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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@69 35acf78f-673a-0410-8e92-d51de3d6d3f4

This commit is contained in:
gdisirio 2007-10-30 10:46:57 +00:00
parent 5eeed3ddb5
commit 35dea10cc7
7 changed files with 202 additions and 0 deletions
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1
demos/ARM7-LPC214x-GCC/Makefile
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@ -64,6 +64,7 @@ UADEFS =
# List ARM-mode C source files here
ASRC = chcore.c main.c buzzer.c ../../src/lib/evtimer.c ../../test/test.c \
../../ports/ARM7-LPC214x/GCC/vic.c ../../ports/ARM7-LPC214x/GCC/lpc214x_serial.c \
../../ports/ARM7-LPC214x/GCC/lpc214x_ssp.c \
../../src/chinit.c ../../src/chlists.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

3
demos/ARM7-LPC214x-GCC/chcore.c
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@ -22,6 +22,7 @@
#include "lpc214x.h"
#include "vic.h"
#include "lpc214x_serial.h"
#include "lpc214x_ssp.h"
#include "buzzer.h"
@ -117,6 +118,7 @@ void hwinit(void) {
SetVICVector(T0IrqHandler, 0, SOURCE_Timer0);
SetVICVector(UART0IrqHandler, 1, SOURCE_UART0);
SetVICVector(UART1IrqHandler, 2, SOURCE_UART1);
SetVICVector(SSPIrqHandler, 3, SOURCE_SPI1);
/*
* System Timer initialization, 1ms intervals.
@ -133,6 +135,7 @@ void hwinit(void) {
* Other subsystems.
*/
InitSerial();
InitSSP();
InitBuzzer();
}

10
demos/ARM7-LPC214x-GCC/chcore2.s
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@ -155,6 +155,16 @@ UART1IrqHandler:
bl UART1Irq
b IrqCommon
.globl SSPIrqHandler
SSPIrqHandler:
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 SSPIrq
b IrqCommon
/*
* Common exit point for all IRQ routines, it performs the rescheduling if
* required.

75
ports/ARM7-LPC214x/GCC/lpc214x.h
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@ -337,6 +337,81 @@ typedef struct {
#define TER_ENABLE 0x80
/*
* SSP.
*/
typedef struct {
IOREG32 SSP_CR0;
IOREG32 SSP_CR1;
IOREG32 SSP_DR;
IOREG32 SSP_SR;
IOREG32 SSP_CPSR;
IOREG32 SSP_IMSC;
IOREG32 SSP_RIS;
IOREG32 SSP_MIS;
IOREG32 SSP_ICR;
} SSP;
#define SSPBase ((SSP *)0xE0068000)
#define SSPCR0 (SSPBase->SSP_CR0)
#define SSPCR1 (SSPBase->SSP_CR1)
#define SSPDR (SSPBase->SSP_DR)
#define SSPSR (SSPBase->SSP_SR)
#define SSPCPSR (SSPBase->SSP_CPSR)
#define SSPIMSC (SSPBase->SSP_IMSC)
#define SSPRIS (SSPBase->SSP_RIS)
#define SSPMIS (SSPBase->SSP_MIS)
#define SSPICR (SSPBase->SSP_ICR)
#define CR0_DSS4BIT 3
#define CR0_DSS5BIT 4
#define CR0_DSS6BIT 5
#define CR0_DSS7BIT 6
#define CR0_DSS8BIT 7
#define CR0_DSS9BIT 8
#define CR0_DSS10BIT 9
#define CR0_DSS11BIT 0xA
#define CR0_DSS12BIT 0xB
#define CR0_DSS13BIT 0xC
#define CR0_DSS14BIT 0xD
#define CR0_DSS15BIT 0xE
#define CR0_DSS16BIT 0xF
#define CR0_FRFSPI 0
#define CR0_FRFSSI 0x10
#define CR0_FRFMW 0x20
#define CR0_CPOL 0x40
#define CR0_CPHA 0x80
#define CR0_CLOCKRATE(n) ((n) << 8)
#define CR1_LBM 1
#define CR1_SSE 2
#define CR1_MS 4
#define CR1_SOD 8
#define SR_TFE 1
#define SR_TNF 2
#define SR_RNE 4
#define SR_RFF 8
#define SR_BSY 0x10
#define IMSC_ROR 1
#define IMSC_RT 2
#define IMSC_RX 4
#define IMSC_TX 8
#define RIS_ROR 1
#define RIS_RT 2
#define RIS_RX 4
#define RIS_TX 8
#define MIS_ROR 1
#define MIS_RT 2
#define MIS_RX 4
#define MIS_TX 8
#define ICR_ROR 1
#define ICR_RT 2
/*
* Timers/Counters.
*/

78
ports/ARM7-LPC214x/GCC/lpc214x_ssp.c Normal file
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@ -0,0 +1,78 @@
/*
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_ssp.h"
static BYTE8 *ip, *op;
static t_size icnt, ocnt;
static t_sspnotify callback;
void SSPIrq(void) {
}
/*
* Starts an asynchronous SSP transfer.
* @param in pointer to the incoming data buffer, if this parameter is set to
* \p NULL then the incoming data is discarded.
* @param out pointer to the outgoing data buffer, if this parameter is set to
* \p NULL then 0xFF bytes will be output.
* @param n the number of bytes to be transferred
* @param fn callback function invoked when the operation is done
* @return \p SSP_OK if the trasfer is started else \p SSP_RUNNING if a
* an operation was already started
*/
t_msg sspRWI(BYTE8 *in, BYTE8 *out, t_size n, t_sspnotify fn) {
if (callback)
return SSP_RUNNING;
callback = fn, ip = in, op = out, icnt = ocnt = n;
SSPIMSC = IMSC_ROR | IMSC_RT | IMSC_RX | IMSC_TX;
return SSP_OK;
}
/*
* SSP setup, must be invoked with interrupts disabled.
* Do not invoke while an operation is in progress.
*/
void SetSSPI(int cpsr, int cr0, int cr1) {
SSP *ssp = SSPBase;
ssp->SSP_CR1 = cr1 & ~CR1_SSE;
ssp->SSP_CR0 = cr0;
ssp->SSP_CPSR = cpsr;
ssp->SSP_CR1 = cr1 | CR1_SSE;
}
/*
* SSP subsystem initialization.
*/
void InitSSP(void) {
/* Enables the SPI1 clock */
PCONP = (PCONP & PCALL) | PCSPI1;
/* Clock = PCLK / 2 */
SetSSPI(2, CR0_DSS8BIT | CR0_FRFSPI | CR0_CLOCKRATE(0), 0);
VICIntEnable = INTMASK(SOURCE_SPI1);
}

32
ports/ARM7-LPC214x/GCC/lpc214x_ssp.h Normal file
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@ -0,0 +1,32 @@
/*
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 _LPC214x_SSP_H_
#define _LPC214x_SSP_H_
#define SSP_OK RDY_OK
#define SSP_RUNNING -3
typedef void (*t_sspnotify)(void);
void InitSSP(void);
void SetSSPI(int cpsr, int cr0, int cr1);
void SSPIrqHandler(void);
#endif /* _LPC214x_SSP_H_*/

3
readme.txt
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@ -38,6 +38,9 @@ AVR-AT90CANx-GCC - Port on AVR AT90CAN128, not complete yet.
*** Releases ***
*****************************************************************************
*** 0.3.6 ***
- Added SSP (SPI1) definitions to the lpc214x.h file.
*** 0.3.5 ***
- Space optimization in events code.
- Changed the behavior of chEvtWaitTimeout() when the timeout parameter is