APF28Dev

Description

This is the Armadeus System's standard development board/baseboard for the APF28 module.

Extension connectors

Default pin usage on the extension connectors J9 and J10 - Each functionality can be disabled by simply using "make linux-menuconfig" (implementation on-going)

• Connector J9

J9 Pin	Function	J9 Pin	Function
1	3.3V	2	5V
3	SAIF0-SDATA0 / PWM6	4	GND
5	SAIF0-BITCLK / PWM5	6	SAIF1-SDATA0 / PWM7
7	SAIF0-LRCLK / PWM3	8	SAIF0-MCLK / PWM4
9	GND	10	GND
11	UART3_RX	12	UART2_RX
13	UART3_TX	14	UART2_TX
15	UART3_RTS	16	UART2_RTS
17	UART3_CTS	18	UART2_CTS
19	GND	20	GND
21	UART0_RX	22	GPIO
23	UART0_TX	24	GPIO
25	UART0_RTS	26	GPIO / PWM1
27	UART0_CTS	28	GPIO / PWM0
29	GND	30	GND
31	GPIO	32	CAN1_TX
33	GPIO	34	CAN1_RX
35	GPIO	36	GPIO
37	GND	38	GPIO
39	GND	40	GND

• Connector J10

J10 Pin	Function	J10 Pin	Function
1	3.3V	2	5V
3	GPIO	4	VBAT
5	GPIO	6	GPIO
7	GPIO	8	GPIO
9	GPIO	10	GPIO
11	GND	12	GPIO
13	GND	14	SPI3_SCK
15	GND	16	SPI3_MOSI
17	GND	18	SPI3_MISO
19	SPI2_SCK	20	SPI3_SS0
21	SPI2_MOSI	22	GND
23	SPI2_MISO	24	SPDIF
25	SPI2_SS0	26	GPIO
27	GPIO	28	I2C0_SDA
29	GPIO	30	i2C0_SCL
31	3.3V	32	GND
33	GND	34	GND
35	LRADC6	36	LRADC1
37	HSADC	38	LRADC0
39	GND	40	GND

Resources

• Datasheet and schema
• Product page on Armadeus Systems website

Feature list

Audio audio: audio interface Video Out LCD BackLight FrameBuffer

User Input touchscreen Wired communication UART SPI I2C USB Host USB OTG CAN bus Storage MultiMediaCard

Realtime RTC Other PWM: GPIO Driver JTAG Battery / Supply handling

Temporary fixes

Backlight

• Force backlight to ON state:

echo 124 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio124/direction
echo 1 > /sys/class/gpio/gpio124/value

Selecting LCD

Two LCD are available for the apf28Dev kit. By default, TM035KBH02 is selected in Linux. To use the LW700, under U-Boot do :

BIOS> setenv console ${console} lcd_panel=LW700
## Switch baudrate to 115200 bps andpress ENTER ...
BIOS> saveenv