------
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> С<><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷDMA<4D><41><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>
// <20><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5> void
// <20><><EFBFBD>ز<EFBFBD><D8B2><EFBFBD> void
// ʹ<><CAB9>ʾ<EFBFBD><CABE> ov7725_dma_handler();
//-------------------------------------------------------------------------------------------------------------------
static void ov7725_dma_handler(void)
{
clear_dma_flag(OV7725_DMA_CH);
if(IfxDma_getChannelTransactionRequestLost(&MODULE_DMA, OV7725_DMA_CH))
{//ͼ<><CDBC><EFBFBD>д<EFBFBD>λ
ov7725_finish_flag = 0;
dma_disable(OV7725_DMA_CH);
IfxDma_clearChannelTransactionRequestLost(&MODULE_DMA, OV7725_DMA_CH);
ov7725_uart_dma_init_flag = 1;
}
else
{
ov7725_dma_int_num++;
if(ov7725_dma_int_num >= ov7725_link_list_num)
{
ov7725_dma_int_num = 0;
ov7725_lost_flag = 0;
ov7725_finish_flag = 1;
dma_disable(OV7725_DMA_CH);
}
}
}
//-------------------------------------------------------------------------------------------------------------------
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>ͷ<EFBFBD>̼<EFBFBD> ID
// <20><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5> void
// <20><><EFBFBD>ز<EFBFBD><D8B2><EFBFBD> void
// ʹ<><CAB9>ʾ<EFBFBD><CABE> ov7725_uart_get_id(); // <20><><EFBFBD>øú<C3B8><C3BA><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD>ȳ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><>ע<EFBFBD><D7A2>Ϣ
//-------------------------------------------------------------------------------------------------------------------
uint16 ov7725_uart_get_id (void)
{
uint16 temp = 0;
uint8 uart_buffer[4];
uint16 timeout_count = 0;
uint16 return_value = 0;
uint32 uart_buffer_index = 0;
uart_buffer[0] = 0xA5;
uart_buffer[1] = OV7725_GET_WHO_AM_I;
temp = 0;
uart_buffer[2] = temp >> 8;
uart_buffer[3] = (uint8)temp;
uart_write_buffer(OV7725_COF_UART, uart_buffer, 4);
temp = 0;
do
{
if(3 <= fifo_used(&camera_receiver_fifo))
{
uart_buffer_index = 3;
fifo_read_buffer(&camera_receiver_fifo, uart_buffer, &uart_buffer_index, FIFO_READ_AND_CLEAN);
return_value = uart_buffer[1] << 8 | uart_buffer[2];
break;
}
system_delay_ms(1);
}while(OV7725_INIT_TIMEOUT > timeout_count ++);
return return_value;
}
//-------------------------------------------------------------------------------------------------------------------
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>ͷ<EFBFBD>̼<EFBFBD><CCBC>汾
// <20><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5> void
// <20><><EFBFBD>ز<EFBFBD><D8B2><EFBFBD> void
// ʹ<><CAB9>ʾ<EFBFBD><CABE> ov7725_get_version(); // <20><><EFBFBD>øú<C3B8><C3BA><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD>ȳ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><>ע<EFBFBD><D7A2>Ϣ
//-------------------------------------------------------------------------------------------------------------------
uint16 ov7725_get_version (void)
{
uint16 temp = 0;
uint8 uart_buffer[4];
uint16 timeout_count = 0;
uint16 return_value = 0;
uint32 uart_buffer_index = 0;
uart_buffer[0] = 0xA5;
uart_buffer[1] = OV7725_GET_STATUS;
temp = OV7725_GET_VERSION;
uart_buffer[2] = temp >> 8;
uart_buffer[3] = (uint8)temp;
uart_write_buffer(OV7725_COF_UART, uart_buffer, 4);
do
{
if(3 <= fifo_used(&camera_receiver_fifo))
{
uart_buffer_index = 3;
fifo_read_buffer(&camera_receiver_fifo, uart_buffer, &uart_buffer_index, FIFO_READ_AND_CLEAN);
return_value = uart_buffer[1] << 8 | uart_buffer[2];
break;
}
system_delay_ms(1);
}while(OV7725_INIT_TIMEOUT > timeout_count ++);
return return_value;
}
//-------------------------------------------------------------------------------------------------------------------
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OV7725 <20><><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7>ʼ<EFBFBD><CABC>
// <20><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5> NULL
// <20><><EFBFBD>ز<EFBFBD><D8B2><EFBFBD> void
// ʹ<><CAB9>ʾ<EFBFBD><CABE> ov7725_init();
// <20><>ע<EFBFBD><D7A2>Ϣ
//-------------------------------------------------------------------------------------------------------------------
uint8 ov7725_init (void)
{
uint16 out_time = 0;
uint8 return_state = 0;
gpio_init(OV7725_VSYNC_PORT_PIN, GPI, GPIO_LOW, GPI_FLOATING_IN);
do
{
while(0 == gpio_get_level(OV7725_VSYNC_PORT_PIN))
{
system_delay_ms(1);
out_time ++;
if(OV7725_INIT_TIMEOUT < out_time)
{
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˶<EFBFBD><CBB6><EFBFBD><EFBFBD><EFBFBD>Ϣ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20>Ǵ<EFBFBD><C7B4><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ
// <20><><EFBFBD><EFBFBD>һ<EFBFBD>½<EFBFBD><C2BD>ߺ͹<DFBA><CDB9><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܾ<EFBFBD><DCBE>ǻ<EFBFBD><C7BB><EFBFBD>
zf_log(0, "OV7725 check error.");
return_state = 1;
break;
}
}
set_camera_type(CAMERA_BIN_UART, ov7725_vsync_handler, ov7725_dma_handler, ov7725_uart_handler);
camera_fifo_init();
uart_init(OV7725_COF_UART, OV7725_COF_BAUR, OV7725_COF_UART_RX, OV7725_COF_UART_TX);
uart_rx_interrupt(OV7725_COF_UART, 1);
system_delay_ms(200);
// <20><>ȡ<EFBFBD><C8A1><EFBFBD>в<EFBFBD><D0B2><EFBFBD>
if(ov7725_get_config(ov7725_get_confing_buffer))
{
uart_rx_interrupt(OV7725_COF_UART, 0);
system_delay_ms(200);
set_camera_type(CAMERA_BIN_IIC, ov7725_vsync_handler, ov7725_dma_handler, NULL); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD><EFBFBD>
if(ov7725_iic_init())
{
zf_log(0, "OV7725 IIC error.");
set_camera_type(NO_CAMERE, NULL, NULL, NULL);
return_state = 1;
zf_log(0, "ov7725 set config error.");
break;
}
}
else
{
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>в<EFBFBD><D0B2><EFBFBD>
if(ov7725_set_config(ov7725_set_confing_buffer))
{
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˶<EFBFBD><CBB6><EFBFBD><EFBFBD><EFBFBD>Ϣ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><>ô<EFBFBD><C3B4><EFBFBD>Ǵ<EFBFBD><C7B4><EFBFBD>ͨ<EFBFBD>ų<EFBFBD><C5B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>˳<EFBFBD><CBB3><EFBFBD>
// <20><><EFBFBD><EFBFBD>һ<EFBFBD>½<EFBFBD><C2BD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܾ<EFBFBD><DCBE>ǻ<EFBFBD><C7BB><EFBFBD>
zf_log(0, "OV7725 set confing error.");
uart_rx_interrupt(OV7725_COF_UART, 0);
set_camera_type(NO_CAMERE, NULL, NULL, NULL);
return_state = 1;
break;
}
// <20><>ȡ<EFBFBD><C8A1><EFBFBD>в<EFBFBD><D0B2><EFBFBD>
if(ov7725_get_config(ov7725_get_confing_buffer))
{
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˶<EFBFBD><CBB6><EFBFBD><EFBFBD><EFBFBD>Ϣ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><>ô<EFBFBD><C3B4><EFBFBD>Ǵ<EFBFBD><C7B4><EFBFBD>ͨ<EFBFBD>ų<EFBFBD><C5B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>˳<EFBFBD><CBB3><EFBFBD>
// <20><><EFBFBD><EFBFBD>һ<EFBFBD>½<EFBFBD><C2BD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܾ<EFBFBD><DCBE>ǻ<EFBFBD><C7BB><EFBFBD>
zf_log(0, "OV7725 get confing error.");
uart_rx_interrupt(OV7725_COF_UART, 0);
set_camera_type(NO_CAMERE, NULL, NULL, NULL);
return_state = 1;
break;
}
}
ov7725_link_list_num = camera_init(OV7725_DATA_ADD, ov7725_image_binary[0], OV7725_IMAGE_SIZE);
}while(0);
return return_state;
}