This is a mbed Client sample where ZXing is incorporated, and works on GR-PEACH and GR-LYCHEE.
Dependencies: DisplayApp AsciiFont
Overview
This sample program shows how to use mbed Client together with ZXing which is an open-source, multi-format 1D/2D barcode image processing library. For more info on ZXing, please refer to https://github.com/zxing/zxing.
Required hardware
- GR-PEACH ( https://developer.mbed.org/platforms/Renesas-GR-PEACH/ )
- Audio Camera Shield ( https://developer.mbed.org/teams/Renesas/wiki/Audio_Camera-shield )
- LCD Shield ( https://developer.mbed.org/teams/Renesas/wiki/LCD-shield )
- Ethernet cable and connection to the internet
- Wireless Camera shieled (This is GR-PEACH' Wifi(ESP32) optional.)
- GR-LYCHEE ( https://developer.mbed.org/platforms/Renesas-GR-LYCHEE/ )
Application setup
- Select the connection type. For details, please refer to the following wiki:
https://os.mbed.com/teams/Renesas/code/GR-PEACH_mbed-os-client-ZXingSample/wiki/Connection-type. - Set the client credentials. For details, please refer to the following wiki:
https://os.mbed.com/teams/Renesas/code/GR-PEACH_mbed-os-client-ZXingSample/wiki/Client-credentials. - Change Ethernet settings. For details, please refer to the following wiki:
https://developer.mbed.org/teams/Renesas/code/GR-PEACH_mbed-os-client-ZXingSample/wiki/Ethernet-settings. - Change Wifi settings. For details, please refer to the following wiki:
https://os.mbed.com/teams/Renesas/code/GR-PEACH_mbed-os-client-ZXingSample/wiki/Wifi-settings. - Set up an IP address. (This step is optional.) For details, please refer to the following wiki:
https://os.mbed.com/teams/Renesas/code/GR-PEACH_mbed-os-client-ZXingSample/wiki/IP-address-setup.
Building the example
To build this example:
- Import this example onto mbed Compiler.
- Configure the example in accordance with Application setup.
- Compile the example on mbed Compiler and download the resultant binary file.
- Plug the Ethernet cable into GR-PEACH or GR-LYCHEE if you are using Ethernet mode.
- Plug the micro-USB cable into the OpenSDA port which lies on the next to the RESET button.
- Copy the binary previously downloaded to your PC to GR-PEACH or GR-LYCHEE to flash this example. When the copy is successfully completed, the board is ready to work.
- Press the RESET button on the board to run the example.
- For verification, please refer to the following wiki:
https://developer.mbed.org/teams/Renesas/code/GR-PEACH_mbed-os-client-ZXingSample/wiki/Monitoring-the-application.
Application resources
This example exposes four resources listed below:
- 3202/0/5700. Decode result of barcode data input from camera (GET).
- 3201/0/5850. Blink function, blinks LED when executed (POST).
- 3201/0/5853. Blink pattern, used by the blink function to determine how to blink. In the format of 1000:500:1000:500:1000:500 (PUT).
- 3201/0/5855. Blink color, used by the blink function. Any of red, green, blue, cyan, yellow and magenta is acceptable if you are using GR-PEACH board (PUT).
- 3201/0/5855. Blink color, used by the blink function. Any of green, yellow, orange and red is acceptable if you are using GR-LYCHEE board (PUT).
For more info on how to get notifications when resource 1 changes, or how to use resource 2, 3 and 4, please look at
Import programGR-PEACH_mbed-connector-ZXingSample-node
Node.js based Web Application for mbed Device Connector specific to GR-PEACH_mbed-os-client-ZXingSample
zxing_main.cpp
- Committer:
- <>
- Date:
- 2016-10-06
- Revision:
- 0:eb73febb2bba
- Child:
- 2:6ec5c1c1d41c
File content as of revision 0:eb73febb2bba:
#include <vector> #include "mbed.h" #include "rtos.h" #include "DisplayBace.h" #include "ImageReaderSource.h" #include "DisplayApp.h" #include "AsciiFont.h" #define VIDEO_CVBS (0) /* Analog Video Signal */ #define VIDEO_CMOS_CAMERA (1) /* Digital Video Signal */ #define VIDEO_RGB888 (1) /**** User Selection *********/ /** Camera setting **/ #define VIDEO_INPUT_METHOD (VIDEO_CMOS_CAMERA) /* Select VIDEO_CVBS or VIDEO_CMOS_CAMERA */ #define VIDEO_INPUT_FORMAT (VIDEO_RGB888) /* Select VIDEO_RGB888 */ #define USE_VIDEO_CH (0) /* Select 0 or 1 If selecting VIDEO_CMOS_CAMERA, should be 0.) */ #define VIDEO_PAL (0) /* Select 0(NTSC) or 1(PAL) If selecting VIDEO_CVBS, this parameter is not referenced.) */ /** LCD setting **/ #define LCD_ONOFF (1) /* Select 0(without LCD) or 1(with LCD) */ #if LCD_ONOFF #define LCD_TYPE (0) /* Select 0(4.3inch) or 1(7.1inch) */ #endif /*****************************/ #if LCD_ONOFF /** LCD shield config **/ #if (LCD_TYPE == 0) #include "LCD_shield_config_4_3inch.h" #else #include "LCD_shield_config_7_1inch.h" #endif #endif /** Video and Grapics (GRAPHICS_LAYER_0) parameter **/ /* video input */ #if USE_VIDEO_CH == (0) #define VIDEO_INPUT_CH (DisplayBase::VIDEO_INPUT_CHANNEL_0) #define VIDEO_INT_TYPE (DisplayBase::INT_TYPE_S0_VFIELD) #else #define VIDEO_INPUT_CH (DisplayBase::VIDEO_INPUT_CHANNEL_1) #define VIDEO_INT_TYPE (DisplayBase::INT_TYPE_S1_VFIELD) #endif /* NTSC or PAL */ #if VIDEO_PAL == 0 #define COL_SYS (DisplayBase::COL_SYS_NTSC_358) #else #define COL_SYS (DisplayBase::COL_SYS_PAL_443) #endif /* Video input */ #define VIDEO_FORMAT (DisplayBase::VIDEO_FORMAT_RGB888) #define GRAPHICS_FORMAT (DisplayBase::GRAPHICS_FORMAT_RGB888) #define WR_RD_WRSWA (DisplayBase::WR_RD_WRSWA_32BIT) /* The size of the video input */ #if ((LCD_ONOFF) && (LCD_TYPE == 0)) #define VIDEO_PIXEL_HW LCD_PIXEL_WIDTH #define VIDEO_PIXEL_VW LCD_PIXEL_HEIGHT #else #define VIDEO_PIXEL_HW (640) /* VGA */ #define VIDEO_PIXEL_VW (480) /* VGA */ #endif /*! Frame buffer stride: Frame buffer stride should be set to a multiple of 32 or 128 in accordance with the frame buffer burst transfer mode. */ /* FRAME BUFFER Parameter GRAPHICS_LAYER_0 */ #define FRAME_BUFFER_NUM (2u) #define FRAME_BUFFER_BYTE_PER_PIXEL (4u) #define FRAME_BUFFER_STRIDE (((VIDEO_PIXEL_HW * FRAME_BUFFER_BYTE_PER_PIXEL) + 31u) & ~31u) #if LCD_ONOFF #define VIDEO_PIXEL_HW_STR (VIDEO_PIXEL_HW - 64) #define VIDEO_PIXEL_VW_STR (VIDEO_PIXEL_VW - 64) #define FRAME_BUFFER_BYTE_PER_PIXEL_STR (2u) #define FRAME_BUFFER_STRIDE_STR (((VIDEO_PIXEL_HW_STR * FRAME_BUFFER_BYTE_PER_PIXEL_STR) + 31u) & ~31u) #endif static DisplayBase Display; static DisplayApp display_app; static Timer decode_timer; #if LCD_ONOFF static DigitalOut lcd_pwon(P7_15); static DigitalOut lcd_blon(P8_1); static PwmOut lcd_cntrst(P8_15); #endif /* 32 bytes aligned */ static uint8_t user_frame_buffer0[FRAME_BUFFER_STRIDE * VIDEO_PIXEL_VW]__attribute((aligned(32))); static uint8_t user_frame_buffer1[FRAME_BUFFER_STRIDE * VIDEO_PIXEL_VW]__attribute((aligned(32))); #if LCD_ONOFF static uint8_t user_frame_buffer_string[FRAME_BUFFER_STRIDE_STR * VIDEO_PIXEL_VW_STR]__attribute((aligned(32))); static AsciiFont ascii_font(user_frame_buffer_string, VIDEO_PIXEL_HW_STR, VIDEO_PIXEL_VW_STR, FRAME_BUFFER_STRIDE_STR, FRAME_BUFFER_BYTE_PER_PIXEL_STR); static bool string_draw; #endif static uint8_t * decode_buffer = user_frame_buffer0; static uint8_t * FrameBufferTbl[FRAME_BUFFER_NUM] = {user_frame_buffer0, user_frame_buffer1}; static volatile int32_t vfield_count = 0; static int write_buff_num = 0; static bool graphics_init_end = false; static int decode_wait_time = 0; static void (*p_callback_func)(char * addr, int size); /****** cache control ******/ static void dcache_clean(void * p_buf, uint32_t size) { uint32_t start_addr = (uint32_t)p_buf & 0xFFFFFFE0; uint32_t end_addr = (uint32_t)p_buf + size; uint32_t addr; /* Data cache clean */ for (addr = start_addr; addr < end_addr; addr += 0x20) { __v7_clean_dcache_mva((void *)addr); } } static void dcache_invalid(void * p_buf, uint32_t size){ uint32_t start_addr = (uint32_t)p_buf & 0xFFFFFFE0; uint32_t end_addr = (uint32_t)p_buf + size; uint32_t addr; /* Data cache invalid */ for (addr = start_addr; addr < end_addr; addr += 0x20) { __v7_inv_dcache_mva((void *)addr); } } #if LCD_ONOFF /****** LCD ******/ static void Init_LCD_Display(void) { DisplayBase::graphics_error_t error; DisplayBase::lcd_config_t lcd_config; PinName lvds_pin[8] = { /* data pin */ P5_7, P5_6, P5_5, P5_4, P5_3, P5_2, P5_1, P5_0 }; lcd_pwon = 0; lcd_blon = 0; Thread::wait(100); lcd_pwon = 1; lcd_blon = 1; Display.Graphics_Lvds_Port_Init(lvds_pin, 8); /* Graphics initialization process */ lcd_config = LcdCfgTbl_LCD_shield; error = Display.Graphics_init(&lcd_config); if (error != DisplayBase::GRAPHICS_OK) { printf("Line %d, error %d\n", __LINE__, error); mbed_die(); } graphics_init_end = true; } static void Start_LCD_Display(uint8_t * p_buf) { DisplayBase::rect_t rect; rect.vs = 0; rect.vw = VIDEO_PIXEL_VW; rect.hs = 0; rect.hw = VIDEO_PIXEL_HW; Display.Graphics_Read_Setting( DisplayBase::GRAPHICS_LAYER_0, (void *)p_buf, FRAME_BUFFER_STRIDE, GRAPHICS_FORMAT, WR_RD_WRSWA, &rect ); Display.Graphics_Start(DisplayBase::GRAPHICS_LAYER_0); } #endif /****** Video ******/ static void IntCallbackFunc_Vfield(DisplayBase::int_type_t int_type) { /* Interrupt callback function for Vfield interruption */ if (vfield_count > 0) { vfield_count--; } } static void Wait_Vfield(const int32_t wait_count) { /* Wait for the specified number of times Vsync occurs */ vfield_count = wait_count; while (vfield_count > 0) { Thread::wait(1); } } static void Init_Video(void) { DisplayBase::graphics_error_t error; /* Graphics initialization process */ if (graphics_init_end == false) { /* When not initializing LCD, this processing is needed. */ error = Display.Graphics_init(NULL); if (error != DisplayBase::GRAPHICS_OK) { printf("Line %d, error %d\n", __LINE__, error); mbed_die(); } graphics_init_end = true; } #if VIDEO_INPUT_METHOD == VIDEO_CVBS error = Display.Graphics_Video_init( DisplayBase::INPUT_SEL_VDEC, NULL); if( error != DisplayBase::GRAPHICS_OK ) { printf("Line %d, error %d\n", __LINE__, error); mbed_die(); } #elif VIDEO_INPUT_METHOD == VIDEO_CMOS_CAMERA DisplayBase::video_ext_in_config_t ext_in_config; PinName cmos_camera_pin[11] = { /* data pin */ P2_7, P2_6, P2_5, P2_4, P2_3, P2_2, P2_1, P2_0, /* control pin */ P10_0, /* DV0_CLK */ P1_0, /* DV0_Vsync */ P1_1 /* DV0_Hsync */ }; /* MT9V111 camera input config */ ext_in_config.inp_format = DisplayBase::VIDEO_EXTIN_FORMAT_BT601; /* BT601 8bit YCbCr format */ ext_in_config.inp_pxd_edge = DisplayBase::EDGE_RISING; /* Clock edge select for capturing data */ ext_in_config.inp_vs_edge = DisplayBase::EDGE_RISING; /* Clock edge select for capturing Vsync signals */ ext_in_config.inp_hs_edge = DisplayBase::EDGE_RISING; /* Clock edge select for capturing Hsync signals */ ext_in_config.inp_endian_on = DisplayBase::OFF; /* External input bit endian change on/off */ ext_in_config.inp_swap_on = DisplayBase::OFF; /* External input B/R signal swap on/off */ ext_in_config.inp_vs_inv = DisplayBase::SIG_POL_NOT_INVERTED; /* External input DV_VSYNC inversion control */ ext_in_config.inp_hs_inv = DisplayBase::SIG_POL_INVERTED; /* External input DV_HSYNC inversion control */ ext_in_config.inp_f525_625 = DisplayBase::EXTIN_LINE_525; /* Number of lines for BT.656 external input */ ext_in_config.inp_h_pos = DisplayBase::EXTIN_H_POS_CRYCBY; /* Y/Cb/Y/Cr data string start timing to Hsync reference */ ext_in_config.cap_vs_pos = 6; /* Capture start position from Vsync */ ext_in_config.cap_hs_pos = 150; /* Capture start position form Hsync */ #if ((LCD_ONOFF) && (LCD_TYPE == 0)) /* The same screen ratio as the screen ratio of the LCD. */ ext_in_config.cap_width = 640; /* Capture width */ ext_in_config.cap_height = 363; /* Capture height Max 468[line] Due to CMOS(MT9V111) output signal timing and VDC5 specification */ #else ext_in_config.cap_width = 640; /* Capture width */ ext_in_config.cap_height = 468; /* Capture height Max 468[line] Due to CMOS(MT9V111) output signal timing and VDC5 specification */ #endif error = Display.Graphics_Video_init( DisplayBase::INPUT_SEL_EXT, &ext_in_config); if( error != DisplayBase::GRAPHICS_OK ) { printf("Line %d, error %d\n", __LINE__, error); mbed_die(); } /* Camera input port setting */ error = Display.Graphics_Dvinput_Port_Init(cmos_camera_pin, 11); if( error != DisplayBase::GRAPHICS_OK ) { printf("Line %d, error %d\n", __LINE__, error); mbed_die(); } #endif /* Interrupt callback function setting (Field end signal for recording function in scaler 0) */ error = Display.Graphics_Irq_Handler_Set(VIDEO_INT_TYPE, 0, IntCallbackFunc_Vfield); if (error != DisplayBase::GRAPHICS_OK) { printf("Line %d, error %d\n", __LINE__, error); mbed_die(); } } static void Start_Video(uint8_t * p_buf) { DisplayBase::graphics_error_t error; /* Video capture setting (progressive form fixed) */ error = Display.Video_Write_Setting( VIDEO_INPUT_CH, COL_SYS, p_buf, FRAME_BUFFER_STRIDE, VIDEO_FORMAT, WR_RD_WRSWA, VIDEO_PIXEL_VW, VIDEO_PIXEL_HW ); if (error != DisplayBase::GRAPHICS_OK) { printf("Line %d, error %d\n", __LINE__, error); mbed_die(); } /* Video write process start */ error = Display.Video_Start(VIDEO_INPUT_CH); if (error != DisplayBase::GRAPHICS_OK) { printf("Line %d, error %d\n", __LINE__, error); mbed_die(); } /* Video write process stop */ error = Display.Video_Stop(VIDEO_INPUT_CH); if (error != DisplayBase::GRAPHICS_OK) { printf("Line %d, error %d\n", __LINE__, error); mbed_die(); } /* Video write process start */ error = Display.Video_Start(VIDEO_INPUT_CH); if (error != DisplayBase::GRAPHICS_OK) { printf("Line %d, error %d\n", __LINE__, error); mbed_die(); } } /****** zxing_init ******/ void zxing_init(void (*pfunc)(char * addr, int size)) { #if LCD_ONOFF /* Initialization of LCD */ Init_LCD_Display(); /* When using LCD, please call before than Init_Video(). */ #endif /* Initialization of Video */ Init_Video(); /* Initialization memory */ for (int i = 0; i < FRAME_BUFFER_NUM; i++) { memset(FrameBufferTbl[i], 0, (FRAME_BUFFER_STRIDE * VIDEO_PIXEL_VW)); dcache_clean(FrameBufferTbl[i], (FRAME_BUFFER_STRIDE * VIDEO_PIXEL_VW)); } /* Start of Video */ Start_Video(FrameBufferTbl[write_buff_num]); /* Wait for first video drawing */ Wait_Vfield(2); #if LCD_ONOFF DisplayBase::rect_t rect; /* The layer by which the touch panel location is drawn */ ascii_font.Erase(0x00000000); /* rrrrGBAR (r:Reserve G:Green B:Blue A:Alpha R:Red */ dcache_clean(user_frame_buffer_string, sizeof(user_frame_buffer_string)); rect.vs = 32; rect.vw = VIDEO_PIXEL_VW_STR; rect.hs = 32; rect.hw = VIDEO_PIXEL_HW_STR; Display.Graphics_Read_Setting( DisplayBase::GRAPHICS_LAYER_1, (void *)user_frame_buffer_string, FRAME_BUFFER_STRIDE_STR, DisplayBase::GRAPHICS_FORMAT_ARGB4444, DisplayBase::WR_RD_WRSWA_32_16BIT, &rect ); Display.Graphics_Start(DisplayBase::GRAPHICS_LAYER_1); string_draw = false; /* Start of LCD */ Start_LCD_Display(FrameBufferTbl[write_buff_num]); /* Backlight on */ Thread::wait(200); lcd_cntrst.write(1.0); #endif p_callback_func = pfunc; decode_timer.reset(); decode_timer.start(); } /****** zxing_main ******/ int zxing_loop() { DisplayBase::graphics_error_t error; int decode_result = -1; vector<Ref<Result> > results; decode_buffer = FrameBufferTbl[write_buff_num]; write_buff_num++; if (write_buff_num >= FRAME_BUFFER_NUM) { write_buff_num = 0; } /* Change video buffer */ error = Display.Video_Write_Change(VIDEO_INPUT_CH, FrameBufferTbl[write_buff_num], FRAME_BUFFER_STRIDE); if (error != DisplayBase::GRAPHICS_OK) { printf("Line %d, error %d\n", __LINE__, error); mbed_die(); } Wait_Vfield(2); #if LCD_ONOFF /* Change LCD buffer */ Display.Graphics_Read_Change(DisplayBase::GRAPHICS_LAYER_0, (void *)FrameBufferTbl[write_buff_num]); #endif dcache_invalid(decode_buffer, (FRAME_BUFFER_STRIDE * VIDEO_PIXEL_VW)); /* Decode barcode image */ if (decode_timer.read_ms() >= decode_wait_time) { decode_timer.reset(); decode_result = ex_decode(decode_buffer, (FRAME_BUFFER_STRIDE * VIDEO_PIXEL_VW), VIDEO_PIXEL_HW, VIDEO_PIXEL_VW, &results); if (decode_result == 0) { char ** decode_str; int size; decode_str = (char **)&(results[0]->getText()->getText()); size = strlen(*decode_str); if (p_callback_func != NULL) { p_callback_func(*decode_str, size); } #if LCD_ONOFF /* Drow string */ ascii_font.Erase(0x00000090); /* rrrrGBAR (r:Reserve G:Green B:Blue A:Alpha R:Red */ int rest_size = strlen(*decode_str); int draw_idx = 0; int draw_size; int draw_line = 0; while (rest_size > 0) { draw_size = ascii_font.DrawStr(*decode_str + draw_idx, 6, 5 + (18 * draw_line), 0x0000ffff, 2); if (draw_size <= 0) { break; } rest_size -= draw_size; draw_idx += draw_size; draw_line++; } dcache_clean(user_frame_buffer_string, sizeof(user_frame_buffer_string)); string_draw = true; #endif decode_wait_time = 500; } else { #if LCD_ONOFF if (string_draw != false) { /* Clear string */ ascii_font.Erase(0x00000000); /* rrrrGBAR (r:Reserve G:Green B:Blue A:Alpha R:Red */ dcache_clean(user_frame_buffer_string, sizeof(user_frame_buffer_string)); string_draw = false; } #endif decode_wait_time = 10; } } display_app.SendRgb888(decode_buffer, VIDEO_PIXEL_HW, VIDEO_PIXEL_VW); return decode_result; }