Renesas R8C/17 Manual de usuario descargar pdf (Pagina 12)

QDK™

R8C/Tau-NC30

www.state-machine.com/m16c

3 The Vanilla QP Port

The “vanilla” port shows how to use QP on a “bare metal” M16C/R8C-based system without any

underlying multitasking kernel. In the “vanilla” version of the QP, the only component requiring

platform-specific porting is the QF. The other two components: QEP and QS require merely recom-

pilation and will not be discussed here. Obviously, with the vanilla port you’re not using the QK

component. In case of M16C/R8C, the “vanilla” QF port is very similar to the generic “vanilla” port

described in Chapter 9 of [PSiCC2].

3.1 The qep_port.h Header File

The QEP header file for the M16C/R8C port with the NC30 compiler is located in

<qp>\ports\m16c\-

vanilla\nc30\qep_port.h

/* 1-byte signal space (255 signals) */

#define QP_SIGNAL_SIZE 1

/* exact-width integer types (NC30 compiler does NOT provide <stdint.h>) */

typedef unsigned char uint8_t;

typedef signed char int8_t;

typedef unsigned short uint16_t;

typedef signed short int16_t;

typedef unsigned long uint32_t;

typedef signed long int32_t;

#include "qep.h" /* QEP platform-independent public interface */

Listing 2 The qep_port.h header file

The event signal size

QP_SIGNAL_SIZE

is configured to use 1-byte (256 signals). The next good

choice for M16C/R8C is a 2-byte signal (64K signals). The Renesas NC30 compiler is a pre C99-

standard compiler and does not provide the exact-width integer types header file

<stdint.h>

(see

C99 Standard, Section 7.18.1.1). For such a compiler, the standard types are defined using the

typedef

directives.

3.2 The qf_port.h Header File

The QF header file for the Cortex-M3 port with the IAR compiler is located in

<qp>\ports\cortex-

m3\vanilla\iar\qf_port.h

. The following sub-sections focus on explaining the QF configuration es-

tablished by the

qf_port.h

header file shown in Listing 3.

/* various QF object sizes configuration for this port, see NOTE01 */

(1) #define QF_MAX_ACTIVE 8

(2) #define QF_EVENT_SIZ_SIZE 2

(3) #define QF_EQUEUE_CTR_SIZE 1

(4) #define QF_MPOOL_SIZ_SIZE 2

(5) #define QF_MPOOL_CTR_SIZE 2

(6) #define QF_TIMEEVT_CTR_SIZE 2

/* QF critical section entry/exit */

(7) /* QF_INT_KEY_TYPE not defined, see NOTE01 */

(8) #define QF_INT_LOCK(key_) _asm("FCLR I")

(9) #define QF_INT_UNLOCK(key_) _asm("FSET I")

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