restructuring

deprecated/F1/nokia5110/main.c

@@ -0,0 +1,107 @@
+/*
+ * main.c
+ *
+ * Copyright 2014 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include "main.h"
+#include "hw_init.h"
+#include "spi.h"
+#include "cdcacm.h"
+#include "pcd8544.h"
+
+volatile uint32_t Timer = 0; // global timer (milliseconds)
+usbd_device *usbd_dev;
+
+/**
+ * print current time in milliseconds: 4 bytes for ovrvlow + 4 bytes for time
+ * with ' ' as delimeter
+ */
+void print_time(){
+	print_int(Timer);
+}
+
+
+int main(){
+	uint32_t Old_timer = 0;
+
+	// RCC clocking: 8MHz oscillator -> 72MHz system
+	rcc_clock_setup_in_hse_8mhz_out_72mhz();
+
+	GPIO_init();
+
+	usb_disconnect(); // turn off USB while initializing all
+
+	// USB
+	usbd_dev = USB_init();
+
+	// SysTick is a system timer with 1ms period
+	SysTick_init();
+
+	switch_SPI(SPI1);
+	SPI_init();
+	pcd8544_init();
+
+	usb_connect(); // turn on USB
+
+	pcd8544_print((uint8_t*)"÷ÓÅ × ÐÏÒÑÄËÅ\n\nAll OK\n");
+
+	uint8_t wb;
+	int i;
+	while(1){
+		usbd_poll(usbd_dev);
+		if(usbdatalen){
+			for(i = 0; i < usbdatalen; ++i){
+				uint8_t rb = (uint8_t)usbdatabuf[i];
+				wb = pcd8544_putch(rb);
+				if(wb == rb){
+					pcd8544_roll_screen();
+					wb = pcd8544_putch(rb);
+				}
+				if(wb != rb){
+					usb_send(rb);
+					if(wb == '\n') usb_send('\n');
+				}
+			}
+			usbdatalen = 0;
+		}
+		//check_and_parse_UART(USART1); // also check data in UART buffers
+		if(Timer - Old_timer > 999){ // one-second cycle
+			Old_timer += 1000;
+			//print_int(Timer / 1000);newline();
+		}else if(Timer < Old_timer){ // Timer overflow
+			Old_timer = 0;
+		}
+	}
+}
+
+
+/**
+ * SysTick interrupt: increment global time & send data buffer through USB
+ */
+void sys_tick_handler(){
+	Timer++;
+	usbd_poll(usbd_dev);
+	usb_send_buffer();
+}
+
+// pause function, delay in ms
+void Delay(uint16_t time){
+	uint32_t waitto = Timer + time;
+	while(Timer < waitto);
+}