Changes between Version 1 and Version 2 of FreeRunnerLEDs
- Timestamp:
- 2009-11-18T20:05:11Z (15 years ago)
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FreeRunnerLEDs
v1 v2 1 = Programming Neo FreeRunner LEDs =1 = Programming Neo !FreeRunner LEDs = 2 2 3 Neo FreeRunner has three LED indicators:3 Neo !FreeRunner has three LED indicators: 4 4 5 5 || '''Color''' || '''Location''' || '''IO Port/pin''' || … … 19 19 GPB has 11 pins (GPB0 through GPB1 inclusive). 20 20 21 Register descriptions: 21 '''Register descriptions:''' 22 22 * GPBCON: Two configuration bits per pin (GPBCON![1:0] for GPB0, GPBCON![3:2] for GPB1, etc.), 00 = Input, 01 = Output, 10 = XXX, 11 = reserved. XXX refers to internal signals, different for each pin. 23 23 * GPBDAT: Obvious, write in output mode and read in input mode. … … 26 26 For blinking LEDs, we select output mode (0b01) for GPB0..GPB2. Pull-down should be disabled. Then write to GPBDAT![0:2]. 27 27 28 References: 29 * [http://www.opatnet.cz/elektronika/datasheet/U/um_s3c2442b_rev12.pdf Samsung S3C2442B Processor Datasheet] Por gB Control Registers, Page 9-10.28 '''References:''' 29 * [http://www.opatnet.cz/elektronika/datasheet/U/um_s3c2442b_rev12.pdf Samsung S3C2442B Processor Datasheet] Port B Control Registers, Page 9-10. 30 30 * [http://downloads.openmoko.org/developer/schematics/GTA02/Schematics_Freerunner-GTA02_A5-A7cumulative_public_RC0.pdf Neo FreeRunner Schematics] MCU, sheet 3. 31 31 32 Notes: 32 '''Notes:''' 33 33 * Not verified