diff options
| -rw-r--r-- | firmware/bootloaderconfig.h | 42 |
1 files changed, 33 insertions, 9 deletions
diff --git a/firmware/bootloaderconfig.h b/firmware/bootloaderconfig.h index 1f1cb94..366994d 100644 --- a/firmware/bootloaderconfig.h +++ b/firmware/bootloaderconfig.h @@ -12,6 +12,9 @@ #ifndef __bootloaderconfig_h_included__ #define __bootloaderconfig_h_included__ +// uncomment this to enable the 'jumper from d5 to gnd to enable programming' mode +//#define BUILD_JUMPER_MODE 1 + #ifndef BOOTLOADER_ADDRESS #define BOOTLOADER_ADDRESS 0 #endif @@ -214,16 +217,37 @@ these macros are defined, the boot loader uses them. // set clock prescaler to a value before running user program //#define SET_CLOCK_PRESCALER _BV(CLKPS0) /* divide by 2 for 8mhz */ -#define bootLoaderInit() -#define bootLoaderExit() -#define bootLoaderCondition() (idlePolls < (AUTO_EXIT_MS * 10UL)) -#if LOW_POWER_MODE - // only starts bootloader if USB D- is pulled high on startup - by putting your pullup in to an external connector - // you can avoid ever entering an out of spec clock speed or waiting on bootloader when that pullup isn't there - #define bootLoaderStartCondition() \ - (PINB & (_BV(USB_CFG_DMINUS_BIT) | _BV(USB_CFG_DMINUS_BIT))) == _BV(USB_CFG_DMINUS_BIT) +#ifdef BUILD_JUMPER_MODE + #define START_JUMPER_PIN 5 + #define digitalRead(pin) (PINB & _BV(pin)) + #define bootLoaderStartCondition() (!digitalRead(START_JUMPER_PIN)) + #define bootLoaderCondition() 1 + + #ifndef __ASSEMBLER__ /* assembler cannot parse function definitions */ + static inline void bootLoaderInit(void) { + // DeuxVis pin-5 pullup + DDRB |= _BV(START_JUMPER_PIN); // is an input + PORTB |= _BV(START_JUMPER_PIN); // has pullup enabled + _delay_ms(10); + } + static inline void bootLoaderExit(void) { + // DeuxVis pin-5 pullup + PORTB = 0; + DDRB = 0; + } + #endif /* __ASSEMBLER__ */ #else - #define bootLoaderStartCondition() 1 + #define bootLoaderInit() + #define bootLoaderExit() + #define bootLoaderCondition() (idlePolls < (AUTO_EXIT_MS * 10UL)) + #if LOW_POWER_MODE + // only starts bootloader if USB D- is pulled high on startup - by putting your pullup in to an external connector + // you can avoid ever entering an out of spec clock speed or waiting on bootloader when that pullup isn't there + #define bootLoaderStartCondition() \ + (PINB & (_BV(USB_CFG_DMINUS_BIT) | _BV(USB_CFG_DMINUS_BIT))) == _BV(USB_CFG_DMINUS_BIT) + #else + #define bootLoaderStartCondition() 1 + #endif #endif /* ----------------------- Optional MCU Description ------------------------ */ |