Update Firmware with features:

* Shellmatta implemented using UART
* Version string implemented
* Increased heap size
* Add shellmatta printf support

stm-firmware/include/shell.h

@@ -0,0 +1,13 @@
+#ifndef __SHELL_H__
+#define __SHELL_H__
+
+#include <stddef.h>
+#include <shellmatta.h>
+
+shellmatta_handle_t shell_init(void);
+
+void shell_handle_input(shellmatta_handle_t shell, const char *data, size_t len);
+
+void shell_print_string(shellmatta_handle_t shell, const char *string);
+
+#endif /* __SHELL_H__ */

stm-firmware/include/stm32-gpio-macros.h

@@ -1,6 +1,7 @@
 #ifndef __STM32GPIOMACROS_H__
 #define __STM32GPIOMACROS_H__
 
+#define MODER_DELETE(pin) ~(0x3U << (pin * 2))
 #define OUTPUT(pin)  (0x01U << (pin * 2))
 #define PULLUP(pin) (0x1U << (pin* 2))
 #define ALTFUNC(pin) ((0x2) << (pin * 2))

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

@@ -1,4 +1,24 @@
 #ifndef __DMA_RING_BUFFER_H__
 #define __DMA_RING_BUFFER_H__
 
+#include <stdbool.h>
+#include <stm32f4xx.h>
+#include <stddef.h>
+
+struct dma_ring_buffer {
+	char *data_ptr;
+	size_t buffer_count;
+	DMA_Stream_TypeDef *dma;
+	size_t get_idx;
+	uint8_t base_dma_id;
+};
+
+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);
+
 #endif /* __DMA_RING_BUFFER_H__ */
+
+
+

stm-firmware/include/uart/uart.h

@@ -1,17 +1,51 @@
-/*
- * uart.h
- *
- *  Created on: Dec 15, 2014
- *      Author: shino-chan
- */
+#include <stdint.h>
+#include <stddef.h>
 
 #ifndef UART_UART_H_
 #define UART_UART_H_
 
+#define UART_RECEIVE_DMA_STREAM
+
+#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
+
+#define UART_RX_PIN 10
+#define UART_TX_PIN 9
+#define UART_RX_PIN_ALTFUNC 7
+#define UART_TX_PIN_ALTFUNC 7
+
+/* UART_DIV is 45.5625 => 115200 @ 84 MHz */
+#define UART_DIV_FRACTION 9U /* Equals 9/16 = 0.5625 */
+#define UART_DIV_MANTISSA 45U /* Equals 45 */
+
+#define UART_BRR_REG_VALUE ((UART_DIV_MANTISSA<<4) | UART_DIV_FRACTION);
+
 void initUART();
 void sendChar(char c);
 void sendString(char* s, int count);
-#ifdef _P20N_
-void yuri();
-#endif
+
+
+void uart_init_with_dma();
+
+void uart_disable();
+
+void uart_send_char(char c);
+
+void uart_send_array(const char *data, uint32_t len);
+
+void uart_send_string(char *string);
+
+void uart_send_array_with_dma(char *data, uint32_t len);
+
+void uart_send_string_with_dma(char *string);
+
+int uart_receive_data_with_dma(const char **data, size_t *len);
+
+
 #endif /* UART_UART_H_ */