**\r
** Compilers supported:\r
** - WinAVR-20071221 (includes avr-libc 1.6 required for proper _delay_us)\r
-** - IAR AVR 4.30\r
-** - Imagecraft AVR 7\r
+** - IAR AVR 4.30 and 5.10\r
+** - Imagecraft AVR 7.16\r
+** - Codevision AVR 2.02.06\r
**\r
** LICENSE\r
** See accompaning LICENSE file\r
#include "serial_lcd.h"\r
\r
#if defined(__GNUC__)\r
-FUSES = {\r
- .low = SUT1, \r
- .high = (unsigned char) (DWEN & WDTON & RSTDISBL & BODLEVEL1 & BODLEVEL2),\r
- .extended = EFUSE_DEFAULT,\r
-};\r
+//FUSES = {\r
+// .low = SUT1,\r
+ // .high = (unsigned char) (DWEN & WDTON & RSTDISBL & BODLEVEL1 & BODLEVEL2),\r
+ // .extended = EFUSE_DEFAULT,\r
+ //};\r
#endif\r
\r
// Number of PWM brightness levels supported\r
#define LCD_ON 0x0C\r
// Clear display command\r
#define LCD_CLR 0x01\r
-// Set 4 data bits \r
-#define LCD_4_Bit 0x20 \r
-// Set 8 data bits \r
-#define LCD_8_Bit 0x30 \r
-// Set number of lines \r
-#define LCD_4_Line 0x08 \r
+// Set 4 data bits\r
+#define LCD_4_Bit 0x20\r
+// Set 8 data bits\r
+#define LCD_8_Bit 0x30\r
+// Set number of lines\r
+#define LCD_4_Line 0x08\r
// Set 8 data bits\r
#define DATA_8 0x30\r
-// Set character font \r
-#define LCD_Font 0x04 \r
-// Turn the cursor on \r
-#define LCD_CURSOR_ON 0x02 \r
-// Turn on cursor blink \r
-#define LCD_CURSOR_BLINK 0x01 \r
+// Set character font\r
+#define LCD_Font 0x04\r
+// Turn the cursor on\r
+#define LCD_CURSOR_ON 0x02\r
+// Turn on cursor blink\r
+#define LCD_CURSOR_BLINK 0x01\r
\r
////// Serial command codes ///////\r
// ASCII control code to set brightness level\r
#pragma global_register ledPwmCount:20 sUartRxHead:21 sUartRxTail:22 ledPwmCycling:23\r
unsigned char ledPwmCount, sUartRxHead, sUartRxTail, ledPwmCycling;\r
\r
+// Use avr_compat register variables\r
#else\r
REGISTER_VAR(unsigned char ledPwmCount, "r4", 15);\r
REGISTER_VAR(unsigned char sUartRxHead, "r5", 14);\r
#endif\r
\r
#define ledPwmPattern GPIOR0\r
-#define ledStatus GPIOR1\r
+#if defined(REGISTER_BIT)\r
#define BIT_led_on REGISTER_BIT(GPIOR1,0)\r
+#define IS_BACKLIGHT_ON() BIT_led_on\r
+#define BACKLIGHT_OFF() BIT_led_on = 0\r
+#define BACKLIGHT_ON() BIT_led_on = 1\r
+#else\r
+#define IS_BACKLIGHT_ON() (GPIOR1 & 0x01)\r
+#define BACKLIGHT_OFF() GPIOR1 &= ~0x01\r
+#define BACKLIGHT_ON() GPIOR1 |= 0x01\r
+#endif\r
\r
// Function declarations\r
void LcdWriteCmd (unsigned char);\r
unsigned char LcdBusyWait (void);\r
static unsigned char WaitRxChar (void);\r
\r
-// ImageCraft doesn't support inline functions, so use preprocessor\r
-#if defined(__IMAGECRAFT__)\r
+// ImageCraft/Codevision don't support inline functions, so use preprocessor\r
+#if defined(__IMAGECRAFT__) || defined(__CODEVISIONAVR__)\r
#define LedTimerStop() TCCR0B = 0\r
// Start with 256 prescaler\r
#define LedTimerStart() TCCR0B = (1<<CS02)\r
TIMSK = (1<<OCIE0A); // Turn on timer0 COMPA intr (all other timer intr off)\r
LED_PORT &= ~(1<<LED_PIN); // Ensure LED is off during initialization\r
LED_DIR |= (1<<LED_PIN); // Ensure LED is output direction\r
- BIT_led_on = 0; // note that LED is off\r
+ BACKLIGHT_OFF(); // note that LED is off\r
ledPwmPattern = 0xFF; // maximum brightness\r
}\r
\r
unsigned char ledPwmPos;\r
\r
if (brightness == 0) { // turn backlight off for 0 brightness\r
- if (BIT_led_on) {\r
+ if (IS_BACKLIGHT_ON()) {\r
LedTimerStop();\r
ledPwmPattern = 0;\r
ledPwmCycling = 0;\r
return;\r
}\r
\r
- ledPwmPos = (brightness * (LED_BRIGHTNESS_LEVELS-1) + 127) >> 8;\r
+ ledPwmPos = (brightness * (LED_BRIGHTNESS_LEVELS-1) + (unsigned int) 127) >> 8;\r
// Below is probably not required, but ensures we don't exceed array\r
if (ledPwmPos > LED_BRIGHTNESS_LEVELS - 1)\r
ledPwmPos = LED_BRIGHTNESS_LEVELS - 1;\r
ledPwmCycling = ledPwmPattern;\r
if (ledPwmPos >= LED_BRIGHTNESS_LEVELS-1) { // maximum brightness\r
// don't need PWM for continuously on\r
- if (BIT_led_on) {\r
+ if (IS_BACKLIGHT_ON()) {\r
LedTimerStop();\r
LED_PORT |= (1<<LED_PIN);\r
}\r
} else {\r
- if (BIT_led_on) {\r
+ if (IS_BACKLIGHT_ON()) {\r
LedTimerStart();\r
}\r
}\r
INLINE_FUNC_DECLARE(static void LedPwmSwitchOff (void));\r
static inline void LedPwmSwitchOff (void) {\r
LED_PORT &= ~(1<<LED_PIN);\r
- BIT_led_on = 0;\r
+ BACKLIGHT_OFF();\r
LedTimerStop();\r
}\r
\r
INLINE_FUNC_DECLARE(static void LedPwmSwitchOn (void));\r
static inline void LedPwmSwitchOn (void) {\r
- BIT_led_on = 1;\r
+ BACKLIGHT_ON();\r
if (ledPwmPattern == 0xFF) { // maximum brightness, no need for PWM\r
LedTimerStop();\r
LED_PORT |= (1<<LED_PIN); // keep LED on at all times\r
MCUSR = 0; // clear all reset flags\r
\r
wdt_reset();\r
+#if defined(__CODEVISIONAVR__)\r
+#pragma optsize-\r
+#endif\r
WDTCSR |= (1<<WDCE)|(1<<WDE); // start timed sequence (keep old prescaler)\r
WDTCSR = (1<<WDE)|(1<<WDP3)|(1<<WDP0); // 1024K cycles, 8.0sec\r
+#if defined(__CODEVISIONAVR__) && defined(_OPTIMIZE_SIZE_)\r
+#pragma optsize+\r
+#endif\r
MCUCR &= ~((1<<SM1)|(1<<SM0)); // use idle sleep mode\r
\r
LedPwmInit ();\r
cli();\r
wdt_reset();\r
MCUSR &= ~(1<<WDRF); // clear any watchdog interrupt flags\r
+\r
+#if defined(__CODEVISIONAVR__)\r
+#pragma optsize-\r
+#endif\r
WDTCSR |= (1<<WDCE)|(1<<WDE); // start timed sequence (keep old prescaler)\r
WDTCSR &= ~(1<<WDE); // watchdog timer off\r
+#if defined(__CODEVISIONAVR__) && defined(_OPTIMIZE_SIZE_)\r
+#pragma optsize+\r
+#endif\r
+\r
sei();\r
\r
sleep_enable();\r
\r
cli();\r
wdt_reset();\r
+\r
+#if defined(__CODEVISIONAVR__)\r
+#pragma optsize-\r
+#endif\r
WDTCSR |= (1<<WDCE)|(1<<WDE); // start timed sequence (keep old prescaler)\r
WDTCSR &= ~(1<<WDCE);\r
+#if defined(__CODEVISIONAVR__) && defined(_OPTIMIZE_SIZE_)\r
+#pragma optsize+\r
+#endif\r
+\r
sei();\r
}\r
}\r
return (LCDStatus);\r
}\r
\r
-#if defined(__IMAGECRAFT__)\r
-#pragma interrupt_handler usart_rx_handler:iv_USART0_RXC\r
-void usart_rx_handler(void)\r
-#else\r
-ISR(USART_RX_vect)\r
+INLINE_FUNC_DECLARE(static void UartStoreRx (uint8_t rx));\r
+static inline void UartStoreRx (uint8_t rx) {\r
+ unsigned char tmphead;\r
+\r
+ if (UCSRA & (1<<FE)) {\r
+ // framing error. Currrently, this is silently ignored\r
+ // real applications may wish to output information to LCD to indicate\r
+ // erroroneous byte received\r
+ return;\r
+ }\r
+#ifdef HANDLE_DATA_OVER_RUN_ERROR\r
+ if (UCSRA & (1<<DOR)) {\r
+ // some applications may benefit from addind error notification for serial port data overruns\r
+ }\r
#endif\r
-{\r
- unsigned char rx = UDR;\r
+\r
// Calculate next buffer position.\r
- unsigned char tmphead = sUartRxHead;\r
+ tmphead = sUartRxHead;\r
if (tmphead == UART_RX_BUFFER_SIZE-1)\r
tmphead = 0;\r
else\r
#endif\r
}\r
\r
+#if defined(__IMAGECRAFT__)\r
+#pragma interrupt_handler usart_rx_handler:iv_USART0_RXC\r
+void usart_rx_handler(void)\r
+#else\r
+ISR(USART_RX_vect)\r
+#endif\r
+{\r
+ UartStoreRx(UDR);\r
+}\r
+\r
static unsigned char WaitRxChar (void) {\r
// waits for next RX character, then return it\r
unsigned char tail;\r
#if USE_CTS\r
// turn off interrupts so that if UART char ready to be stored, then storage\r
// will occur after CTS pin is set active. This allows UART ISR to set\r
- // CTS inactive if byte fills buffer after we remove current byte\r
+ // CTS inactive if byte fills buffer after we remove current byte\r
cli();\r
#endif\r
\r
projects / avr_serial_lcd.git / blobdiff