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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1612 | dongfang | 1 | This is a list of the ATMega pins that are used for various ad-hoc I/O on the FC. |
| 2 | The A/D converter inputs, the ISP interface, I2C and the air pressure circuit and |
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| 3 | red and green LED outputs are not included. |
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| 4 | |||
| 5 | ATMEGA pin FC1.3 name FC 2.0 name Used for |
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| 6 | ------------------------------------------------------------------------------------------- |
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| 7 | PC7 SPEAKER SPEAKER Beeper. |
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| 8 | PC6 J6 SERVO_R FC1.3: J9. FC2.0: Reset on IC5/4017. |
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| 9 | PC5 PC5 PC5 Expansion port pin 6. "SPI slave select" in spi.c. |
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| 10 | PC4 PC4 PC4 Expansion port pin 5. PWM in from MK3Mag compass. |
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| 11 | PC3 PC3 PC3 SV2 pin 1 via transistor. Also known as J17. |
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| 12 | PC2 PC2 PC2 SV2 pin 5 via transistor. Also known as J16. |
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| 13 | |||
| 14 | PD7 SERVO SERVO_C FC1.3: J7. FC2.0: Clock on IC5/4017. |
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| 15 | PD6 ICP(PPM) ICP(PPM) R/C PPM signal in. |
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| 16 | PD5 J3 J3 R/C channel 5 forward (rc.c). Auto-zero feature on InvenSense gyros (InvenSense.c, dongfang only). |
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| 17 | PD4 J4 J4 R/C channel 6 forward (rc.c). Execution time measurement of main loop (main.c). |
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| 18 | PD3 J5 J5 TXD1 with ATMega644p. R/C channel 7 forward with ATMega644. |
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| 19 | PD2 RXD1 with ATMega644p |
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| 20 | |||
| 21 | TDX1 and RXD1 are the 2nd UART in ATMEGA644p. It can be used for direct connection of a UBlox GPS module (no Navi-Ctrl), or for connection of a Spectrum or DSL serial R/C satellite. |