git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@6 35acf78f-673a-0410-8e92-d51de3d6d3f4

master
gdisirio 2007-09-18 12:31:07 +00:00
parent f47b068594
commit 9f5b0b0b76
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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Buzzer driver for Olimex LPC-P2148.
* Uses the timer 1 for wave generation and a Virtual Timer for the sound
* duration.
* The driver also generates an event when the sound is done and the buzzer
* goes silent.
*/
#include <ch.h>
#include "lpc214x.h"
#include "buzzer.h"
EventSource BuzzerSilentEventSource;
#define StartCounter(t) ((t)->TC_EMR = 0xF1, (t)->TC_TCR = 1)
#define StopCounter(t) ((t)->TC_EMR = 0, (t)->TC_TCR = 2)
void InitBuzzer(void) {
chEvtInit(&BuzzerSilentEventSource);
/*
* Switches P0.12 and P0.13 to MAT1.0 and MAT1.1 functions.
* Enables Timer1 clock.
*/
PINSEL0 &= 0xF0FFFFFF;
PINSEL0 |= 0x0A000000;
PCONP = (PCONP & PCALL) | PCTIM1;
/*
* Timer setup.
*/
TC *tc = T1Base;
StopCounter(tc);
tc->TC_CTCR = 0; // Clock source is PCLK.
tc->TC_PR = 0; // Prescaler disabled.
tc->TC_MCR = 2; // Clear TC on match MR0.
}
static void stop(void *p) {
TC *tc = T1Base;
StopCounter(tc);
chEvtSendI(&BuzzerSilentEventSource);
}
void PlaySound(int freq, t_time duration) {
static VirtualTimer bvt;
TC *tc = T1Base;
chSysLock();
if (bvt.vt_func) { // If a sound is already being played
chVTResetI(&bvt); // then aborts it.
StopCounter(tc);
}
tc->TC_MR0 = tc->TC_MR1 = (PCLK / (freq * 2));
StartCounter(tc);
chVTSetI(&bvt, duration, stop, NULL);
chSysUnlock();
}

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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _BUZZER_H_
#define _BUZZER_H_
void InitBuzzer(void);
void PlaySound(int freq, t_time duration);
extern EventSource BuzzerSilentEventSource;
#endif /* _BUZZER_H_ */

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demos/LPC214x-GCC/ch.ld Normal file
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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* LPC2148 memory setup.
*/
__und_stack_size__ = 0x0004;
__abt_stack_size__ = 0x0004;
__fiq_stack_size__ = 0x0010;
__irq_stack_size__ = 0x0080;
__svc_stack_size__ = 0x0004;
__sys_stack_size__ = 0x0080;
__stacks_total_size__ = __und_stack_size__ + __abt_stack_size__ + __fiq_stack_size__ + __irq_stack_size__ + __svc_stack_size__ + __sys_stack_size__;
MEMORY
{
flash : org = 0x00000000, len = 512k - 12k
ram : org = 0x40000200, len = 32k - 0x200 - 288
}
__ram_start__ = ORIGIN(ram);
__ram_size__ = LENGTH(ram);
__ram_end__ = __ram_start__ + __ram_size__;
__dma_start__ = 0x7FD00000;
__dma_size__ = 8k;
__dma_end__ = 0x7FD00000 + __dma_size__;
SECTIONS
{
. = 0;
.text :
{
_text = .;
*(.text);
*(.rodata);
*(.rodata*);
*(.glue_7t);
*(.glue_7);
. = ALIGN(4);
_etext = .;
} > flash
_textdata = _etext;
.data :
{
_data = .;
*(.data)
. = ALIGN(4);
_edata = .;
} > ram AT > flash
.bss :
{
_bss_start = .;
*(.bss)
. = ALIGN(4);
*(COMMON)
. = ALIGN(4);
_bss_end = .;
} > ram
}
PROVIDE(end = .);
_end = .;
__heap_base__ = _end;
__heap_end__ = __ram_end__ - __stacks_total_size__;

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demos/LPC214x-GCC/chconf.h Normal file
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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Configuration file for LPC214x-GCC demo project.
*/
/**
* @addtogroup Config
* @{
*/
#ifndef _CHCONF_H_
#define _CHCONF_H_
/** Configuration option: if specified then time efficient rather than space
* efficient code is used when two possible implementations exist, note
* that this is not related to the compiler optimization options.*/
#define CH_OPTIMIZE_SPEED
/** Configuration option: if specified then the Virtual Timers subsystem is
* included in the kernel.*/
#define CH_USE_VIRTUAL_TIMERS
/** Configuration option: if specified then the System Timer subsystem is
* included in the kernel.*/
#define CH_USE_SYSTEMTIME
/** Configuration option: if specified then the \p chThdSleep() function is
* included in the kernel.
* @note requires \p CH_USE_VIRTUAL_TIMERS.*/
#define CH_USE_SLEEP
/** Configuration option: if specified then the \p chThdResume()
* function is included in the kernel.*/
#define CH_USE_RESUME
/** Configuration option: if specified then the \p chThdTerminate()
* and \p chThdShouldTerminate() functions are included in the kernel.*/
#define CH_USE_TERMINATE
/** Configuration option: if specified then the \p chThdWait() function
* is included in the kernel.*/
#define CH_USE_WAITEXIT
/** Configuration option: if specified then the Semaphores APIs are included
* in the kernel.*/
#define CH_USE_SEMAPHORES
/** Configuration option: if specified then the Semaphores with timeout APIs
* are included in the kernel.
* @note requires \p CH_USE_SEMAPHORES.
* @note requires \p CH_USE_VIRTUAL_TIMERS.*/
#define CH_USE_SEMAPHORES_TIMEOUT
/** Configuration option: if specified then the Semaphores APIs with priority
* shift are included in the kernel.
* @note requires \p CH_USE_SEMAPHORES.*/
//#define CH_USE_RT_SEMAPHORES
/** Configuration option: if specified then the Events APIs are included in
* the kernel.*/
#define CH_USE_EVENTS
/** Configuration option: if specified then the \p chEvtWaitTimeout()
* function is included in the kernel.
* @note requires \p CH_USE_EVENTS.
* @note requires \p CH_USE_VIRTUAL_TIMERS.*/
//#define CH_USE_EVENTS_TIMEOUT
/** Configuration option: if specified then the Synchronous Messages APIs are
* included in the kernel.*/
#define CH_USE_MESSAGES
/** Configuration option: if specified then the \p chMsgSendTimeout()
* function is included in the kernel.
* @note requires \p CH_USE_MESSAGES.
* @note requires \p CH_USE_VIRTUAL_TIMERS.*/
//#define CH_USE_MESSAGES_TIMEOUT
/** Configuration option: if specified then the \p chMsgSendWithEvent()
* function is included in the kernel.
* @note requires \p CH_USE_MESSAGES.
* @note requires \p CH_USE_VIRTUAL_TIMERS.*/
//#define CH_USE_MESSAGES_EVENT
/** Configuration option: if specified then the
* \p chThdGetExitEventSource() function is included in the kernel.
* @note requires \p CH_USE_MESSAGES.
* @note requires \p CH_USE_EVENTS.*/
#define CH_USE_EXIT_EVENT
/** Configuration option: if specified then the I/O queues APIs are included
* in the kernel.*/
#define CH_USE_QUEUES
/** Configuration option: if specified then the halfduplex queue APIs are
* included in the kernel.*/
#define CH_USE_QUEUES_HALFDUPLEX
/** Configuration option: if specified then the I/O queues with timeout
* APIs are included in the kernel.
* @note requires \p CH_USE_SEMAPHORES_TIMEOUT.*/
#define CH_USE_QUEUES_TIMEOUT
/** Configuration option: if specified then the full duplex serial driver APIs
* are included in the kernel.*/
#define CH_USE_SERIAL_FULLDUPLEX
/** Configuration option: if specified then the half duplex serial driver APIs
* are included in the kernel.*/
#define CH_USE_SERIAL_HALFDUPLEX
/** Configuration option: Frequency of the system timer that drives the system
* ticks. This also defines the system time unit.*/
#define CH_FREQUENCY 1000
/** Configuration option: This constant is the number of ticks allowed for the
* threads before preemption occurs.*/
#define CH_TIME_QUANTUM 20
/** Configuration option: Defines a CPU register to be used as storage for the
* global \p currp variable. Caching this variable in a register can greatly
* improve both space and time efficiency of the generated code. Another side
* effect is that one less register has to be saved during the context switch
* resulting in lower RAM usage and faster code.
* @note This option is only useable with the GCC compiler and is only useful
* on processors with many registers like ARM cores.
* @note If this option is enabled then ALL the libraries linked to the
* ChibiOS/RT code <b>must</b> be recompiled with the GCC option \p
* -ffixed-<reg>.
*/
//#define CH_CURRP_REGISTER_CACHE "r7"
#endif /* _CHCONF_H_ */
/** @} */

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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <ch.h>
#include "lpc214x.h"
#include "lpc214x_serial.h"
#include "buzzer.h"
extern void IrqHandler(void);
extern void T0IrqHandler(void);
#define VAL_TC0_PRESCALER 0
/*
* Pins configuration for Olimex LPC-P2148.
*
* PINSEL0
* P0 P0 P0 P0 P0 P0 RXD TXD SSE MOS MIS SCK SDA SCL RXD TXD
* 15 14 13 12 11 10 1 1 L0 I0 O0 0 0 0 0 0
* 00 00 00 00 00 00 01 01 01 01 01 01 01 01 01 01
* IN IN OUT OUT OUT OUT -- -- -- -- -- -- -- -- -- --
* 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0
*
* PINSEL1
* P0 AD P0 P0 -- -- AO -- VB P0 P0 SSE MOS MIS SCK P0
* 31 03 29 28 -- -- UT -- US 22 21 L1 I1 O1 1 16
* 00 01 00 00 00 00 10 00 01 00 00 10 10 10 10 00
* OUT -- OUT OUT -- -- -- -- -- OUT OUT -- -- -- -- IN
* 1 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0
*
* PINSEL2
* -- -- -- -- -- -- -- -- -- -- -- -- -- -- GP DBG --
* -- -- -- -- -- -- -- -- -- -- -- -- -- -- IO --
* 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0 1 00
* -- -- -- -- -- -- -- -- -- -- -- -- -- -- IN -- --
*/
#define VAL_PINSEL0 0x00055555
#define VAL_PINSEL1 0x100842A8
#define VAL_PINSEL2 0x00000004
#define VAL_FIO0DIR 0xB0603C00
#define VAL_FIO1DIR 0x00000000
/*
* Hardware initialization goes here.
* NOTE: Interrupts are still disabled.
*/
void hwinit(void) {
int i;
/*
* All peripherals clock disabled by default in order to save power.
*/
PCONP = PCRTC | PCTIM0;
/*
* MAM setup.
*/
MAMTIM = 0x3; /* 3 cycles for flash accesses. */
MAMCR = 0x2; /* MAM fully enabled. */
/*
* PLL setup for Fosc=12MHz and CCLK=48MHz.
* P=2 M=3.
*/
PLL *pll = PLLBase;
pll->PLL0_CFG = 0x23; /* P and M values. */
pll->PLL0_CON = 0x1; /* Enalbles the PLL 0. */
pll->PLL0_FEED = 0xAA;
pll->PLL0_FEED = 0x55;
while (!(pll->PLL0_STAT & 0x400))
; /* Wait for PLL lock. */
pll->PLL0_CON = 0x3; /* Connects the PLL. */
pll->PLL0_FEED = 0xAA;
pll->PLL0_FEED = 0x55;
/*
* VPB setup.
* PCLK = CCLK / 4.
*/
VPBDIV = VPD_D4;
/*
* I/O pins configuration.
*/
PINSEL0 = VAL_PINSEL0;
PINSEL1 = VAL_PINSEL1;
PINSEL2 = VAL_PINSEL2;
IO0DIR = VAL_FIO0DIR;
IO0SET = 0xFFFFFFFF;
IO1DIR = VAL_FIO1DIR;
IO1SET = 0xFFFFFFFF;
/*
* Interrupt vectors assignment.
* NOTE: Better reset everything in the VIC, it is a HUGE source of trouble.
*/
VIC *vic = VICBase;
vic->VIC_IntSelect = 0;
vic->VIC_IntEnable = 0;
vic->VIC_VectAddr = 0;
for (i = 0; i < 16; i++) {
vic->VIC_VectCntls[i] = 0;
vic->VIC_VectAddrs[i] = 0;
}
vic->VIC_DefVectAddr = (IOREG32)IrqHandler;
SetVICVector(T0IrqHandler, 0, SOURCE_Timer0);
SetVICVector(UART0IrqHandler, 1, SOURCE_UART0);
SetVICVector(UART1IrqHandler, 2, SOURCE_UART1);
/*
* System Timer initialization, 1ms intervals.
*/
vic->VIC_IntEnable |= INTMASK(SOURCE_Timer0);
TC *timer = T0Base;
timer->TC_PR = VAL_TC0_PRESCALER;
timer->TC_MR0 = (PCLK / CH_FREQUENCY) / (VAL_TC0_PRESCALER + 1);
timer->TC_MCR = 3; /* Interrupt and clear TC on match MR0. */
timer->TC_TCR = 2; /* Reset counter and prescaler. */
timer->TC_TCR = 1; /* Timer enabled. */
/*
* Other subsystems.
*/
InitSerial();
InitBuzzer();
}
void chSysPause(void) {
while (TRUE) {
// Note, it is disabled because it causes trouble with the JTAG probe.
// Enable it in the final code only.
// PCON = 1; /* Stops CPU clock until next interrupt. */
}
}
/*
* System halt.
* Yellow LED only.
*/
void chSysHalt(void) {
chSysLock();
IO0SET = 0x80000C00;
IO0CLR = 0x80000000;
while (TRUE)
;
}
/*
* Set a vector for an interrupt source, the vector is enabled too.
*/
void SetVICVector(void *handler, int vector, int source) {
VIC *vicp = VICBase;
vicp->VIC_VectAddrs[vector] = (IOREG32)handler;
vicp->VIC_VectCntls[vector] = (IOREG32)(source | 0x20);
}
/*
* Undefined Instruction exception handler.
* Yellow LED + RED LED 2.
*/
void UndHandler(void) {
IO0SET = 0x80000C00;
IO0CLR = 0x80000800;
while(TRUE)
;
}
/*
* Prefetch exception handler.
* Yellow LED + RED LED 1.
*/
void PrefetchHandler(void) {
IO0SET = 0x80000C00;
IO0CLR = 0x80000400;
while(TRUE)
;
}
/*
* Abort exception handler.
* Yellow LED + both RED LEDs.
*/
void AbortHandler(void) {
IO0SET = 0x80000C00;
IO0CLR = 0x80000C00;
while(TRUE)
;
}
/*
* Non-vectored IRQs handling here.
*/
void NonVectoredIrq(void) {
VICVectAddr = 0;
}
/*
* Timer 0 IRQ handling here.
*/
void Timer0Irq(void) {
chSchTimerHandlerI();
T0IR = 1; /* Clear interrupt on match MR0. */
VICVectAddr = 0;
}

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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _CHCORE_H_
#define _CHCORE_H_
typedef void *regarm;
/*
* Stack saved context.
*/
struct stackregs {
regarm r4;
regarm r5;
regarm r6;
#ifndef MK_CURRP_REGISTER_CACHE
regarm r7;
#endif
regarm r8;
regarm r9;
regarm r10;
regarm r11;
regarm lr;
};
typedef struct {
struct stackregs *r13;
} Context;
#ifdef MK_CURRP_REGISTER_CACHE
#define SETUP_CONTEXT(workspace, wsize, pf, arg) \
{ \
tp->p_ctx.r13 = (struct stackregs *)((BYTE8 *)workspace + \
wsize - \
sizeof(struct stackregs)); \
tp->p_ctx.r13->r4 = pf; \
tp->p_ctx.r13->r5 = arg; \
tp->p_ctx.r13->r6 = 0; \
tp->p_ctx.r13->r8 = 0; \
tp->p_ctx.r13->r9 = 0; \
tp->p_ctx.r13->r10 = 0; \
tp->p_ctx.r13->r11 = 0; \
tp->p_ctx.r13->lr = threadstart; \
}
#else
#define SETUP_CONTEXT(workspace, wsize, pf, arg) \
{ \
tp->p_ctx.r13 = (struct stackregs *)((BYTE8 *)workspace + \
wsize - \
sizeof(struct stackregs)); \
tp->p_ctx.r13->r4 = pf; \
tp->p_ctx.r13->r5 = arg; \
tp->p_ctx.r13->r6 = 0; \
tp->p_ctx.r13->r7 = 0; \
tp->p_ctx.r13->r8 = 0; \
tp->p_ctx.r13->r9 = 0; \
tp->p_ctx.r13->r10 = 0; \
tp->p_ctx.r13->r11 = 0; \
tp->p_ctx.r13->lr = threadstart; \
}
#endif
#define chSysLock() asm("msr CPSR_c, #0x9F")
#define chSysUnlock() asm("msr CPSR_c, #0x1F")
#define INT_REQUIRED_STACK 0x40 // Must include registers and stack frames.
#define UserStackSize(n) (sizeof(Thread) + \
sizeof(struct stackregs) + (n) + (INT_REQUIRED_STACK))
void chSysHalt(void) __attribute__((noreturn));
void chSysPause(void);
void chSysSwitchI(Context *oldp, Context *newp);
void threadstart(void);
void DefFiqHandler(void);
void DefIrqHandler(void);
void SpuriousHandler(void);
void SetVICVector(void *handler, int vector, int source);
#endif /* _CHCORE_H_ */

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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "chconf.h"
.set MODE_USR, 0x10
.set MODE_FIQ, 0x11
.set MODE_IRQ, 0x12
.set MODE_SVC, 0x13
.set MODE_ABT, 0x17
.set MODE_UND, 0x1B
.set MODE_SYS, 0x1F
.equ I_BIT, 0x80
.equ F_BIT, 0x40
.text
.code 32
.balign 4
.globl threadstart
threadstart:
msr CPSR_c, #MODE_SYS
mov r0, r5
/* blx r4*/
mov lr, pc
bx r4
bl chThdExit
.globl SwiHandler
SwiHandler:
b SwiHandler
.globl DefIrqHandler
DefIrqHandler:
b DefIrqHandler
.globl FiqHandler
FiqHandler:
b FiqHandler
.globl chSysSwitchI
chSysSwitchI:
#ifdef MK_CURRP_REGISTER_CACHE
stmfd sp!, {r4, r5, r6, r8, r9, r10, r11, lr}
str sp, [r0, #0]
ldr sp, [r1, #0]
ldmfd sp!, {r4, r5, r6, r8, r9, r10, r11, lr}
bx lr
#else
stmfd sp!, {r4, r5, r6, r7, r8, r9, r10, r11, lr}
str sp, [r0, #0]
ldr sp, [r1, #0]
ldmfd sp!, {r4, r5, r6, r7, r8, r9, r10, r11, lr}
bx lr
#endif
/*
* System stack frame structure after a context switch in the
* interrupt handler:
*
* High +------------+
* | R12 | -+
* | R3 | |
* | R2 | |
* | R1 | | External context: IRQ handler frame
* | R0 | |
* | LR_IRQ | | (user code return address)
* | SPSR | -+ (user code status)
* | .... | <- mk_DoRescheduleI() stack frame, optimize it for space
* | LR | -+ (system code return address)
* | R11 | |
* | R10 | |
* | R9 | |
* | R8 | | Internal context: mk_SwitchI() frame
* | (R7) | | (optional, see MK_CURRP_REGISTER_CACHE)
* | R6 | |
* | R5 | |
* SP-> | R4 | -+
* Low +------------+
*/
.globl IrqHandler
IrqHandler:
sub lr, lr, #4
stmfd sp!, {r0-r3, r12, lr}
mrs r0, SPSR // Workaround for ARM7TDMI+VIC
tst r0, #I_BIT // spurious interrupts.
ldmnefd sp!, {r0-r3, r12, pc}
bl NonVectoredIrq
b IrqCommon
.globl T0IrqHandler
T0IrqHandler:
sub lr, lr, #4
stmfd sp!, {r0-r3, r12, lr}
mrs r0, SPSR // Workaround for ARM7TDMI+VIC
tst r0, #I_BIT // spurious interrupts.
ldmnefd sp!, {r0-r3, r12, pc}^
bl Timer0Irq
b IrqCommon
.globl UART0IrqHandler
UART0IrqHandler:
sub lr, lr, #4
stmfd sp!, {r0-r3, r12, lr}
mrs r0, SPSR // Workaround for ARM7TDMI+VIC
tst r0, #I_BIT // spurious interrupts.
ldmnefd sp!, {r0-r3, r12, pc}^
bl UART0Irq
b IrqCommon
.globl UART1IrqHandler
UART1IrqHandler:
sub lr, lr, #4
stmfd sp!, {r0-r3, r12, lr}
mrs r0, SPSR // Workaround for ARM7TDMI+VIC
tst r0, #I_BIT // spurious interrupts.
ldmnefd sp!, {r0-r3, r12, pc}^
bl UART1Irq
b IrqCommon
/*
* Common exit point for all IRQ routines, it performs the rescheduling if
* required.
*/
IrqCommon:
bl chSchRescRequiredI
cmp r0, #0 // Simply returns if a
ldmeqfd sp!, {r0-r3, r12, pc}^ // reschedule is not required.
// Saves the IRQ mode registers in the system stack.
ldmfd sp!, {r0-r3, r12, lr} // IRQ stack now empty.
msr CPSR_c, #MODE_SYS | I_BIT
stmfd sp!, {r0-r3, r12} // Registers on System Stack.
msr CPSR_c, #MODE_IRQ | I_BIT
mrs r0, SPSR
mov r1, lr
msr CPSR_c, #MODE_SYS | I_BIT
stmfd sp!, {r0, r1} // Push R0=SPSR, R1=LR_IRQ.
// Context switch.
bl chSchDoRescheduleI
// Re-establish the IRQ conditions again.
ldmfd sp!, {r0, r1} // Pop R0=SPSR, R1=LR_IRQ.
msr CPSR_c, #MODE_IRQ | I_BIT
msr SPSR_fsxc, r0
mov lr, r1
msr CPSR_c, #MODE_SYS | I_BIT
ldmfd sp!, {r0-r3, r12}
msr CPSR_c, #MODE_IRQ | I_BIT
subs pc, lr, #0

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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _CHTYPES_H_
#define _CHTYPES_H_
/*
* Generic types often dependant on the compiler.
*/
#define BOOL char
#define BYTE8 unsigned char
#define WORD16 short
#define UWORD16 unsigned short
#define LONG32 int
#define ULONG32 unsigned int
#define PTR_EQ int
typedef BYTE8 t_tmode;
typedef BYTE8 t_tstate;
typedef WORD16 t_prio;
typedef PTR_EQ t_msg;
typedef LONG32 t_eventid;
typedef ULONG32 t_eventmask;
typedef ULONG32 t_time;
typedef LONG32 t_semcnt;
typedef ULONG32 t_size;
#define MINPRIO 0x8000
#define MAXPRIO 0x7fff
#define MINDELTA 0
#define MAXDELTA 0xffff
#define INLINE inline
#endif /* _CHTYPES_H_ */

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demos/LPC214x-GCC/crt0.s Normal file
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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Generic ARM startup file for ChibiOS/RT.
*/
.extern _main
.set MODE_USR, 0x10
.set MODE_FIQ, 0x11
.set MODE_IRQ, 0x12
.set MODE_SVC, 0x13
.set MODE_ABT, 0x17
.set MODE_UND, 0x1B
.set MODE_SYS, 0x1F
.equ I_BIT, 0x80
.equ F_BIT, 0x40
.text
.code 32
.balign 4
/*
* System entry points.
*/
_start:
b ResetHandler
ldr pc, _undefined
ldr pc, _swi
ldr pc, _prefetch
ldr pc, _abort
nop
ldr pc, [pc,#-0xFF0] /* VIC - IRQ Vector Register */
ldr pc, _fiq
_undefined:
.word UndHandler
_swi:
.word SwiHandler
_prefetch:
.word PrefetchHandler
_abort:
.word AbortHandler
_fiq:
.word FiqHandler
.word 0
.word 0
/*
* Reset handler.
*/
ResetHandler:
/*
* Stack pointers initialization.
*/
ldr r0, =__ram_end__
/* Undefined */
msr CPSR_c, #MODE_UND | I_BIT | F_BIT
mov sp, r0
ldr r1, =__und_stack_size__
sub r0, r0, r1
/* Abort */
msr CPSR_c, #MODE_ABT | I_BIT | F_BIT
mov sp, r0
ldr r1, =__abt_stack_size__
sub r0, r0, r1
/* FIQ */
msr CPSR_c, #MODE_FIQ | I_BIT | F_BIT
mov sp, r0
ldr r1, =__fiq_stack_size__
sub r0, r0, r1
/* IRQ */
msr CPSR_c, #MODE_IRQ | I_BIT | F_BIT
mov sp, r0
ldr r1, =__irq_stack_size__
sub r0, r0, r1
/* Supervisor */
msr CPSR_c, #MODE_SVC | I_BIT | F_BIT
mov sp, r0
ldr r1, =__svc_stack_size__
sub r0, r0, r1
/* System */
msr CPSR_c, #MODE_SYS | I_BIT | F_BIT
mov sp, r0
ldr r1, =__sys_stack_size__
sub r0, r0, r1
/*
* Check on allocated stacks size. This should never happen unless you
* don't care to verify the map file after compiling your application.
*/
ldr r1, =_bss_end
cmp r0, r1
bge ramsizeok
bl chSysHalt
ramsizeok:
/*
* Data initialization.
* NOTE: It assumes that the DATA size is a multiple of 4.
*/
ldr r1, =_textdata
ldr r2, =_data
ldr r3, =_edata
dataloop:
cmp r2, r3
ldrlo r0, [r1], #4
strlo r0, [r2], #4
blo dataloop
/*
* BSS initialization.
* NOTE: It assumes that the BSS size is a multiple of 4.
*/
mov r0, #0
ldr r1, =_bss_start
ldr r2, =_bss_end
bssloop:
cmp r1, r2
strlo r0, [r1], #4
blo bssloop
/*
* Application-provided HW initialization routine.
*/
bl hwinit
/*
* main(0, NULL).
*/
mov r0, #0
mov r1, #0
bl main
bl chSysHalt

79
demos/LPC214x-GCC/main.c Normal file
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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <ch.h>
#include "lpc214x.h"
#include "lpc214x_serial.h"
#include "buzzer.h"
static BYTE8 waThread1[UserStackSize(16)];
static t_msg Thread1(void *arg) {
while (TRUE) {
IO0CLR = 0x00000800;
chThdSleep(200);
IO0SET = 0x00000C00;
chThdSleep(800);
IO0CLR = 0x00000400;
chThdSleep(200);
IO0SET = 0x00000C00;
chThdSleep(800);
}
return 0;
}
static BYTE8 waThread2[UserStackSize(16)];
static t_msg Thread2(void *arg) {
while (TRUE) {
IO0CLR = 0x80000000;
chThdSleep(200);
IO0SET = 0x80000000;
chThdSleep(300);
}
return 0;
}
static BYTE8 waThread3[UserStackSize(16)];
static t_msg Thread3(void *arg) {
while (TRUE) {
if (!(IO0PIN & 0x00008000)) // Button 1
PlaySound(1000, 100);
if (!(IO0PIN & 0x00010000)) // Button 2
chFDDWrite(&COM1, (BYTE8 *)"Hello World!\r\n", 14);
chThdSleep(500);
}
return 0;
}
int main(int argc, char **argv) {
chSysInit();
chThdCreate(NORMALPRIO + 1, 0, waThread1, sizeof(waThread1), Thread1, NULL);
chThdCreate(NORMALPRIO + 1, 0, waThread2, sizeof(waThread2), Thread2, NULL);
chThdCreate(NORMALPRIO + 1, 0, waThread3, sizeof(waThread3), Thread3, NULL);
chSysPause();
return 0;
}

156
demos/LPC214x-GCC/makefile Normal file
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#
# !!!! Do NOT edit this makefile with an editor which replace tabs by spaces !!!!
#
##############################################################################################
#
# On command line:
#
# make all = Create project
#
# make clean = Clean project files.
#
# To rebuild project do "make clean" and "make all".
#
##############################################################################################
# Start of default section
#
TRGT = arm-elf-
CC = $(TRGT)gcc
CP = $(TRGT)objcopy
AS = $(TRGT)gcc -x assembler-with-cpp
OD = $(TRGT)objdump
HEX = $(CP) -O ihex
BIN = $(CP) -O binary
MCU = arm7tdmi
# List all default C defines here, like -D_DEBUG=1
DDEFS =
# List all default ASM defines here, like -D_DEBUG=1
DADEFS =
# List all default directories to look for include files here
DINCDIR =
# List the default directory to look for the libraries here
DLIBDIR =
# List all default libraries here
DLIBS =
#
# End of default section
##############################################################################################
##############################################################################################
# Start of user section
#
# Define project name here
PROJECT = ch
# Define linker script file here
LDSCRIPT= ch.ld
# List all user C define here, like -D_DEBUG=1
UDEFS =
# Define ASM defines here
UADEFS =
# List C source files here
SRC = chcore.c buzzer.c main.c \
../../ports/ARM7-LPC214x/GCC/lpc214x_serial.c \
../../src/chinit.c ../../src/chdelta.c ../../src/chschd.c ../../src/chthreads.c \
../../src/chsem.c ../../src/chevents.c ../../src/chmsg.c ../../src/chsleep.c \
../../src/chqueues.c ../../src/chserial.c
# List ASM source files here
ASRC = crt0.s chcore2.s
# List all user directories here
UINCDIR = ../../src/include ../../ports/ARM7-LPC214x/GCC
# List the user directory to look for the libraries here
ULIBDIR =
# List all user libraries here
ULIBS =
# Define optimisation level here
# NOTE: -mthumb-interwork increases the code size, remove it if you don't really need it.
# NOTE: -ffixed-f7 is only needed if you enabled CH_CURRP_REGISTER_CACHE in chconf.h.
#OPT = -Os -ggdb -fomit-frame-pointer -fno-strict-aliasing
#OPT = -O0 -ggdb -fomit-frame-pointer -fno-strict-aliasing
OPT = -O2 -ggdb -fomit-frame-pointer -fno-strict-aliasing
# Define warning options here
WARN = -Wall -Wstrict-prototypes
#
# End of user defines
##############################################################################################
INCDIR = $(patsubst %,-I%,$(DINCDIR) $(UINCDIR))
LIBDIR = $(patsubst %,-L%,$(DLIBDIR) $(ULIBDIR))
DEFS = $(DDEFS) $(UDEFS)
ADEFS = $(DADEFS) $(UADEFS)
OBJS = $(ASRC:.s=.o) $(SRC:.c=.o)
LIBS = $(DLIBS) $(ULIBS)
MCFLAGS = -mcpu=$(MCU)
#ASFLAGS = $(MCFLAGS) -Wa,-amhls=$(<:.s=.lst) $(ADEFS)
ASFLAGS = $(MCFLAGS) -Wa,-amhls=$(<:.s=.lst) $(ADEFS)
CPFLAGS = $(MCFLAGS) $(OPT) $(WARN) -fverbose-asm -Wa,-ahlms=$(<:.c=.lst) $(DEFS)
LDFLAGS = $(MCFLAGS) -nostartfiles -T$(LDSCRIPT) -Wl,-Map=$(PROJECT).map,--cref,--no-warn-mismatch $(LIBDIR)
ODFLAGS = -x --syms
# Generate dependency information
CPFLAGS += -MD -MP -MF .dep/$(@F).d
#
# makefile rules
#
all: $(OBJS) $(PROJECT).elf $(PROJECT).hex $(PROJECT).bin $(PROJECT).dmp
%o : %c
$(CC) -c $(CPFLAGS) -I . $(INCDIR) $< -o $@
%o : %s
$(AS) -c $(ASFLAGS) $< -o $@
%elf: $(OBJS)
$(CC) $(OBJS) $(LDFLAGS) $(LIBS) -o $@
%hex: %elf
$(HEX) $< $@
%bin: %elf
$(BIN) $< $@
%dmp: %elf
$(OD) $(ODFLAGS) $< > $@
clean:
-rm -f $(OBJS)
-rm -f $(PROJECT).elf
-rm -f $(PROJECT).dmp
-rm -f $(PROJECT).map
-rm -f $(PROJECT).hex
-rm -f $(PROJECT).bin
-rm -f $(SRC:.c=.c.bak)
-rm -f $(SRC:.c=.lst)
-rm -f $(ASRC:.s=.s.bak)
-rm -f $(ASRC:.s=.lst)
-rm -fR .dep
#
# Include the dependency files, should be the last of the makefile
#
-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
# *** EOF ***