* Improve uart dma ring buffer. Sending dma still missing

* Add digio module for controlling LEDs, Loudspeaker, and the Digital IOs
* General code improvements

stm-firmware/include/adc-meas.h

@@ -111,9 +111,9 @@ int adc_pt1000_get_current_resistance(float *resistance);
  * @param flag_to_set This flag is set to 1 once the data has been measured and is transferred. A negative value indicates an error
  * @return 0 if measurement could be started
  */
-int adc_pt1000_stream_raw_value_to_memory(uint16_t *adc_array, uint32_t length, volatile uint8_t *flag_to_set);
+int adc_pt1000_stream_raw_value_to_memory(float *adc_array, uint32_t length, volatile uint8_t *flag_to_set);
 
-void adc_pt1000_convert_raw_value_array_to_resistance(float *resistance_dest, uint16_t *raw_source, uint32_t count);
+void adc_pt1000_convert_raw_value_array_to_resistance(float *resistance_dest, float *raw_source, uint32_t count);
 
 /**
  * @brief Check if the ADC measurement experienced any kind of error (DMA, Analog Watchdog, etc...)

stm-firmware/include/digio.h

@@ -0,0 +1,47 @@
+#ifndef __DIGIO_H__
+#define __DIGIO_H__
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <helper-macros/helper-macros.h>
+
+#define DIGIO_PORT GPIOB
+#define DIGIO_RCC_MASK RCC_AHB1ENR_GPIOBEN
+#define DIGIO_PINS 4,5,6,7
+
+#ifdef DEBUGBUILD
+#define DIGIO_INOUT_DEFAULT 0,0,0,0
+#define DIGIO_ALTFUNC_DEFAULT 0,0,0,0
+#else
+#define DIGIO_INOUT_DEFAULT 0,0,2,2
+#define DIGIO_ALTFUNC_DEFAULT 0,0,7,7
+#endif
+
+#define BEEPER_PORT GPIOB
+#define BEEPER_RCC_MASK RCC_AHB1ENR_GPIOBEN
+
+
+void digio_setup_default_all();
+
+void digio_setup_pin(uint8_t num, uint8_t in_out, uint8_t alt_func);
+void digio_set(uint8_t num, int val);
+int digio_get(uint8_t num);
+
+#define LED_PORT GPIOB
+#define LED_RCC_MASK RCC_AHB1ENR_GPIOBEN
+#define LED_PINS 2,3
+
+void led_setup();
+void led_set(uint8_t num, int val);
+int led_get(uint8_t num);
+
+#define LOUDSPEAKER_PORT GPIOB
+#define LOUDSPEAKER_RCC_MASK RCC_AHB1ENR_GPIOBEN
+#define LOUDSPEAKER_PIN 1
+
+void loudspeaker_setup();
+void loudspeaker_set(int val);
+int loudspeaker_get();
+
+
+#endif /* __DIGIO_H__ */

stm-firmware/include/helper-macros/helper-macros.h

@@ -0,0 +1,14 @@
+#ifndef __HELPER_MACROS_H__
+#define __HELPER_MACROS_H__
+
+#include <stddef.h>
+
+#define xstr(x) str(x)
+#define str(x) #x
+
+#define CONCATX(x,y) CONCAT(x,y)
+#define CONCAT(x,y) x##y
+
+#define COUNT_OF(x) ((sizeof(x)/sizeof(0[x])) / ((size_t)(!(sizeof(x) % sizeof(0[x])))))
+
+#endif /* __HELPER_MACROS_H__ */

stm-firmware/include/uart/dma-ring-buffer.h

@@ -5,19 +5,18 @@
 #include <stm32f4xx.h>
 #include <stddef.h>
 
-struct dma_ring_buffer {
-	char *data_ptr;
+struct dma_ring_buffer_to_mem {
+	void *data_ptr;
 	size_t buffer_count;
 	DMA_Stream_TypeDef *dma;
 	size_t get_idx;
 	uint8_t base_dma_id;
+	size_t element_size;
 };
 
-int dma_ring_buffer_initialize(struct dma_ring_buffer *dma_buffer, uint8_t base_dma_id, DMA_Stream_TypeDef *dma_stream, size_t buffer_element_count, char *data_buffer, void *src_reg, uint8_t dma_trigger_channel);
-int dma_ring_buffer_get_data(struct dma_ring_buffer *buff, const char **data_buff, size_t *len);
-
-void dma_ring_buffer_stop(struct dma_ring_buffer *buff);
-
+int dma_ring_buffer_periph_to_mem_initialize(struct dma_ring_buffer_to_mem *dma_buffer, uint8_t base_dma_id, DMA_Stream_TypeDef *dma_stream, size_t buffer_element_count, size_t element_size, void *data_buffer, void *src_reg, uint8_t dma_trigger_channel);
+int dma_ring_buffer_periph_to_mem_get_data(struct dma_ring_buffer_to_mem *buff, const void **data_buff, size_t *len);
+void dma_ring_buffer_periph_to_mem_stop(struct dma_ring_buffer_to_mem *buff);
 #endif /* __DMA_RING_BUFFER_H__ */
 
 

stm-firmware/include/uart/uart.h

@@ -4,21 +4,24 @@
 #ifndef UART_UART_H_
 #define UART_UART_H_
 
-#define UART_RECEIVE_DMA_STREAM
+#define UART_RECEIVE_DMA_STREAM DMA2_Stream5
 
 #define UART_SEND_DMA_STREAM
 
-#define UART_PORT_RCC_MASK RCC_AHB1ENR_GPIOAEN
-
-#define UART_PORT GPIOA
-
 #define UART_PERIPH USART1
 #define UART_RCC_MASK RCC_APB2ENR_USART1EN
 
+#ifdef DEBUGBUILD
+
+#define UART_PORT GPIOA
+#define UART_PORT_RCC_MASK RCC_AHB1ENR_GPIOAEN
 #define UART_RX_PIN 10
 #define UART_TX_PIN 9
 #define UART_RX_PIN_ALTFUNC 7
 #define UART_TX_PIN_ALTFUNC 7
+#else
+
+#endif
 
 /* UART_DIV is 45.5625 => 115200 @ 84 MHz */
 #define UART_DIV_FRACTION 9U /* Equals 9/16 = 0.5625 */