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Commit 6c0c1325 authored by Rafal Babski's avatar Rafal Babski
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New driver linux_serial_minimal 

Communication with MSP430 via UART
parent 52e539f6
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include/drivers/Makefile.am
View file @ 6c0c1325
......@@ -19,6 +19,7 @@ EXTRA_DIST = $(srcdir)/po_hi_driver_linux_serial.h \
$(srcdir)/po_hi_driver_keyboard.h \
$(srcdir)/po_hi_rtems_utils.h $(srcdir)/grspw_api.h \
$(srcdir)/grspw_pkt_lib.h \
$(srcdir)/linux_serial_minimal.h \
$(srcdir)/po_hi_driver_drvmgr_common.h \
$(srcdir)/star_dundee_api.h
......
include/drivers/linux_serial_minimal.h 0 → 100644
View file @ 6c0c1325
/*
* This is a part of PolyORB-HI-C distribution, a minimal
* middleware written for generated code from AADL models.
* You should use it with the Ocarina toolsuite.
*
* For more informations, please visit http://taste.tuxfamily.org/wiki
*
* Copyright (C) 2010-2014 ESA & ISAE.
*/
#include <deployment.h>
#ifndef __PO_HI_DRIVER_LINUX_SERIAL_MINIMAL_H__
#define __PO_HI_DRIVER_LINUX_SERIAL_MINIMAL_H__
#if defined __PO_HI_NEED_DRIVER_LINUX_SERIAL_MINIMAL
void __po_hi_c_driver_linux_serial_minimal_poller (const __po_hi_device_id dev_id);
void __po_hi_c_driver_linux_serial_minimal_init (__po_hi_device_id id);
int __po_hi_c_driver_linux_serial_minimal_sender (__po_hi_task_id task, __po_hi_port_t port);
#endif
#endif
src/drivers/Makefile.am
View file @ 6c0c1325
......@@ -22,6 +22,7 @@ C_FILES = $(srcdir)/po_hi_driver_linux_serial.c \
$(srcdir)/po_hi_driver_rasta_1553_brmlib.c \
$(srcdir)/po_hi_driver_rasta_serial.c \
$(srcdir)/grspw_api.c $(srcdir)/grspw_pkt_lib.c \
$(srcdir)/linux_serial_minimal.c \
$(srcdir)/config.c $(srcdir)/config_leon3_drvmgr.c \
$(srcdir)/spwrouter_custom_config.c \
$(srcdir)/po_hi_driver_drvmgr_common.c \
......
src/drivers/linux_serial_minimal.c 0 → 100644
View file @ 6c0c1325
#include <drivers/linux_serial_minimal.h>
#include <drivers/configuration/serial.h>
#if defined __PO_HI_NEED_DRIVER_LINUX_SERIAL_MINIMAL
#include <po_hi_debug.h>
#include <po_hi_returns.h>
#include <po_hi_utils.h>
#include <po_hi_messages.h>
#include <po_hi_transport.h>
#include <po_hi_gqueue.h>
#include <po_hi_protected.h>
#include <drivers/po_hi_driver_serial_common.h>
/* po-hi-c related files */
#include <activity.h>
#include <marshallers.h>
#include <deployment.h>
/* generated files */
#include <linux/ioctl.h>
#include <termios.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
/* Linux-specific files */
static void show_data(const uint8_t* data, size_t length)
{
printf("Data: %ul bytes: hex [", length);
size_t i;
for(i = 0; i < length; ++i)
{
printf("%02ul ", (unsigned int)(data[i]));
}
printf("]\n");
}
/* Set parity bits in struct termios according to configuration.
* If the configuration does not exist, then parity is disabled.
*/
static void setup_parity_bits(struct termios* tty, __po_hi_c_serial_conf_t* serialconf)
{
if(serialconf->exist.parity && serialconf->exist.use_paritybit)
{
if(serialconf->use_paritybit)
{
if(serialconf->parity == __po_hi_c_odd)
{
printf("Setting parity odd\n");
tty->c_cflag |= PARODD;
}
else
{
printf("Setting parity even\n");
tty->c_cflag &= ~PARODD;
}
tty->c_cflag |= PARENB;
}
else
{
printf("Setting parity disabled\n");
tty->c_cflag &= ~PARENB; // shut off parity
}
}
else
{
printf("Setting parity disabled\n");
tty->c_cflag &= ~PARENB;
}
}
/* Set character size in struct termios according to configuration.
* If the configuration does not exist, then character with is 8 bits.
*/
static void setup_bit_size(struct termios* tty, __po_hi_c_serial_conf_t* serialconf)
{
if(serialconf->exist.bits)
{
switch(serialconf->bits)
{
case 5:
printf("Setting bit 5\n");
tty->c_cflag |= CS5;
break;
case 6:
printf("Setting bit 6\n");
tty->c_cflag |= CS6;
break;
case 7:
printf("Setting bit 7\n");
tty->c_cflag |= CS7;
break;
case 8:
printf("Setting bit 8\n");
tty->c_cflag |= CS8;
break;
default:
printf("Setting bit 8\n");
tty->c_cflag |= CS8;
break;
}
}
else
{
tty->c_cflag |= CS8;
}
}
/* Setup UART configuration.
*/
static void setup_termios(struct termios* tty, __po_hi_device_id id)
{
__po_hi_c_serial_conf_t* serialconf = (__po_hi_c_serial_conf_t*)__po_hi_get_device_configuration(id);
tty->c_cflag |= CREAD ;
tty->c_iflag = IGNPAR | IGNBRK;
tty->c_cc[VMIN]=1;
tty->c_cc[VTIME]=0;
setup_parity_bits(tty, serialconf);
setup_bit_size(tty, serialconf);
tty->c_cflag &= ~CSTOPB;
tty->c_cflag &= ~CRTSCTS;
tty->c_lflag &= ~ICANON;
tty->c_lflag &= ~ECHOE;
tty->c_lflag &= ~ECHO;
tty->c_lflag &= ~ECHONL;
tty->c_lflag &= ~ISIG;
tty->c_iflag &= ~(IXON | IXOFF | IXANY);
tty->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL);
tty->c_oflag &= ~OPOST;
tty->c_oflag &= ~ONLCR;
tty->c_cflag &= ~OFILL;
if(serialconf->exist.speed)
{
switch (serialconf->speed)
{
case __po_hi_c_b9600:
cfsetospeed(tty, B9600);
cfsetispeed(tty, B9600);
__PO_HI_DEBUG_DEBUG ("[LINUX SERIAL] Set speed to 19200\n");
break;
case __po_hi_c_b19200:
cfsetospeed(tty, B19200);
cfsetispeed(tty, B19200);
__PO_HI_DEBUG_DEBUG ("[LINUX SERIAL] Set speed to 19200\n");
break;
case __po_hi_c_b38400:
cfsetospeed(tty, B38400);
cfsetispeed(tty, B38400);
__PO_HI_DEBUG_DEBUG ("[LINUX SERIAL] Set speed to 38400\n");
break;
case __po_hi_c_b57600:
cfsetospeed(tty, B57600);
cfsetispeed(tty, B57600);
__PO_HI_DEBUG_DEBUG ("[LINUX SERIAL] Set speed to 57600\n");
break;
case __po_hi_c_b115200:
cfsetospeed(tty, B115200);
cfsetispeed(tty, B115200);
__PO_HI_DEBUG_DEBUG ("[LINUX SERIAL] Set speed to 115200\n");
break;
case __po_hi_c_b230400:
cfsetospeed(tty, B230400);
cfsetispeed(tty, B230400);
__PO_HI_DEBUG_DEBUG ("[LINUX SERIAL] Set speed to 115200\n");
break;
}
}
else
{
cfsetospeed(tty, B9600);
cfsetispeed(tty, B9600);
__PO_HI_DEBUG_DEBUG ("[LINUX SERIAL] Set speed to 9600\n");
}
}
#define PACKET_START_BYTE '\x02'
#define PACKET_STOP_BYTE '\x03'
#define PACKET_ESCAPE_BYTE '\x1B'
static int encode_packet(uint8_t* data, const uint8_t* msg_content, const int msg_length)
{
if(msg_length <= 8)
{
printf("Encoding packet Not enaugh msg_length, %d\n", msg_length);
// the message is empty
return 0;
}
// first four bytes of msg_content - port
uint8_t* data_ptr = (uint8_t*) (msg_content + 4); // skip port to access data
// last four bytes of msg_content - actual msg length
uint32_t* length_ptr = (uint32_t*)(msg_content + (msg_length - 4));
printf("Encoding packet, msg_length=%d\n", msg_length);
printf("Actual length = %ul\n", *length_ptr);
int length = 0;
data[length++] = PACKET_START_BYTE;
uint32_t iter;
for(iter = 0; iter < *length_ptr; ++iter)
{
uint8_t msg_byte = data_ptr[iter];
if(msg_byte == PACKET_START_BYTE || msg_byte == PACKET_STOP_BYTE || msg_byte == PACKET_ESCAPE_BYTE)
{
data[length++] = PACKET_ESCAPE_BYTE;
}
data[length++]= msg_byte;
}
data[length++] = PACKET_STOP_BYTE;
printf("Result packet length %d\n", length);
return length;
}
int po_hi_c_driver_serial_fd_read;
int po_hi_c_driver_serial_fd_write;
uint32_t po_hi_c_driver_serial_sending_wait;
__po_hi_request_t __po_hi_c_driver_linux_serial_minimal_request;
__po_hi_mutex_t __po_hi_c_driver_linux_serial_minimal_send_mutex;
void __po_hi_c_driver_linux_serial_minimal_init_receiver (__po_hi_device_id id)
{
struct termios oldtio,newtio;
__po_hi_c_serial_conf_t* serialconf;
__PO_HI_DEBUG_INFO ("[LINUX SERIAL] Init receiver\n");
serialconf = (__po_hi_c_serial_conf_t*)__po_hi_get_device_configuration (id);
if (serialconf == NULL)
{
__PO_HI_DEBUG_INFO ("[LINUX SERIAL] Cannot get the name of the device !\n");
return;
}
po_hi_c_driver_serial_fd_read = open (serialconf->devname, O_RDONLY | O_NOCTTY);
if (po_hi_c_driver_serial_fd_read < 0)
{
__PO_HI_DEBUG_DEBUG ("[LINUX SERIAL] Error while opening device %s\n", serialconf->devname);
}
else
{
__PO_HI_DEBUG_DEBUG ("[LINUX SERIAL] Device %s successfully opened for reading, fd=%d\n", serialconf->devname , po_hi_c_driver_serial_fd_read);
}
tcgetattr (po_hi_c_driver_serial_fd_read, &oldtio); /* save current serial port settings */
tcgetattr (po_hi_c_driver_serial_fd_read, &newtio); /* save current serial port settings */
setup_termios(&newtio, id);
if (tcflush (po_hi_c_driver_serial_fd_read, TCIOFLUSH) < 0)
{
__PO_HI_DEBUG_CRITICAL ("[LINUX SERIAL] Error in tcflush()\n");
}
if (tcsetattr (po_hi_c_driver_serial_fd_read, TCSANOW, &newtio) < 0)
{
__PO_HI_DEBUG_CRITICAL ("[LINUX SERIAL] Error in tcsetattr()\n");
}
__PO_HI_DEBUG_INFO ("[LINUX SERIAL] End of receiver init\n");
}
void __po_hi_c_driver_linux_serial_minimal_init_sender (__po_hi_device_id id)
{
struct termios oldtio,newtio;
__po_hi_c_serial_conf_t* serialconf;
po_hi_c_driver_serial_sending_wait = 0;
__PO_HI_DEBUG_INFO ("[LINUX SERIAL] Init sender\n");
__po_hi_mutex_init (&__po_hi_c_driver_linux_serial_minimal_send_mutex,__PO_HI_MUTEX_REGULAR, 0);
__po_hi_transport_set_sending_func (id, __po_hi_c_driver_linux_serial_minimal_sender);
serialconf = (__po_hi_c_serial_conf_t*)__po_hi_get_device_configuration (id);
if (serialconf == NULL)
{
__PO_HI_DEBUG_INFO ("[LINUX SERIAL] Cannot get the configuration of the device !\n");
return;
}
if (serialconf->exist.sending_wait == 1)
{
po_hi_c_driver_serial_sending_wait = (uint32_t) serialconf->sending_wait;
__PO_HI_DEBUG_INFO ("[LINUX SERIAL] Set sending delay to %u!\n",po_hi_c_driver_serial_sending_wait);
}
po_hi_c_driver_serial_fd_write = open (serialconf->devname, O_WRONLY | O_NOCTTY | O_NDELAY);
if (po_hi_c_driver_serial_fd_write < 0)
{
__PO_HI_DEBUG_CRITICAL ("[LINUX SERIAL] Error while opening device %s\n", serialconf->devname);
}
else
{
__PO_HI_DEBUG_DEBUG ("[LINUX SERIAL] Device %s successfully opened for sending, fd=%d\n", serialconf->devname, po_hi_c_driver_serial_fd_write);
}
tcgetattr (po_hi_c_driver_serial_fd_write, &oldtio); /* save current serial port settings */
tcgetattr (po_hi_c_driver_serial_fd_write, &newtio); /* save current serial port settings */
setup_termios(&newtio, id);
/*
* clean the serial line and activate the settings for the port
*/
if (tcflush (po_hi_c_driver_serial_fd_write, TCIOFLUSH) == -1)
{
__PO_HI_DEBUG_CRITICAL ("[LINUX SERIAL] Error in tcflush()\n");
}
if (tcsetattr (po_hi_c_driver_serial_fd_write, TCSANOW, &newtio) == -1)
{
__PO_HI_DEBUG_CRITICAL ("[LINUX SERIAL] Error in tcsetattr()\n");
}
__PO_HI_DEBUG_INFO ("[LINUX SERIAL] End of sender init\n");
}
void __po_hi_c_driver_linux_serial_minimal_init (__po_hi_device_id id)
{
__po_hi_c_driver_linux_serial_minimal_init_receiver (id);
__po_hi_c_driver_linux_serial_minimal_init_sender (id);
return;
}
#define PACKET_DECODER_BUFFER_SIZE 100
enum PACKET_DECODER_STATE
{
WAITING_FOR_START_BYTE,
RECEIVING_MESSAGE,
ESCAPE_STARTED
};
static uint8_t packet_decoder_buffer[PACKET_DECODER_BUFFER_SIZE];
static int packet_decoder_index = 0;
static enum PACKET_DECODER_STATE packet_decoder_state;
static void process_packet(uint8_t* data, int size)
{
__PO_HI_DEBUG_CRITICAL ("[LINUX SERIAL] Processing packet\n");
__po_hi_c_driver_linux_serial_minimal_request.port = (__po_hi_local_port_t) 7;
__PO_HI_DEBUG_CRITICAL ("[LINUX SERIAL] Copying data (%d bytes)\n", size);
memcpy(&__po_hi_c_driver_linux_serial_minimal_request.vars, data, size);
uint8_t* request_size_pointer = ((uint8_t*)&__po_hi_c_driver_linux_serial_minimal_request.vars) + size;
__PO_HI_DEBUG_CRITICAL ("[LINUX SERIAL] Copying size (%d bytes)\n", size);
memcpy(request_size_pointer, &size, 4);
__PO_HI_DEBUG_CRITICAL ("[LINUX SERIAL] Packet deliver\n", size);
__po_hi_main_deliver(&__po_hi_c_driver_linux_serial_minimal_request);
}
static int process_character(uint8_t c)
{
__PO_HI_DEBUG_CRITICAL ("[LINUX SERIAL] Processing character\n");
int result = 0;
switch(packet_decoder_state)
{
case WAITING_FOR_START_BYTE:
if(c == PACKET_START_BYTE)
{
packet_decoder_index = 0;
packet_decoder_state = RECEIVING_MESSAGE;
}
break;
case RECEIVING_MESSAGE:
if(c == PACKET_START_BYTE)
{
packet_decoder_index = 0;
packet_decoder_state = RECEIVING_MESSAGE;
}
else if(c == PACKET_STOP_BYTE)
{
process_packet(packet_decoder_buffer, packet_decoder_index);
result = 1;
packet_decoder_state = WAITING_FOR_START_BYTE;
}
else if(c == PACKET_ESCAPE_BYTE)
{
packet_decoder_state = ESCAPE_STARTED;
}
else
{
packet_decoder_buffer[packet_decoder_index] = c;
++packet_decoder_index;
}
break;
case ESCAPE_STARTED:
packet_decoder_buffer[packet_decoder_index] = c;
packet_decoder_state = RECEIVING_MESSAGE;
break;
};
return result;
}
void __po_hi_c_driver_linux_serial_minimal_poller (const __po_hi_device_id dev_id)
{
(void) dev_id;
uint8_t local_buffer[1];
while(1)
{
if (read (po_hi_c_driver_serial_fd_read, local_buffer, 1) == 1)
{
__PO_HI_DEBUG_CRITICAL ("[LINUX SERIAL] Received one character %02x !\n", (unsigned int) local_buffer[0] );
if(process_character(local_buffer[0]))
{
break;
}
}
else
{
__PO_HI_DEBUG_CRITICAL ("[LINUX SERIAL] Cannot read !\n");
return;
}
}
}
__po_hi_msg_t __po_hi_c_driver_linux_serial_minimal_sender_msg;
int __po_hi_c_driver_linux_serial_minimal_sender (__po_hi_task_id task_id, __po_hi_port_t port)
{
int n;
__po_hi_local_port_t local_port;
__po_hi_request_t* request;
__po_hi_port_t destination_port;
local_port = __po_hi_get_local_port_from_global_port (port);
request = __po_hi_gqueue_get_most_recent_value (task_id, local_port);
if (request->port == -1)
{
__PO_HI_DEBUG_DEBUG("[LINUX SERIAL] Send output task %d, port %d (local_port=%d): no value to send\n", task_id, port, local_port);
return __PO_HI_SUCCESS;
}
destination_port = __po_hi_gqueue_get_destination (task_id, local_port, 0);
__po_hi_mutex_lock (&__po_hi_c_driver_linux_serial_minimal_send_mutex);
__po_hi_msg_reallocate (&__po_hi_c_driver_linux_serial_minimal_sender_msg);
request->port = destination_port;
__po_hi_marshall_request (request, &__po_hi_c_driver_linux_serial_minimal_sender_msg);
int msg_length = __po_hi_msg_length(&__po_hi_c_driver_linux_serial_minimal_sender_msg);
uint8_t* msg_content = (uint8_t*) malloc(msg_length);
__po_hi_msg_get_data(msg_content,
&__po_hi_c_driver_linux_serial_minimal_sender_msg,
0,
msg_length);
uint8_t* data = (uint8_t*)malloc(msg_length * 2 + 1);
int length = encode_packet(data, msg_content, msg_length);
if(length > 0)
{
if (po_hi_c_driver_serial_sending_wait != 0)
{
__PO_HI_DEBUG_CRITICAL (" [LINUX SERIAL] write %d bytes in loop to device\n", length);
show_data(data, length);
for (n = 0 ; n < length ; n++)
{
write (po_hi_c_driver_serial_fd_write, &(data[n]), 1);
usleep (po_hi_c_driver_serial_sending_wait);
fsync(po_hi_c_driver_serial_fd_write);
if (n <= 0)
{
__PO_HI_DEBUG_DEBUG (" [LINUX SERIAL] failed to write !\n");
}
}
}
else
{
__PO_HI_DEBUG_CRITICAL (" [LINUX SERIAL] write %d bytes to device\n", length);
show_data(data, length);
n = write (po_hi_c_driver_serial_fd_write, data, length);
fsync(po_hi_c_driver_serial_fd_write);
if (n < 0)
{
__PO_HI_DEBUG_CRITICAL (" [LINUX SERIAL] failed !\n");
}
else if((0 <= n)&(n < length))
{
__PO_HI_DEBUG_CRITICAL (" [LINUX SERIAL] Unable write - write returned %d !\n", n);
}
else
{
__PO_HI_DEBUG_DEBUG (" [LINUX SERIAL] OK !\n");
}
}
__PO_HI_DEBUG_DEBUG ("[LINUX SERIAL] write() returns %d, message sent: 0x", n);
}
__po_hi_mutex_unlock (&__po_hi_c_driver_linux_serial_minimal_send_mutex);
request->port = __PO_HI_GQUEUE_INVALID_PORT;
free(msg_content);
return 1;
}
#endif
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