Hola a tod@s, En un PIC18F4550 le he instalado el bootloader de micro chip, el HID Bootloader y he compilado uno de los ejemplos que vienen en las librerías, el tema es que ese código está creado en C18 y estoy intentando pasarlo a XC8 y en parte lo que conseguido, digo en parte porque al compilar no me da errores y al cargar el código en el pic, este no me funciona, pero si que puedo volver a cargar el código en C18 y funciona de nuevo.
No sé si el problema lo tenga en el remapeo de los vectores, como no lo he hecho nunca en XC8 no sé si lo estaré haciendo del modo correcto, según leo en en manual del compilador hay que cambiar las sentencias
_asm
....
código asm
....
_endasm
por
asm("código en asm");
Y no sé si será la forma correcta ni si hay que cambiar algo más o qué a ver si alguien que esté mas ducho en el tema me puede orientar.
El código en C18 es este:
#define REMAPPED_RESET_VECTOR_ADDRESS 0x1000
#define REMAPPED_HIGH_INTERRUPT_VECTOR_ADDRESS 0x1008
#define REMAPPED_LOW_INTERRUPT_VECTOR_ADDRESS 0x1018
#define APP_VERSION_ADDRESS 0x1016 //Fixed location, so the App FW image version can be read by the bootloader.
#define APP_SIGNATURE_ADDRESS 0x1006 //Signature location that must be kept at blaknk value (0xFFFF) in this project (has special purpose for bootloader).
//--------------------------------------------------------------------------
//Application firmware image version values, as reported to the bootloader
//firmware. These are useful so the bootloader can potentially know if the
//user is trying to program an older firmware image onto a device that
//has already been programmed with a with a newer firmware image.
//Format is APP_FIRMWARE_VERSION_MAJOR.APP_FIRMWARE_VERSION_MINOR.
//The valid minor version is from 00 to 99. Example:
//if APP_FIRMWARE_VERSION_MAJOR == 1, APP_FIRMWARE_VERSION_MINOR == 1,
//then the version is "1.01"
#define APP_FIRMWARE_VERSION_MAJOR 1 //valid values 0-255
#define APP_FIRMWARE_VERSION_MINOR 0 //valid values 0-99
//--------------------------------------------------------------------------
#pragma romdata AppVersionAndSignatureSection = APP_VERSION_ADDRESS
ROM unsigned char AppVersion[2] = {APP_FIRMWARE_VERSION_MINOR, APP_FIRMWARE_VERSION_MAJOR};
#pragma romdata AppSignatureSection = APP_SIGNATURE_ADDRESS
ROM unsigned short int SignaturePlaceholder = 0xFFFF;
#pragma code HIGH_INTERRUPT_VECTOR = 0x08
void High_ISR (void)
{
_asm goto REMAPPED_HIGH_INTERRUPT_VECTOR_ADDRESS _endasm
}
#pragma code LOW_INTERRUPT_VECTOR = 0x18
void Low_ISR (void)
{
_asm goto REMAPPED_LOW_INTERRUPT_VECTOR_ADDRESS _endasm
}
extern void _startup (void); // See c018i.c in your C18 compiler dir
#pragma code REMAPPED_RESET_VECTOR = REMAPPED_RESET_VECTOR_ADDRESS
void _reset (void)
{
_asm goto _startup _endasm
}
#pragma code REMAPPED_HIGH_INTERRUPT_VECTOR = REMAPPED_HIGH_INTERRUPT_VECTOR_ADDRESS
void Remapped_High_ISR (void)
{
_asm goto YourHighPriorityISRCode _endasm
}
#pragma code REMAPPED_LOW_INTERRUPT_VECTOR = REMAPPED_LOW_INTERRUPT_VECTOR_ADDRESS
void Remapped_Low_ISR (void)
{
_asm goto YourLowPriorityISRCode _endasm
}
#pragma code
//These are your actual interrupt handling routines.
#pragma interrupt YourHighPriorityISRCode
void YourHighPriorityISRCode()
{
//Check which interrupt flag caused the interrupt.
//Service the interrupt
//Clear the interrupt flag
//Etc.
#if defined(USB_INTERRUPT)
USBDeviceTasks();
#endif
} //This return will be a "retfie fast", since this is in a #pragma interrupt section
#pragma interruptlow YourLowPriorityISRCode
void YourLowPriorityISRCode()
{
//Check which interrupt flag caused the interrupt.
//Service the interrupt
//Clear the interrupt flag
//Etc.
} //This return will be a "retfie", since this is in a #pragma interruptlow section
Y el código en XC8 que me modificado es este:
#define REMAPPED_RESET_VECTOR_ADDRESS 0x1000
#define REMAPPED_HIGH_INTERRUPT_VECTOR_ADDRESS 0x1008
#define REMAPPED_LOW_INTERRUPT_VECTOR_ADDRESS 0x1018
#define APP_VERSION_ADDRESS 0x1016 //Fixed location, so the App FW image version can be read by the bootloader.
#define APP_SIGNATURE_ADDRESS 0x1006 //Signature location that must be kept at blaknk value (0xFFFF) in this project (has special purpose for bootloader).
//--------------------------------------------------------------------------
//Application firmware image version values, as reported to the bootloader
//firmware. These are useful so the bootloader can potentially know if the
//user is trying to program an older firmware image onto a device that
//has already been programmed with a with a newer firmware image.
//Format is APP_FIRMWARE_VERSION_MAJOR.APP_FIRMWARE_VERSION_MINOR.
//The valid minor version is from 00 to 99. Example:
//if APP_FIRMWARE_VERSION_MAJOR == 1, APP_FIRMWARE_VERSION_MINOR == 1,
//then the version is "1.01"
#define APP_FIRMWARE_VERSION_MAJOR 1 //valid values 0-255
#define APP_FIRMWARE_VERSION_MINOR 0 //valid values 0-99
//--------------------------------------------------------------------------
#pragma romdata AppVersionAndSignatureSection = APP_VERSION_ADDRESS
ROM unsigned char AppVersion[2] = {APP_FIRMWARE_VERSION_MINOR, APP_FIRMWARE_VERSION_MAJOR};
#pragma romdata AppSignatureSection = APP_SIGNATURE_ADDRESS
ROM unsigned short int SignaturePlaceholder = 0xFFFF;
#pragma code HIGH_INTERRUPT_VECTOR = 0x08
void High_ISR (void)
{
asm("REMAPPED_HIGH_INTERRUPT_VECTOR_ADDRESS");
}
#pragma code LOW_INTERRUPT_VECTOR = 0x18
void Low_ISR (void)
{
asm("REMAPPED_LOW_INTERRUPT_VECTOR_ADDRESS");
}
extern void _startup (void); // See c018i.c in your C18 compiler dir
#pragma code REMAPPED_RESET_VECTOR = REMAPPED_RESET_VECTOR_ADDRESS
void _reset (void)
{
asm("_startup");
}
#pragma code REMAPPED_HIGH_INTERRUPT_VECTOR = REMAPPED_HIGH_INTERRUPT_VECTOR_ADDRESS
void Remapped_High_ISR (void)
{
asm("YourHighPriorityISRCode");
}
#pragma code REMAPPED_LOW_INTERRUPT_VECTOR = REMAPPED_LOW_INTERRUPT_VECTOR_ADDRESS
void Remapped_Low_ISR (void)
{
asm("YourLowPriorityISRCode");
}
#pragma code
//These are your actual interrupt handling routines.
#pragma interrupt YourHighPriorityISRCode
void YourHighPriorityISRCode()
{
//Check which interrupt flag caused the interrupt.
//Service the interrupt
//Clear the interrupt flag
//Etc.
#if defined(USB_INTERRUPT)
USBDeviceTasks();
#endif
} //This return will be a "retfie fast", since this is in a #pragma interrupt section
#pragma interruptlow YourLowPriorityISRCode
void YourLowPriorityISRCode()
{
//Check which interrupt flag caused the interrupt.
//Service the interrupt
//Clear the interrupt flag
//Etc.
} //This return will be a "retfie", since this is in a #pragma interruptlow section
Que si para poder examinar mejor lo que he hecho les interesa que comparta los códigos pues me lo dicen y sin problema lo hago.
Gracias de ante mano por la ayuda
