GESBC-7200

Pre-built Binary Images

Pre-compiled kernel image.

Pre-compiled kernel modules.

System device configuration binary file.

Pre-configured Lubuntu File System.

Kernel Source for GESBC-7200

System Diagram

Power Connection

The GESBC-7200 requires a 5V DC power supply.

Pin 1	Pin 2
5V DC	Ground

Debug Serial Port

The GESBC-7200 provides a LVTTL level debug serial port to monitor system status

Connector	Pin 1	Pin 2	Pin 3	Pin 4
J1	3.3V	GND	TX	RX

Expansion Headers

The GESBC-7200 has two 2.00mm spacing expansion headers to provide extensive peripheral functions.

Expansion header J2 signal list

Pin #	Name	Processor Pin Out	Pin #	Name	Processor Pin Out
1	CSI0-PCLK	PE0	2	CSI0-MCLK	PE1
3	CSI0-HSYNC	PE2	4	CSI0-VSYNC	PE3
5	CSI0-D0	PE4	6	CSI0-D1	PE5
7	CSI0-D2	PE6	8	CSI0-D3	PE7
9	CSI0-D4	PE8	10	CSI0-D5	PE9
11	CSI0-D6	PE10	12	CSI0-D7	PE11
13	CAM-RESET#	PH6	14	CAM-STBY-EN	PH7
15	TWI2-SCK	PB20	16	TWI2-SDA	PB21
17	CSI0-IOVDD		18	CAM-PWR-EN	PH8
19	VCC-3V		20	VCC-3V
21	GND		22	GND
23	UART3-TXD	PG6	24	UART3-RXD	PG7
25	UART3-RTS	PG8	26	UART3-CTS	PG9
27	UART4-TXD	PG10	28	UART4-RXD	PG11
29	UART5-TXD	PI10	30	UART5-RXD	PI11
31	SPI2-CLK	PB15	32	SPI2-CS0	PB14
33	SPI2-MISO	PB17	34	SPI2-MOSI	PB16
35	TWI3-SCK	PI0	36	TWI3-SDA	PI1
37	GPIO-PH17	PH17	38	GPIO-PH18	PH18
39	GND		40	LRADC1	LRADC1
41	VGA-HSYNC		42	GND
43	VGA-B		44	VGA-VSYNC
45	VGA-R		46	VGA-G
47	GND		48	GND
49	VCC-5V		50	VCC-5V

Expansion header J3 signal list

Pin #	Name	Processor Pin Out	Pin #	Name	Processor Pin Out
1	GND		2	GND
3	VCC-5V		4	VCC-5V
5	TP-INT	PH21	6	TWI1-SCK	PB18
7	TWI1-SDA	PB19	8	TP-WAKEUP	PB13
9	RTP-X1	X1_TP	10	RTP-X2	X2_TP
11	RTP-Y1	Y1_TP	12	RTP-Y2	Y2_TP
13	VCC-3V		14	VCC-3V
15	GND		16	GND
17	PWM0	PB2	18	NC
19	LCD0-PWR	PH11	20	LCD0-BL-EN	PH12
21	LCD0-D0	PD0	22	LCD0-D1	PD1
23	LCD0-D2	PD2	24	LCD0-D3	PD3
25	LCD0-D4	PD4	26	LCD0-D5	PD5
27	LCD0-D6	PD6	28	LCD0-D7	PD7
29	LCD0-D8	PD8	30	LCD0-D9	PD9
31	LCD0-D10	PD10	32	LCD0-D11	PD11
33	LCD0-D12	PD12	34	LCD0-D13	PD13
35	LCD0-D14	PD14	36	LCD0-D15	PD15
37	LCD0-D16	PD16	38	LCD0-D17	PD17
39	LCD0-D18	PD18	40	LCD0-D19	PD19
41	LCD0-D20	PD20	42	LCD0-D21	PD21
43	LCD0-D22	PD22	44	LCD0-D23	PD23
45	LCD0-CLK	PD24	46	LCD0-DE	PD25
47	LCD0-HSYNC	PD26	48	LCD0-VSYNC	PD27
49	GND		50	GND

Updating System Software

The GESBC-7200 has Lubuntu desktop file system pre-installed. The kernel image and system configuration file can be updated when customized kernel and/or system usage is needed. The following example demonstrates kernel and system configuration updating process,

#: mount /dev/nanda /mnt
#: cp <source directory>uImage /mnt/uImage
#: cp <source directory>script.bin /mnt/script.bin
#: umount /mnt

Control GPIO

The GESBC-7200 default system configuration includes 2 GPIO ports, PH17 and PH18. The PH17 is configured as output and PH18 is configured as input in the system configuration. User can change the GPIO direction using sysfs interface. The PH17 is GPIO port 1 in the sysfs interface and PH18 is GPIO port 2. User must first enable the port by exporting the port number to the sysfs interface. User can change the direction of the port using the sysfs interface as well. The following example shows how to enable the port 1 and change its direction.

#: echo 1 > /sys/class/gpio/export
#: ls /sys/class/gpio
export  gpio1_ph17  gpiochip1  unexport
#: echo 0 > /sys/class/gpio/gpio1_ph17/direction
#: cat /sys/class/gpio/gpio2_ph17/value
0
#: