timegen_spacewire.c
123 lines
| 4.4 KiB
| text/x-c
|
CLexer
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r107 | /** Functions related to the SpaceWire interface. | ||
* | ||||
* @file | ||||
* @author P. LEROY | ||||
* | ||||
* A group of functions to handle SpaceWire transmissions: | ||||
* - configuration of the SpaceWire link | ||||
* - SpaceWire related interruption requests processing | ||||
* - transmission of TeleMetry packets by a dedicated RTEMS task | ||||
* - reception of TeleCommands by a dedicated RTEMS task | ||||
* | ||||
*/ | ||||
#include "timegen_spacewire.h" | ||||
rtems_name semq_name; | ||||
rtems_id semq_id; | ||||
//*********** | ||||
// RTEMS TASK | ||||
rtems_task spiq_task(rtems_task_argument unused) | ||||
{ | ||||
/** This RTEMS task is awaken by an rtems_event sent by the interruption subroutine of the SpaceWire driver. | ||||
* | ||||
* @param unused is the starting argument of the RTEMS task | ||||
* | ||||
*/ | ||||
rtems_event_set event_out; | ||||
rtems_status_code status; | ||||
int linkStatus; | ||||
BOOT_PRINTF("in SPIQ *** \n") | ||||
while(true){ | ||||
rtems_event_receive(SPW_LINKERR_EVENT, RTEMS_WAIT, RTEMS_NO_TIMEOUT, &event_out); // wait for an SPW_LINKERR_EVENT | ||||
PRINTF("in SPIQ *** got SPW_LINKERR_EVENT\n") | ||||
// [0] SUSPEND RECV AND SEND TASKS | ||||
status = rtems_task_suspend( Task_id[ TASKID_RECV ] ); | ||||
if ( status != RTEMS_SUCCESSFUL ) { | ||||
PRINTF("in SPIQ *** ERR suspending RECV Task\n") | ||||
} | ||||
status = rtems_task_suspend( Task_id[ TASKID_SEND ] ); | ||||
if ( status != RTEMS_SUCCESSFUL ) { | ||||
PRINTF("in SPIQ *** ERR suspending SEND Task\n") | ||||
} | ||||
// [1] CHECK THE LINK | ||||
status = ioctl(fdSPW, SPACEWIRE_IOCTRL_GET_LINK_STATUS, &linkStatus); // get the link status (1) | ||||
if ( linkStatus != 5) { | ||||
PRINTF1("in SPIQ *** linkStatus %d, wait...\n", linkStatus) | ||||
status = rtems_task_wake_after( SY_LFR_DPU_CONNECT_TIMEOUT ); // wait SY_LFR_DPU_CONNECT_TIMEOUT 1000 ms | ||||
} | ||||
// [2] RECHECK THE LINK AFTER SY_LFR_DPU_CONNECT_TIMEOUT | ||||
status = ioctl(fdSPW, SPACEWIRE_IOCTRL_GET_LINK_STATUS, &linkStatus); // get the link status (2) | ||||
if ( linkStatus != 5 ) // [2.a] not in run state, reset the link | ||||
{ | ||||
spacewire_compute_stats_offsets(); | ||||
status = spacewire_reset_link( ); | ||||
} | ||||
else // [2.b] in run state, start the link | ||||
{ | ||||
status = spacewire_stop_start_link( fdSPW ); // start the link | ||||
if ( status != RTEMS_SUCCESSFUL) | ||||
{ | ||||
PRINTF1("in SPIQ *** ERR spacewire_start_link %d\n", status) | ||||
} | ||||
} | ||||
// [3] COMPLETE RECOVERY ACTION AFTER SY_LFR_DPU_CONNECT_ATTEMPTS | ||||
if ( status == RTEMS_SUCCESSFUL ) // [3.a] the link is in run state and has been started successfully | ||||
{ | ||||
status = rtems_task_restart( Task_id[ TASKID_SEND ], 1 ); | ||||
if ( status != RTEMS_SUCCESSFUL ) { | ||||
PRINTF("in SPIQ *** ERR resuming SEND Task\n") | ||||
} | ||||
status = rtems_task_restart( Task_id[ TASKID_RECV ], 1 ); | ||||
if ( status != RTEMS_SUCCESSFUL ) { | ||||
PRINTF("in SPIQ *** ERR resuming RECV Task\n") | ||||
} | ||||
} | ||||
else // [3.b] the link is not in run state, go in STANDBY mode | ||||
{ | ||||
// wake the WTDG task up to wait for the link recovery | ||||
status = rtems_event_send ( Task_id[TASKID_WTDG], RTEMS_EVENT_0 ); | ||||
status = rtems_task_suspend( RTEMS_SELF ); | ||||
} | ||||
} | ||||
} | ||||
void timecode_irq_handler( void *pDev, void *regs, int minor, unsigned int tc ) | ||||
{ | ||||
// rtems_event_send( Task_id[TASKID_DUMB], RTEMS_EVENT_1 ); | ||||
struct grgpio_regs_str *grgpio_regs = (struct grgpio_regs_str *) REGS_ADDR_GRGPIO; | ||||
grgpio_regs->io_port_direction_register = | ||||
grgpio_regs->io_port_direction_register | 0x08; // [0001 1000], 0 = output disabled, 1 = output enabled | ||||
if ( (grgpio_regs->io_port_output_register & 0x08) == 0x08 ) | ||||
{ | ||||
grgpio_regs->io_port_output_register = grgpio_regs->io_port_output_register & 0xf7; | ||||
} | ||||
else | ||||
{ | ||||
grgpio_regs->io_port_output_register = grgpio_regs->io_port_output_register | 0x08; | ||||
} | ||||
} | ||||
rtems_timer_service_routine user_routine( rtems_id timer_id, void *user_data ) | ||||
{ | ||||
int linkStatus; | ||||
rtems_status_code status; | ||||
status = ioctl(fdSPW, SPACEWIRE_IOCTRL_GET_LINK_STATUS, &linkStatus); // get the link status | ||||
if ( linkStatus == 5) { | ||||
PRINTF("in spacewire_reset_link *** link is running\n") | ||||
status = RTEMS_SUCCESSFUL; | ||||
} | ||||
} | ||||