Attempt to use OV7670 camera with stm32f030f4
http://embeddedprogrammer.blogspot.ru/2012/07/hacking-ov7670-camera-module-sccb-cheat.html
Camera pins to MCU
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3V3 - to VCC
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GND - to GND
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SIOC - to PA1 (7)
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SIOD - to PA2 (8) via Resistor 1k
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XCLK - to PA7 (13)
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HREF - to PA4 (10)
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VSYNC - to PA5 (11)
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PCLK - to PA6 (12)
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RESET - to VCC
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PWDN - to GND
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LED on PA0 (6)