firmware: bootloader with firmware upgrade

src/bootldr/uart.h

@@ -0,0 +1,83 @@
+/*
+
+   uart.h: Definitions for the UART access routines
+
+*/
+
+#ifndef UART_H
+#define UART_H
+
+#include <stdio.h>
+#include <stdint.h>
+#include "config.h"
+
+//#ifdef CONFIG_UART_DEBUG
+#if 1
+
+#ifdef __AVR__
+#  include <avr/pgmspace.h>
+  void uart_puts_P(prog_char *text);
+#else
+#  define uart_puts_P(str) uart_puts(str)
+#endif
+
+void uart_init(void);
+unsigned char uart_getc(void);
+unsigned char uart_gotc(void);
+void uart_putc(char c);
+void uart_puts(const char *str);
+void uart_puthex(uint8_t num);
+void uart_trace(void *ptr, uint16_t start, uint16_t len);
+void uart_flush(void);
+int  printf(const char *fmt, ...);
+int  snprintf(char *str, size_t size, const char *format, ...);
+#define uart_putcrlf() uart_putc('\n')
+
+/* A few symbols to make this code work for all four UARTs */
+#if defined(CONFIG_UART_NUM) && CONFIG_UART_NUM == 0
+#  define UART_PCONBIT 3
+#  define UART_PCLKREG PCLKSEL0
+#  define UART_PCLKBIT 6
+#  define UART_REGS    LPC_UART0
+#  define UART_HANDLER UART0_IRQHandler
+#  define UART_IRQ     UART0_IRQn
+#elif CONFIG_UART_NUM == 1
+#  define UART_PCONBIT 4
+#  define UART_PCLKREG PCLKSEL0
+#  define UART_PCLKBIT 8
+#  define UART_REGS    LPC_UART1
+#  define UART_HANDLER UART1_IRQHandler
+#  define UART_IRQ     UART1_IRQn
+#elif CONFIG_UART_NUM == 2
+#  define UART_PCONBIT 24
+#  define UART_PCLKREG PCLKSEL1
+#  define UART_PCLKBIT 16
+#  define UART_REGS    LPC_UART2
+#  define UART_HANDLER UART2_IRQHandler
+#  define UART_IRQ     UART2_IRQn
+#elif CONFIG_UART_NUM == 3
+#  define UART_PCONBIT 25
+#  define UART_PCLKREG PCLKSEL1
+#  define UART_PCLKBIT 18
+#  define UART_REGS    LPC_UART3
+#  define UART_HANDLER UART3_IRQHandler
+#  define UART_IRQ     UART3_IRQn
+#else
+#  error CONFIG_UART_NUM is not set or has an invalid value!
+#endif
+
+#else
+
+#define uart_init()    do {} while(0)
+#define uart_getc()    0
+#define uart_putc(x)   do {} while(0)
+#define uart_puthex(x) do {} while(0)
+#define uart_flush()   do {} while(0)
+#define uart_puts_P(x) do {} while(0)
+#define uart_puts(x)   do {} while(0)
+#define uart_putcrlf() do {} while(0)
+#define uart_trace(a,b,c) do {} while(0)
+
+#endif
+
+#endif