1 files changed, 43 insertions, 0 deletions
diff --git a/src/ar100/gpio.h b/src/ar100/gpio.h
new file mode 100644
index 00000000..b5eea2f9
--- /dev/null
+++ b/src/ar100/gpio.h
@@ -0,0 +1,43 @@
+#ifndef __AR100_GPIO_H
+#define __AR100_GPIO_H
+
+#include <stdint.h>
+
+struct gpio_out {
+    uint8_t pin;
+    uint8_t bank;
+    uint32_t reg;
+};
+
+struct gpio_in {
+    uint8_t pin;
+    uint8_t bank;
+    uint32_t reg;
+};
+
+extern volatile uint32_t data_regs[8];
+
+
+struct gpio_in gpio_in_setup(uint8_t pin, int8_t pull_up);
+void gpio_in_reset(struct gpio_in pin, int8_t pull_up);
+uint8_t gpio_in_read(struct gpio_in pin);
+
+struct gpio_out gpio_out_setup(uint8_t pin, uint8_t val);
+void gpio_out_write(struct gpio_out pin, uint8_t val);
+void gpio_out_reset(struct gpio_out pin, uint8_t val);
+void gpio_out_toggle_noirq(struct gpio_out pin);
+void gpio_out_toggle(struct gpio_out pin);
+struct gpio_in gpio_in_setup(uint8_t pin, int8_t pull_up);
+void gpio_in_reset(struct gpio_in pin, int8_t pull_up);
+uint8_t gpio_in_read(struct gpio_in pin);
+
+struct spi_config {
+    void *spi;
+    uint32_t spi_cr1;
+};
+struct spi_config spi_setup(uint32_t bus, uint8_t mode, uint32_t rate);
+void spi_prepare(struct spi_config config);
+void spi_transfer(struct spi_config config, uint8_t receive_data
+  , uint8_t len, uint8_t *data);
+
+#endif