diff options
Diffstat (limited to 'firmware')
| -rw-r--r-- | firmware/Roadmap.txt | 10 | ||||
| -rw-r--r-- | firmware/bootloaderconfig.h | 2 | ||||
| -rw-r--r-- | firmware/main.c | 37 |
3 files changed, 24 insertions, 25 deletions
diff --git a/firmware/Roadmap.txt b/firmware/Roadmap.txt index 564cf12..1612fcd 100644 --- a/firmware/Roadmap.txt +++ b/firmware/Roadmap.txt @@ -3,10 +3,11 @@ Development Roadmap 1.x Improvements (No protocol change, micronucleus host tool stays the same) Changes to client firmware: - - Only time out bootloader if program is loaded - - CRC check - - Move clean boot page to initialization - - Integrate blarrgg global optimizations + - Only time out bootloader if program is loaded - done + - Move clean boot page to initialization - done + - Integrate blargg optimizations + * turned "event"-variable into register to save memory + * moved flash buffer clean to hardware initialization function 2.x Improvements (New Protocol, new command line tool) @@ -22,6 +23,7 @@ Changes to protocol/command line tool - Move writing of tiny vector table to host tool. Reset vector patching stays on client -> no risk of bricking device, since bootloader will remain active - erase command + - CRC check
\ No newline at end of file diff --git a/firmware/bootloaderconfig.h b/firmware/bootloaderconfig.h index e1b2a4c..53c650f 100644 --- a/firmware/bootloaderconfig.h +++ b/firmware/bootloaderconfig.h @@ -282,7 +282,7 @@ these macros are defined, the boot loader uses them. */ #define AUTO_EXIT_NO_USB_MS 0 -#define AUTO_EXIT_MS 6000 +#define AUTO_EXIT_MS 5000 /* * Defines the setting of the RC-oscillator calibration after quitting the bootloader. (OSCCAL) diff --git a/firmware/main.c b/firmware/main.c index 401aaa8..3fca133 100644 --- a/firmware/main.c +++ b/firmware/main.c @@ -25,7 +25,6 @@ #include <avr/boot.h> #include <util/delay.h> - #include "bootloaderconfig.h" #include "usbdrv/usbdrv.c" @@ -49,7 +48,7 @@ // events system schedules functions to run in the main loop // static uint8_t events = 0; // bitmap of events to run -register uint8_t events asm( "r1" ); // register saves many bytes +register uint8_t events asm( "r3" ); // register saves many bytes #define EVENT_ERASE_APPLICATION 1 #define EVENT_WRITE_PAGE 2 @@ -156,7 +155,6 @@ static void writeWordToPageBuffer(uint16_t data) { previous_sreg=SREG; cli(); // ensure interrupts are disabled - boot_page_fill(currentAddress, data); // increment progmem address by one word @@ -260,7 +258,7 @@ static void initHardware (void) // reset system to a normal state and launch user program static void leaveBootloader(void) __attribute__((__noreturn__)); static inline void leaveBootloader(void) { - _delay_ms(10); // removing delay causes USB errors + _delay_ms(10); // removing delay causes USB errors bootLoaderExit(); cli(); @@ -308,28 +306,27 @@ int main(void) { LED_INIT(); # endif do { + clearEvents(); usbPoll(); _delay_us(100); - - // these next two freeze the chip for ~ 4.5ms, breaking usb protocol - // and usually both of these will activate in the same loop, so host - // needs to wait > 9ms before next usb request - if (isEvent(EVENT_ERASE_APPLICATION)) eraseApplication(); - if (isEvent(EVENT_WRITE_PAGE)) { - _delay_us(2000); // Wait for USB traffic to finish before halting CPU with write- - writeFlashPage(); - } - -# if BOOTLOADER_CAN_EXIT - if (isEvent(EVENT_EXECUTE)) break; // when host requests device run uploaded program -# endif - clearEvents(); + + // these next two freeze the chip for ~ 4.5ms, breaking usb protocol + // and usually both of these will activate in the same loop, so host + // needs to wait > 9ms before next usb request + if (isEvent(EVENT_ERASE_APPLICATION)) eraseApplication(); + if (isEvent(EVENT_WRITE_PAGE)) { + _delay_us(2000); // Wait for USB traffic to finish before halting CPU with write- + writeFlashPage(); + } # if LED_PRESENT LED_MACRO( ((uint8_t*)&idlePolls)[1] ) # endif - - } while(bootLoaderCondition()); /* main event loop runs so long as bootLoaderCondition remains truthy */ + + // Only try to execute program if reset vector is set - bootloader will not time out with erased memory + if (!bootLoaderCondition()&&(pgm_read_byte(BOOTLOADER_ADDRESS - TINYVECTOR_RESET_OFFSET)!=0xff)) fireEvent(EVENT_EXECUTE); + + } while(!isEvent(EVENT_EXECUTE)); /* main event loop runs as long as program is not executed */ } // set clock prescaler to desired clock speed (changing from clkdiv8, or no division, depending on fuses) |