work on Qt GUI, still not working properly

src/CMakeLists.txt

@@ -1,4 +1,10 @@
+include_directories(${Qt5Widgets_INCLUDE_DIRS} ${QtQml_INCLUDE_DIRS})
+add_definitions(${Qt5Widgets_DEFINITIONS} ${QtQml_DEFINITIONS} ${${Qt5Quick_DEFINITIONS}})
 
 add_library(decn decn/decn.c)
 
-add_library(calc main.c calc.c utils.c lcd_emulator.c key.c)
+add_library(calc qt_main.cpp calc.c utils.c lcd_emulator.c key.c)
+target_link_libraries(calc Qt5::Widgets)
+
+add_executable(keytest key.c)
+target_compile_definitions(keytest PRIVATE KEY_TEST_APP=1)

src/calc.h

@@ -10,6 +10,10 @@
 #include <stdint.h>
 #include "decn/decn.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 void process_cmd(char cmd);
 
 void push_decn(const char* signif_str, int16_t exponent, uint8_t no_lift);
@@ -19,4 +23,8 @@ void set_x(const char* signif_str, int16_t exponent);
 __xdata dec80* get_x(void);
 __xdata dec80* get_y(void);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* SRC_CALC_H_ */

src/decn/decn.h

@@ -10,6 +10,10 @@
 #include <stdint.h>
 #include "../utils.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define DEC80_NUM_LSU 9
 
 //allow full range, but reserve -16384 for special numbers
@@ -57,4 +61,8 @@ int8_t decn_to_str(char* buf, const dec80* x);
 void decn_to_str_complete(char* buf, const dec80* x);
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* SRC_DEC_DECN_H_ */

src/key.c

@@ -237,7 +237,7 @@ const uint8_t* DebugGetKeys(void){
 
 
 
-#ifdef DESKTOP
+#ifdef KEY_TEST_APP
 
 int main(void){
 	KeyInit();

src/key.h

@@ -7,6 +7,11 @@
 #ifndef SRC_KEY_H_
 #define SRC_KEY_H_
 
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //#define DEBUG_KEYS
 
 void KeyInit(void);
@@ -24,4 +29,8 @@ extern uint8_t Keys[TOTAL_ROWS]; //only bottom nibbles get set
 extern int8_t NewKeyPressed;
 
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* SRC_KEY_H_ */

src/lcd.h

@@ -1,6 +1,9 @@
 #ifndef LCD_H
 #define LCD_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 #define MAX_CHARS_PER_LINE 16
 #define MAX_ROWS 2
@@ -18,5 +21,15 @@ void LCD_ClearToEnd(uint8_t curr_row);
 #define CGRAM_EXP 0
 #define CGRAM_EXP_NEG 1
 
+#include "utils.h"
+#ifdef DESKTOP
+const char* get_lcd_buf(void);
+void print_lcd(void);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif
 

src/lcd_emulator.c

@@ -6,26 +6,44 @@
 
 #include <stdio.h>
 #include <stdint.h>
+#include <ctype.h>
 #include "lcd.h"
 
 #define CR 13 // \r
 #define TAB 9 // \n
 
-static int lcd_row, lcd_col;
+static uint8_t lcd_row, lcd_col;
 static char lcd_buf[MAX_ROWS][MAX_CHARS_PER_LINE];
 
-void LCD_Open(void){
+const char* get_lcd_buf(void){
+	return &lcd_buf[0][0];
+}
 
+void print_lcd(void){
+	printf("(row,col)=(%d,%d)\n", lcd_row, lcd_col);
+	printf("|---|---|---|---|\n");
+	for (int i = 0; i < MAX_ROWS; i++){
+		printf("|");
+		for (int j = 0; j < MAX_CHARS_PER_LINE; j++){
+			printf("%c", lcd_buf[i][j]);
+		}
+		printf("\n");
+	}
+	printf("|---|---|---|---|\n");
+}
+
+void LCD_Open(void){
+	LCD_Clear();
 }
 
 void LCD_Clear(void){
-	lcd_row=0;
-	lcd_col=0;
 	for (int i = 0; i < MAX_ROWS; i++){
 		for (int j = 0; j < MAX_CHARS_PER_LINE; j++){
-			lcd_buf[i][j] = 0;
+			lcd_buf[i][j] = ' ';
 		}
 	}
+	lcd_row=0;
+	lcd_col=0;
 }
 
 void LCD_GoTo(unsigned int row, unsigned int col){
@@ -53,6 +71,18 @@ void LCD_OutString(const char *string, uint8_t max_chars) {
 	}
 }
 
+static int is_valid_character(char letter){
+	if (isdigit(letter)){
+		return 1;
+	} else if(letter == CGRAM_EXP || letter == CGRAM_EXP_NEG){
+		return 1;
+	} else if(letter == '.' || letter == ' '){
+		return 1;
+	}
+
+	return 0;
+}
+
 short TERMIO_PutChar(unsigned char letter) {
 	if (letter == CR || letter == '\n') {
 		LCD_Clear();
@@ -62,8 +92,14 @@ short TERMIO_PutChar(unsigned char letter) {
 		} else {
 			to_row(0);
 		}
-	} else {
-		lcd_buf[lcd_row][lcd_col] = letter;
+	} else if (is_valid_character(letter)) {
+		if (letter == CGRAM_EXP){
+			lcd_buf[lcd_row][lcd_col] = 'E';
+		} else if (letter == CGRAM_EXP_NEG) {
+			lcd_buf[lcd_row][lcd_col] = '-';
+		} else {
+			lcd_buf[lcd_row][lcd_col] = letter;
+		}
 		lcd_col++;
 		if (lcd_col > MAX_CHARS_PER_LINE) {
 			if (lcd_row == 0) {
@@ -72,6 +108,9 @@ short TERMIO_PutChar(unsigned char letter) {
 				to_row(0);
 			}
 		}
+	} else {
+		printf("\nerror @%d,%d, invalid character %d\n",
+				lcd_row, lcd_col, letter);
 	}
 
 	return 1;

src/main.c

@@ -8,7 +8,10 @@
 #include "decn/decn.h"
 #include "calc.h"
 #include "utils.h"
-#ifndef DESKTOP
+#ifdef DESKTOP
+#include <stdio.h>
+#include <QMutex>
+#else
 #include "stc15.h"
 #endif
 
@@ -24,10 +27,15 @@ static const char KEY_MAP[20] = {
 };
 
 
+#ifdef DESKTOP
+QMutex KeyMutex;
+#endif
+
 int8_t NewKeyBuf[4];
 volatile uint8_t new_key_write_i;
 volatile uint8_t new_key_read_i;
 volatile uint8_t NewKeyEmpty;
+
 #define INCR_NEW_KEY_I(i) i = (i + 1) & 3
 
 volatile uint8_t SecCount;
@@ -44,7 +52,11 @@ void timer0_isr() SDCC_ISR(1,1)
 	if (NewKeyPressed != -1){
 		if (!NewKeyEmpty && (new_key_write_i == new_key_read_i)){
 			//do not overwrite keymap currently being processed
-			INCR_NEW_KEY_I(new_key_write_i);
+//			INCR_NEW_KEY_I(new_key_write_i);
+#ifdef DESKTOP
+			printf("ERROR: key fifo full\n");
+#endif
+			return;
 		}
 		NewKeyBuf[new_key_write_i] = NewKeyPressed;
 		INCR_NEW_KEY_I(new_key_write_i);
@@ -106,9 +118,21 @@ char Buf[DECN_BUF_SIZE];
 __xdata char EntryBuf[MAX_CHARS_PER_LINE + 1];
 __xdata uint8_t ExpBuf[2];
 
+#ifdef DESKTOP
+static void print_entry_bufs(void){
+	printf("EntryBuf:~%s~\n", EntryBuf);
+	printf("ExpBuf:%c%c\n", '0'+ExpBuf[1], '0'+ExpBuf[0]);
+}
+#endif
+
 //#define DEBUG_UPTIME
 /*********************************************/
+#ifdef DESKTOP
+uint8_t ExitCalcMain;
+int calc_main()
+#else
 int main()
+#endif
 {
 	enum {
 		ENTERING_DONE,
@@ -152,6 +176,11 @@ int main()
 		if (Keys[0] == 8 && Keys[4] == 8){
 			TURN_OFF();
 		}
+#ifdef DESKTOP
+		if (ExitCalcMain){
+			return 0;
+		}
+#endif
 
 		LCD_GoTo(0,0);
 #ifdef DEBUG_UPTIME
@@ -200,12 +229,21 @@ int main()
 
 
 		///get new key
+#ifdef DESKTOP
+		KeyMutex.lock();
+#endif
 		if (!NewKeyEmpty){
 			int8_t i_key = NewKeyBuf[new_key_read_i];
 			INCR_NEW_KEY_I(new_key_read_i);
 			if (new_key_read_i == new_key_write_i){
 				NewKeyEmpty = 1;
 			}
+#ifdef DESKTOP
+			KeyMutex.unlock();
+			printf("\nprocessing key %c (r=%d, w=%d, e=%d)\n",
+					KEY_MAP[i_key], new_key_read_i, new_key_write_i, NewKeyEmpty);
+			printf("entry_i=%d,exp_i=%d\n", entry_i, exp_i);
+#endif
 #ifdef DEBUG_KEYS
 			LCD_GoTo(1,j);
 			TERMIO_PutChar(KEY_MAP[i_key]);
@@ -367,10 +405,21 @@ int main()
 				default: process_cmd(KEY_MAP[i_key]);
 				//////////
 			} //switch(KEY_MAP[i_key])
-		} //if found new key pressed
+		} else { //else for (if found new key pressed)
+			//no new key pressed
+#ifdef DESKTOP
+			KeyMutex.unlock();
+#endif
+			continue;
+		}
 
 		//print X
 		LCD_ClearToEnd(0); //go to 2nd row
+#ifdef DESKTOP
+		print_lcd();
+		printf("entry_i=%d,exp_i=%d\n", entry_i, exp_i);
+		print_entry_bufs();
+#endif
 		if (entering_exp == ENTERING_DONE){
 			disp_exponent = decn_to_str(Buf, get_x());
 			if (disp_exponent == 0){
@@ -419,6 +468,11 @@ int main()
 			TERMIO_PutChar(ExpBuf[0] + '0');
 		}
 		LCD_ClearToEnd(1);
+#ifdef DESKTOP
+		print_lcd();
+		printf("entry_i=%d,exp_i=%d\n", entry_i, exp_i);
+		print_entry_bufs();
+#endif
 		//turn backlight back on
 		BACKLIGHT_ON();
 	} //while (1)

src/qt_main.cpp

@@ -0,0 +1,3 @@
+// dummy .cpp file, so that this is c++
+
+#include "main.c"

src/utils.h

@@ -9,6 +9,10 @@
 
 #include <stdint.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 void _delay_ms(uint8_t ms);
 
 #define ACCURATE_DELAY_US
@@ -44,5 +48,10 @@ char* u32str(uint32_t x, char* buf, uint8_t base);
 #define TURN_OFF() P3_2 = 0
 #endif
 
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* SRC_UTILS_H_ */