Nokia N900

製作UART、USB接頭


司徒懶得再度購買USB Host接頭,因此,直接從之前的小米行動電源主板拆下使用


相當好拆的N900主板


UART(3.3V)和USB(側邊的USB Pad點)的腳位


使用OK線跳線


膠帶固定


從電池底部拉出OK線


使用三秒膠固定USB Host和UART排線(+5V, RX, TX, NC, GND)


完美的擺放位置


使用AB膠加強固定


上厚電的樣子


完成

開啟工程模式和Serial Interface

C:\Program Files\maemo\flasher-3.5>flasher-3.5.exe --enable-rd-mode
C:\Program Files\maemo\flasher-3.5>flasher-3.5.exe --set-rd-flags=serial-console

UART輸出訊息(115200 bps)

NOLO X-Loader (v1.4.14, Jun  3 2010)
Secondary image size 109384
Booting secondary
[   0.002] Nokia OMAP Loader v1.4.14 (Jun  3 2010) running on Nokia N900 F5 (RX-51)
[   0.014] I2C v3.12
[   0.033] System DMA v4.0
[   0.036] OneNAND device ID 0040, version ID 0031 (256 MiB, 83 MHz)
[   0.070]   OneNAND blocks unlocked in 27912 us
[   0.075]   Flash id: 204031
[   0.097] Partition table successfully read
[   0.104] Kernel rebooted with mode 'h'
[   0.108] Reset reason: sw_rst
[   0.111] McSPI v2.1
[   0.114] LP5523 found at I2C bus 2, address 0x32
[   0.125] SMB138C: Not loading driver (version reg. 0x4b)
[   0.131] BQ24150 (rev. 3) found on I2C bus 1, address 0x6b
[   0.137] SSI version 1.0
[   0.151] Battery voltage 4.048 V, BSI: 1029
[   0.165] Initializing LCD panel
[   0.168]   Detecting LCD panel moscow
[   0.172]     Panel ID: 108d77
[   0.175]   Detected LCD panel: acx565akm
[   0.179] DISPC: version 3.0
[   0.184]   LCD pixel clock 24000 kHz
[   0.215]   Logo drawn in 5 ms (11700 kB/s)
[   0.345]   Über-cool backlight fade-in took 9 ms
[   0.352] Initializing USB
[   0.360]   No USB host detected
[   0.363] Loading kernel image info
Loading kernel (1961 kB)... done in 64 ms (30251 kB/s)
[   0.437] Loading initfs image info
[   0.441] Total bootup time 444 ms
[   0.445] Serial console enabled


U-Boot 2013.04 (Apr 20 2013 - 11:00:56)

OMAP3530-HS ES3.1, CPU-OPP2, L3-165MHz, Max CPU Clock 600 MHz
Nokia RX-51 + LPDDR/OneNAND
I2C:   ready
DRAM:  256 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
Using default environment

In:    vga
Out:   vga
Err:   vga
Uncompressing Linux................................................................................................................... done, booting the kernel.


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