1 files changed, 62 insertions, 0 deletions
diff --git a/src/hc32f460/gpio.h b/src/hc32f460/gpio.h
new file mode 100644
index 00000000..5e88a234
--- /dev/null
+++ b/src/hc32f460/gpio.h
@@ -0,0 +1,62 @@
+#ifndef __HC32F460_GPIO_H
+#define __HC32F460_GPIO_H
+
+#include <stdint.h> // uint32_t
+
+
+struct gpio_out {
+    uint32_t portAddress;   // M4_PORT or offset
+    uint16_t gpio;           // the mangled pin+port
+    uint16_t bitMask;       // the pin shifted to use in register
+};
+struct gpio_out gpio_out_setup(uint32_t gpio, uint32_t val);
+void gpio_out_reset(struct gpio_out g, uint32_t val);
+void gpio_out_toggle_noirq(struct gpio_out g);
+void gpio_out_toggle(struct gpio_out g);
+void gpio_out_write(struct gpio_out g, uint32_t val);
+
+struct gpio_in {
+    uint32_t portAddress;
+    uint16_t gpio;
+    uint16_t bitMask;
+};
+struct gpio_in gpio_in_setup(uint32_t gpio, int32_t pull_up);
+void gpio_in_reset(struct gpio_in g, int32_t pull_up);
+uint8_t gpio_in_read(struct gpio_in g);
+
+struct gpio_pwm {
+    void *timer;
+    uint32_t chan;
+};
+struct gpio_pwm gpio_pwm_setup(uint8_t gpio, uint32_t cycle_time, uint8_t val);
+void gpio_pwm_write(struct gpio_pwm g, uint32_t val);
+
+// all ADC operations will be on ADC1
+struct gpio_adc {
+    uint32_t chan;
+};
+struct gpio_adc gpio_adc_setup(uint32_t gpio);
+uint32_t gpio_adc_sample(struct gpio_adc g);
+uint16_t gpio_adc_read(struct gpio_adc g);
+void gpio_adc_cancel_sample(struct gpio_adc g);
+
+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);
+
+struct i2c_config {
+    void *i2c;
+    uint8_t addr;
+};
+
+struct i2c_config i2c_setup(uint32_t bus, uint32_t rate, uint8_t addr);
+void i2c_write(struct i2c_config config, uint8_t write_len, uint8_t *write);
+void i2c_read(struct i2c_config config, uint8_t reg_len, uint8_t *reg
+              , uint8_t read_len, uint8_t *read);
+
+#endif // gpio.h