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ad98xx readme and missing deps

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boyska 2018-10-23 23:34:57 +02:00
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12
ad9850/README.md Normal file
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AD98xx
--------
This library doesn't use SPI, just regular GPIO: this is simpler (imho) to implement and understand, and gives
you freedom to use whichever pin you prefer.
Notes
-------
Support for ad9833 is completely lacking (despite some code you might find).
I am uncertain about ad9850/1: the two are similar, and I have some difficulties understanding which do I
have. However, I think the implementation is correct.

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ad9850/gpio_utils.c Normal file
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#include <stdint.h>
#include <libopencm3/stm32/gpio.h>
#include "gpio_utils.h"
void gpio_pulseHigh( uint32_t gpioport, uint16_t gpios) {
gpio_set(gpioport, gpios);
for (int x = 0; x < 1000; x++) __asm__("nop");
gpio_clear(gpioport, gpios);
}
void gpio_pulseLow( uint32_t gpioport, uint16_t gpios) {
gpio_clear(gpioport, gpios);
for (int x = 0; x < 1000; x++) __asm__("nop");
gpio_set(gpioport, gpios);
}

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ad9850/gpio_utils.h Normal file
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#include <stdint.h>
void gpio_pulseHigh( uint32_t gpioport, uint16_t gpios);
void gpio_pulseLow( uint32_t gpioport, uint16_t gpios);