X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/1d433d4506113c95285f633e3553ff62d4cfd05d..77a9df36a77d2523dd2bc24fa17f9f04c6c175c5:/Bootloaders/DFU/BootloaderDFU.c diff --git a/Bootloaders/DFU/BootloaderDFU.c b/Bootloaders/DFU/BootloaderDFU.c index 04b52f3f8..1dae162d2 100644 --- a/Bootloaders/DFU/BootloaderDFU.c +++ b/Bootloaders/DFU/BootloaderDFU.c @@ -38,59 +38,59 @@ /** Flag to indicate if the bootloader is currently running in secure mode, disallowing memory operations * other than erase. This is initially set to the value set by SECURE_MODE, and cleared by the bootloader - * once a memory erase has completed. + * once a memory erase has completed in a bootloader session. */ -bool IsSecure = SECURE_MODE; +static bool IsSecure = SECURE_MODE; /** Flag to indicate if the bootloader should be running, or should exit and allow the application code to run * via a soft reset. When cleared, the bootloader will abort, the USB interface will shut down and the application * jumped to via an indirect jump to location 0x0000 (or other location specified by the host). */ -bool RunBootloader = true; +static bool RunBootloader = true; /** Flag to indicate if the bootloader is waiting to exit. When the host requests the bootloader to exit and * jump to the application address it specifies, it sends two sequential commands which must be properly * acknowledged. Upon reception of the first the RunBootloader flag is cleared and the WaitForExit flag is set, * causing the bootloader to wait for the final exit command before shutting down. */ -bool WaitForExit = false; +static bool WaitForExit = false; /** Current DFU state machine state, one of the values in the DFU_State_t enum. */ -uint8_t DFU_State = dfuIDLE; +static uint8_t DFU_State = dfuIDLE; /** Status code of the last executed DFU command. This is set to one of the values in the DFU_Status_t enum after * each operation, and returned to the host when a Get Status DFU request is issued. */ -uint8_t DFU_Status = OK; +static uint8_t DFU_Status = OK; /** Data containing the DFU command sent from the host. */ -DFU_Command_t SentCommand; +static DFU_Command_t SentCommand; /** Response to the last issued Read Data DFU command. Unlike other DFU commands, the read command * requires a single byte response from the bootloader containing the read data when the next DFU_UPLOAD command * is issued by the host. */ -uint8_t ResponseByte; +static uint8_t ResponseByte; /** Pointer to the start of the user application. By default this is 0x0000 (the reset vector), however the host * may specify an alternate address when issuing the application soft-start command. */ -AppPtr_t AppStartPtr = (AppPtr_t)0x0000; +static AppPtr_t AppStartPtr = (AppPtr_t)0x0000; /** 64-bit flash page number. This is concatenated with the current 16-bit address on USB AVRs containing more than * 64KB of flash memory. */ -uint8_t Flash64KBPage = 0; +static uint8_t Flash64KBPage = 0; /** Memory start address, indicating the current address in the memory being addressed (either FLASH or EEPROM * depending on the issued command from the host). */ -uint16_t StartAddr = 0x0000; +static uint16_t StartAddr = 0x0000; -/** Memory end address, indicating the end address to read to/write from in the memory being addressed (either FLASH +/** Memory end address, indicating the end address to read from/write to in the memory being addressed (either FLASH * of EEPROM depending on the issued command from the host). */ -uint16_t EndAddr = 0x0000; +static uint16_t EndAddr = 0x0000; /** Main program entry point. This routine configures the hardware required by the bootloader, then continuously @@ -109,7 +109,7 @@ int main(void) /* Enable pull-up on the JTAG TCK pin so we can use it to select the mode */ PORTF |= (1 << 4); - _delay_ms(10); + Delay_MS(10); /* If the TCK pin is not jumpered to ground, start the user application instead */ RunBootloader = (!(PINF & (1 << 4))); @@ -119,6 +119,9 @@ int main(void) MCUCR &= ~(1 << JTD); #endif + /* Turn on first LED on the board to indicate that the bootloader has started */ + LEDs_SetAllLEDs(LEDS_LED1); + /* Enable global interrupts so that the USB stack can function */ sei(); @@ -149,28 +152,36 @@ void SetupHardware(void) /* Initialize the USB subsystem */ USB_Init(); + LEDs_Init(); + + /* Bootloader active LED toggle timer initialization */ + TIMSK1 = (1 << TOIE1); + TCCR1B = ((1 << CS11) | (1 << CS10)); } /** Resets all configured hardware required for the bootloader back to their original states. */ void ResetHardware(void) { /* Shut down the USB subsystem */ - USB_ShutDown(); + USB_Disable(); /* Relocate the interrupt vector table back to the application section */ MCUCR = (1 << IVCE); MCUCR = 0; } +/** ISR to periodically toggle the LEDs on the board to indicate that the bootloader is active. */ +ISR(TIMER1_OVF_vect, ISR_BLOCK) +{ + LEDs_ToggleLEDs(LEDS_LED1 | LEDS_LED2); +} + /** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to * the device from the USB host before passing along unhandled control requests to the library for processing * internally. */ void EVENT_USB_Device_ControlRequest(void) -{ - /* Get the size of the command and data from the wLength value */ - SentCommand.DataSize = USB_ControlRequest.wLength; - +{ /* Ignore any requests that aren't directed to the DFU interface */ if ((USB_ControlRequest.bmRequestType & (CONTROL_REQTYPE_TYPE | CONTROL_REQTYPE_RECIPIENT)) != (REQTYPE_CLASS | REQREC_INTERFACE)) @@ -178,9 +189,15 @@ void EVENT_USB_Device_ControlRequest(void) return; } + /* Activity - toggle indicator LEDs */ + LEDs_ToggleLEDs(LEDS_LED1 | LEDS_LED2); + + /* Get the size of the command and data from the wLength value */ + SentCommand.DataSize = USB_ControlRequest.wLength; + switch (USB_ControlRequest.bRequest) { - case REQ_DFU_DNLOAD: + case DFU_REQ_DNLOAD: Endpoint_ClearSETUP(); /* Check if bootloader is waiting to terminate */ @@ -203,7 +220,7 @@ void EVENT_USB_Device_ControlRequest(void) } /* First byte of the data stage is the DNLOAD request's command */ - SentCommand.Command = Endpoint_Read_Byte(); + SentCommand.Command = Endpoint_Read_8(); /* One byte of the data stage is the command, so subtract it from the total data bytes */ SentCommand.DataSize--; @@ -212,7 +229,7 @@ void EVENT_USB_Device_ControlRequest(void) for (uint8_t DataByte = 0; (DataByte < sizeof(SentCommand.Data)) && Endpoint_BytesInEndpoint(); DataByte++) { - SentCommand.Data[DataByte] = Endpoint_Read_Byte(); + SentCommand.Data[DataByte] = Endpoint_Read_8(); SentCommand.DataSize--; } @@ -267,7 +284,7 @@ void EVENT_USB_Device_ControlRequest(void) } /* Write the next word into the current flash page */ - boot_page_fill(CurrFlashAddress.Long, Endpoint_Read_Word_LE()); + boot_page_fill(CurrFlashAddress.Long, Endpoint_Read_16_LE()); /* Adjust counters */ WordsInFlashPage += 1; @@ -316,7 +333,7 @@ void EVENT_USB_Device_ControlRequest(void) } /* Read the byte from the USB interface and write to to the EEPROM */ - eeprom_write_byte((uint8_t*)StartAddr, Endpoint_Read_Byte()); + eeprom_write_byte((uint8_t*)StartAddr, Endpoint_Read_8()); /* Adjust counters */ StartAddr++; @@ -333,7 +350,7 @@ void EVENT_USB_Device_ControlRequest(void) Endpoint_ClearStatusStage(); break; - case REQ_DFU_UPLOAD: + case DFU_REQ_UPLOAD: Endpoint_ClearSETUP(); while (!(Endpoint_IsINReady())) @@ -348,12 +365,12 @@ void EVENT_USB_Device_ControlRequest(void) { /* Blank checking is performed in the DFU_DNLOAD request - if we get here we've told the host that the memory isn't blank, and the host is requesting the first non-blank address */ - Endpoint_Write_Word_LE(StartAddr); + Endpoint_Write_16_LE(StartAddr); } else { /* Idle state upload - send response to last issued command */ - Endpoint_Write_Byte(ResponseByte); + Endpoint_Write_8(ResponseByte); } } else @@ -388,9 +405,9 @@ void EVENT_USB_Device_ControlRequest(void) /* Read the flash word and send it via USB to the host */ #if (FLASHEND > 0xFFFF) - Endpoint_Write_Word_LE(pgm_read_word_far(CurrFlashAddress.Long)); + Endpoint_Write_16_LE(pgm_read_word_far(CurrFlashAddress.Long)); #else - Endpoint_Write_Word_LE(pgm_read_word(CurrFlashAddress.Long)); + Endpoint_Write_16_LE(pgm_read_word(CurrFlashAddress.Long)); #endif /* Adjust counters */ @@ -417,7 +434,7 @@ void EVENT_USB_Device_ControlRequest(void) } /* Read the EEPROM byte and send it via USB to the host */ - Endpoint_Write_Byte(eeprom_read_byte((uint8_t*)StartAddr)); + Endpoint_Write_8(eeprom_read_byte((uint8_t*)StartAddr)); /* Adjust counters */ StartAddr++; @@ -432,27 +449,27 @@ void EVENT_USB_Device_ControlRequest(void) Endpoint_ClearStatusStage(); break; - case REQ_DFU_GETSTATUS: + case DFU_REQ_GETSTATUS: Endpoint_ClearSETUP(); /* Write 8-bit status value */ - Endpoint_Write_Byte(DFU_Status); + Endpoint_Write_8(DFU_Status); /* Write 24-bit poll timeout value */ - Endpoint_Write_Byte(0); - Endpoint_Write_Word_LE(0); + Endpoint_Write_8(0); + Endpoint_Write_16_LE(0); /* Write 8-bit state value */ - Endpoint_Write_Byte(DFU_State); + Endpoint_Write_8(DFU_State); /* Write 8-bit state string ID number */ - Endpoint_Write_Byte(0); + Endpoint_Write_8(0); Endpoint_ClearIN(); Endpoint_ClearStatusStage(); break; - case REQ_DFU_CLRSTATUS: + case DFU_REQ_CLRSTATUS: Endpoint_ClearSETUP(); /* Reset the status value variable to the default OK status */ @@ -460,17 +477,17 @@ void EVENT_USB_Device_ControlRequest(void) Endpoint_ClearStatusStage(); break; - case REQ_DFU_GETSTATE: + case DFU_REQ_GETSTATE: Endpoint_ClearSETUP(); /* Write the current device state to the endpoint */ - Endpoint_Write_Byte(DFU_State); + Endpoint_Write_8(DFU_State); Endpoint_ClearIN(); Endpoint_ClearStatusStage(); break; - case REQ_DFU_ABORT: + case DFU_REQ_ABORT: Endpoint_ClearSETUP(); /* Reset the current state variable to the default idle state */ @@ -503,7 +520,7 @@ static void DiscardFillerBytes(uint8_t NumberOfBytes) } else { - Endpoint_Discard_Byte(); + Endpoint_Discard_8(); } } }