265 lines
7.8 KiB
Plaintext
265 lines
7.8 KiB
Plaintext
README
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======
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This directory contains the port of NuttX to the pcDuino v1 board
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See http://www.pcduino.com/ for information about pcDuino Lite, v1,
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and v2. These boards are based around the Allwinner A10 Cortex-A8 CPU.
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I have not compared these boards in detail, but I believe that the
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differences are cosmetic. This port was developed on the v1 board, but
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the others may be compatible:
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pcDuino Lite (See http://www.pcduino.com/?page_id=1707)
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ITEMS DETAILS
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-------------------- ---------------------------------------------------
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CPU 1GHz ARM Cortex A8
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GPU OpenGL ES2.0, OpenVG 1.1 Mali 400 core
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DRAM 512B
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Onboard Storage NO Flash, microSD card (TF) slot for up to 32GB
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Video Output HDMI
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Extension Interface 2.54mm Headers
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Network interface 10/100Mbps RJ45 and USB WiFi extension (not included)
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Power 5V, 2000mA
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Overall Size 125mm X 52mm
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pcDuino v1 (http://www.pcduino.com/?page_id=12)
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ITEMS DETAILS
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-------------------- ---------------------------------------------------
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Items Details
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CPU 1GHz ARM Cortex A8
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GPU OpenGL ES2.0, OpenVG 1.1 Mali 400 core
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* DRAM 1GB
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* Onboard Storage 2GB Flash, microSD card (TF) slot for up to 32GB
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Video Output HDMI
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Extension Interface 2.54mm Headers
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Network interface 10/100Mbps RJ45 and USB WiFi extension (not included)
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Power 5V, 2000mA
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Overall Size 125mm X 52mm
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pcDuino v2 (http://www.pcduino.com/?page_id=1618)
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ITEMS DETAILS
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-------------------- ---------------------------------------------------
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Items Details
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CPU 1GHz ARM Cortex A8
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GPU OpenGL ES2.0, OpenVG 1.1 Mali 400 core
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DRAM 1GB
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Onboard Storage 2GB Flash, microSD card (TF) slot for up to 32GB
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Video Output HDMI
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* Extension Interface Arduino Headers
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* Network interface 10/100Mbps RJ45 and on-board WiFi module
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Power 5V, 2000mA
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Overall Size 125mm X 52mm
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Main features of the Allwinner A10
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(See http://www.allwinnertech.com/en/product/a10.html):
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CPU
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- ARM Cortex<65>-A8
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- 32KB I-Cache
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- 32KB D-Cache
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- 256KB L2 Cache
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GPU
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- ARM Mali-400
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Video
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- UHD 2160P video decoding
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- 3D video decoding
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- Support various video decoding formats, including VP8, AVS, H. 264
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MVC, VC-1, MPEG-1,2,4, etc
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- H.264 HP video encoding up to 1080p @ 30 fps or dual-channel 720p @ 30
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fps
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Display
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- Multi-channel HD display
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- Integrated HDMI 1.4
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- YPbPr, CVBS, VGA
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- Multiple LCD interfaces, including CPU, RGB, LVDS up to Full HD
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Memory
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- 32-bit DDR2/DDR3
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- Memory capacity up to 16G bits
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- SLC/MLC/TLC/DDR NAND
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- 8 flash chips, 64-bit ECC
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Memory capacity up to 64GB
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Support NAND of 5xnm, 4xnm, 3xnm, 2xnm, etc
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Support NAND of Samsung, Toshiba, Hynix, etc
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Boot Devices
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- NAND Flash
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- SPI NOR Flash
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- SD Card
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- USB
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Contents
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========
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- pcDuino v1 Connectors
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- Serial Console
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- LEDs
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- Buttons
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- Booting NuttX from an SD card
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pcDuino v1 Connectors
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=====================
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TOP
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---
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- HDMI
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- RJ45
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- USB Host (2)
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- J11
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1. UART-Rx / GPIO0 UART2_RX
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2. UART-Tx / GPIO1 UART2_TX
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3. GPIO3 / GPIO2 GPIO2
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4. PWM0 / GPIO3 PWM0
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5. GPIO4 GPIO3
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6. PWM1 / GPIO5 PWM1
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7. PWM2 /GPIO6 PWM2
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8. GPIO7 GPIO4
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- J8
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1. GPIO8 GPIO5
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2. PWM3 / GPIO9 PWM3
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3. SPI_CS / GPIO10 / PWM4 SPI0_CS
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4. SPI_MOSI / GPIO11 / PWM5 SPI0_MOSI
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5. SPI_MISO / GPIO12 SPI0_MISO
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6. SPI_CLK / GPIO13 SPI0_CLK
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7. Gnd
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8. ARef
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9. I2C-SDA TWI2_SDA
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10. I2C-SCK TWI2_SCK
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- J12
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1. ADC0
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2. ADC1
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3. ADC2
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4. ADC3
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5. ADC4
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6. ADC5
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- J9
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1. 5V
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2. Gnd
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3. Gnd
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4. 5V
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5. 3.3V
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6. Reset
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7. 5V
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8. NC
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- J5 Debug Port
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1. Rx UART0-RX
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2. Gnd GND
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3. Tx UART0-TX
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- J6 SPI2
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1. SPI2_MISO
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2. DC_5V
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3. SPI2_CLK
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4. SPI2_MOSI
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5. RESET#
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6. GND
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- J7 SPI0
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1. SPI0_MISO
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2. DC_5V
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3. SPI0_CLK
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4. SPI0_MOSI
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5. RESET#
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6. GND
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- J10
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1. GPIO6
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2. GPIO8
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3. GPIO7
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4. GPIO9
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Bottom
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------
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- USB OTG
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- DC Power IN (USB)
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- microSD card slot
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Serial Console
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==============
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1. UART0 is available on J5 Debug Port.
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J15 Pin 1 Rx UART0-RX UART0_RX/IR1_RX/PB23
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J15 Pin 3 Tx UART0-TX UART0_TX/IR1_TX/PB22
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2. UART2 is available on J11
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J11 Pin1 UART-Rx / GPIO0 UART2_RX EINT31/SPI1_MISO/UART2_RX/PI19
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J11 Pin2 UART-Tx / GPIO1 UART2_TX EINT30/SPI1_MOSI/UART2_TX/PI18
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By default, the serial console will be provided on UART0 in all of these
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configurations.
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LEDs
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====
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The pcDuino v1 has four green LEDs; three can be controlled from software.
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Two are tied to ground and, hence, illuminated by driving the output pins
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to a high value:
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1. LED1 SPI0_CLK SPI0_CLK/UART5_RX/EINT23/PI11
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2. LED5 IPSOUT From the PMU (not controllable by software)
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And two are pull high and, hence, illuminated by grounding the output:
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3. LED3 RX_LED LCD1_D16/ATAD12/KP_IN6/SMC_DET/EINT16/CSI1_D16/PH16
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4. LED4 TX_LED LCD1_D15/ATAD11/KP_IN5/SMC_VPPPP/EINT15/CSI1_D15/PH15
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These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
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defined. In that case, the usage by the board port is defined in
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include/board.h and src/stm32_leds.c. The LEDs are used to encode OS-related
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events as follows:
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SYMBOL Meaning LED state
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LED1 LED3 LED4
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----------------- ----------------------- ---- ---- ------------
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LED_STARTED NuttX has been started ON OFF OFF
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LED_HEAPALLOCATE Heap has been allocated OFF ON OFF
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LED_IRQSENABLED Interrupts enabled ON ON OFF
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LED_STACKCREATED Idle stack created ON ON OFF
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LED_INIRQ In an interrupt N/C N/C Soft glow
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LED_SIGNAL In a signal handler N/C N/C Soft glow
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LED_ASSERTION An assertion failed N/C N/C Soft glow
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LED_PANIC The system has crashed N/C N/C 2Hz Flashing
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LED_IDLE MCU is is sleep mode Not used
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After booting, LED1 and 3 are not longer used by the system and can be used for
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other purposes by the application (Of course, all LEDs are available to the
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application if CONFIG_ARCH_LEDS is not defined.
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Buttons
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=======
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There are a total of five switches on-board. All pulled high and, hence,
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will be sensed as low when closed.
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SW1 Reset (not available to software)
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SW2 UBOOT UBOOT_SEL (?)
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SW3 Key_Back LCD1_D17/ATAD13/KP_IN7/SMC_VCCEN/EINT17/CSI1_D17/PH17
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SW4 Key_Home LCD1_D18/ATAD14/KP_OUT0/SMC_SLK/EINT18/CSI1_D18/PH18
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SW5 Key_Menu LCD1_D19/ATAD15/KP_OUT1/SMC_SDA/EINT19/CSI1_D19/PH19
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Booting NuttX from an SD card
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=============================
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These are the steps to get U-Boot booting from SD Card:
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$ git clone https://github.com/yuq/u-boot-sunxi.git
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$ cd u-boot-sunxi
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$ make pcduino CROSS_COMPILE=arm-none-eabi-
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$ sudo dd if=./spl/sunxi-spl.bin of=/dev/sdb bs=1024 seek=8
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$ sudo dd if=nuttx.bin of=/dev/sdb bs=1024 seek=32
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Reference: https://www.olimex.com/wiki/Bare_Metal_programming_A13#Stand_alone_program_running_with_uboot
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