#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
+\r
// Number of PWM brightness levels supported\r
#define LED_BRIGHTNESS_LEVELS 8\r
\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
-#elif defined(__CODEVISIONAVR__)\r
-#pragma regalloc-\r
-register unsigned char ledPwmCount, sUartRxHead, sUartRxTail, ledPwmCycling;\r
-#pragma regalloc+\r
-\r
// Use avr_compat register variables\r
#else\r
REGISTER_VAR(unsigned char ledPwmCount, "r4", 15);\r
#define ledPwmPattern GPIOR0\r
#if defined(REGISTER_BIT)\r
#define BIT_led_on REGISTER_BIT(GPIOR1,0)\r
-#define BACKLIGHT_STATUS() BIT_led_on\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 BACKLIGHT_STATUS() (GPIOR1 & 0x01)\r
-#define BACKLIGHT_OFF() GPIOR1 &=~ ~0x01\r
+#define IS_BACKLIGHT_ON() (GPIOR1 & 0x01)\r
+#define BACKLIGHT_OFF() GPIOR1 &= ~0x01\r
#define BACKLIGHT_ON() GPIOR1 |= 0x01\r
#endif\r
\r
unsigned char ledPwmPos;\r
\r
if (brightness == 0) { // turn backlight off for 0 brightness\r
- if (BACKLIGHT_STATUS()) {\r
+ if (IS_BACKLIGHT_ON()) {\r
LedTimerStop();\r
ledPwmPattern = 0;\r
ledPwmCycling = 0;\r
ledPwmCycling = ledPwmPattern;\r
if (ledPwmPos >= LED_BRIGHTNESS_LEVELS-1) { // maximum brightness\r
// don't need PWM for continuously on\r
- if (BACKLIGHT_STATUS()) {\r
+ if (IS_BACKLIGHT_ON()) {\r
LedTimerStop();\r
LED_PORT |= (1<<LED_PIN);\r
}\r
} else {\r
- if (BACKLIGHT_STATUS()) {\r
+ if (IS_BACKLIGHT_ON()) {\r
LedTimerStart();\r
}\r
}\r
#endif\r
}\r
\r
-#if defined(__IMAGECRAFT__) || defined(__CODEVISIONAVR__)\r
+#if defined(__IMAGECRAFT__)\r
// Clock cycle = 67nS @ 14.7456MHz\r
// Delay resolution ~ 1uS @ 14.7456MHz\r
// So this function is only accurate at near above frequency\r
void _delay_us (unsigned int d) {\r
while (d-- != 0);\r
-#if defined(__IMAGECRAFT__)\r
asm("nop");\r
-#elif defined(__CODEVISIONAVR__)\r
- #asm("nop")\r
-#endif\r
}\r
#endif\r
\r
MAIN_FUNC() {\r
MCUSR = 0; // clear all reset flags\r
\r
+ wdt_reset();\r
#if defined(__CODEVISIONAVR__)\r
- #asm("wdr");\r
-#else\r
- wdt_reset();\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
// Initialize the AVR USART\r
UsartInit ();\r
\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("sei");\r
-#else\r
sei();\r
-#endif\r
while (1) {\r
unsigned char tail = sUartRxTail; // explicitly set order of volatile access\r
if (tail != sUartRxHead) { // Check if UART RX buffer has a character\r
} else {\r
// No characters waiting in RX buffer\r
\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("cli");\r
-#else\r
cli();\r
-#endif\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("wdr");\r
-#else\r
wdt_reset();\r
-#endif\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__)\r
- #asm("sei");\r
-#else\r
- sei();\r
+#if defined(__CODEVISIONAVR__) && defined(_OPTIMIZE_SIZE_)\r
+#pragma optsize+\r
#endif\r
\r
+ sei();\r
+\r
sleep_enable();\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("sleep");\r
-#else\r
sleep_cpu();\r
-#endif\r
sleep_disable();\r
\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("cli");\r
-#else\r
cli();\r
-#endif\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("wdr");\r
-#else\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__)\r
- #asm("sei");\r
-#else\r
- sei();\r
+#if defined(__CODEVISIONAVR__) && defined(_OPTIMIZE_SIZE_)\r
+#pragma optsize+\r
#endif\r
+\r
+ sei();\r
}\r
}\r
MAIN_FUNC_LAST();\r
void LcdWriteCmd (unsigned char Cmd) {\r
LcdBusyWait();\r
LCD_DATA_PORT = Cmd; // BusyWait leaves RS low in "Register mode"\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("nop");\r
-#else\r
- NOP();\r
-#endif\r
+ NOP();\r
LCD_CONTROL_PORT |= (1<<LCD_E);\r
-#if defined(__CODEVISIONAVR__)\r
- #if CONSERVATIVE_ENABLE_DURATION\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #else\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #endif\r
-#else\r
ENABLE_WAIT();\r
-#endif\r
LCD_CONTROL_PORT &= ~(1<<LCD_E);\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("nop");\r
-#else\r
- NOP();\r
-#endif\r
+ NOP();\r
LCD_CONTROL_PORT |= (1<<LCD_RS); // Set display to "Character mode"\r
}\r
\r
LcdBusyWait();\r
LCD_CONTROL_PORT |= (1<<LCD_RS); // Set display to "Character Mode"\r
LCD_DATA_PORT = c;\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("nop");\r
-#else\r
- NOP();\r
-#endif\r
+ NOP();\r
LCD_CONTROL_PORT |= (1<<LCD_E);\r
-#if defined(__CODEVISIONAVR__)\r
- #if CONSERVATIVE_ENABLE_DURATION\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #else\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #endif\r
-#else\r
ENABLE_WAIT();\r
-#endif\r
LCD_CONTROL_PORT &= ~(1<<LCD_E);\r
}\r
\r
LCD_DATA_DIR = 0x00; // Set LCD data port to inputs\r
LCD_CONTROL_PORT &= ~(1<<LCD_RS); // Set display to "Register mode"\r
LCD_CONTROL_PORT |= (1<<LCD_RW); // Put the display in the read mode\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("nop");\r
-#else\r
- NOP();\r
-#endif\r
+ NOP();\r
do {\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("wdr");\r
-#else\r
- wdt_reset();\r
-#endif\r
+ wdt_reset();\r
LCD_CONTROL_PORT |= (1<<LCD_E);\r
-#if defined(__CODEVISIONAVR__)\r
- #if CONSERVATIVE_ENABLE_DURATION\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #else\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #asm("nop")\r
- #endif\r
-#else\r
- ENABLE_WAIT();\r
-#endif\r
+ ENABLE_WAIT();\r
LCDStatus = LCD_DATA_PIN_REG;\r
LCD_CONTROL_PORT &= ~(1<<LCD_E);\r
} while (LCDStatus & (1<<LCD_BUSY));\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
do {\r
tail = sUartRxTail; // explicitly set order of volatile variable access\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("wdr");\r
-#else\r
- wdt_reset();\r
-#endif\r
+ wdt_reset();\r
} while (sUartRxHead == tail); // while buffer is empty\r
\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
-#if defined(__CODEVISIONAVR__)\r
- #asm("cli");\r
-#else\r
+ // CTS inactive if byte fills buffer after we remove current byte\r
cli();\r
-#endif\r
#endif\r
\r
// increment tail position\r
\r
#if USE_CTS\r
CTS_PORT |= (1<<CTS_PIN); // Ensure CTS is active since just removed a byte\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("sei");\r
-#else\r
sei(); // Allow UART ISR to read character and change potentially change CTS\r
-#endif\r
#endif\r
\r
return sUartRxBuf[sUartRxTail];\r
#if defined(__IMAGECRAFT__)\r
#pragma interrupt_handler timer0_compa_handler:iv_TIMER0_COMPA\r
void timer0_compa_handler(void)\r
-#elif defined(__CODEVISIONAVR__)\r
-interrupt [TIM0_COMPA] void timer0_compa_handler(void)\r
#else\r
ISR(TIMER0_COMPA_vect)\r
#endif\r
{\r
-#if defined(__CODEVISIONAVR__)\r
- #asm("sei");\r
-#else\r
sei(); // Okay to allow USART interrupts while controlling LED PWM\r
-#endif\r
\r
// Set current LED state based on cycling variable\r
if (ledPwmCycling & 0x01) {\r
projects / avr_serial_lcd.git / blobdiff