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[New feature] Only use the GPS constellation for power saving

rocketry
Richard Eoin Meadows 2014-10-24 11:19:01 +01:00
rodzic ed9730d18e
commit 7f014b10a4
2 zmienionych plików z 68 dodań i 1 usunięć
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31
firmware/inc/ubx_messages.h
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@ -73,6 +73,26 @@ __PACKED__ struct ubx_cfg_ant {
uint16_t pins;
} payload;
};
/**
* UBX CFG GNSS
*/
__PACKED__ struct ubx_cfg_gnss {
ubx_message_id_t id;
enum ubx_packet_state state;
struct {
uint8_t msgVer;
uint8_t numTrkChHw;
uint8_t numTrkChUse;
uint8_t numConfigBlocks;
struct {
uint8_t gnssID;
uint8_t resTrkCh;
uint8_t maxTrkCh;
uint8_t reserved1;
int32_t flags;
} block[8];
} payload;
};
/**
* UBX CFG NAV5 Navigation Engine Settings
*/
@ -150,6 +170,17 @@ enum {
UBX_PLATFORM_MODEL_AIRBORNE_2G = 7,
UBX_PLATFORM_MODEL_AIRBORNE_4G = 8,
};
/**
* UBX GNSS Systems
*/
enum {
UBX_GNSS_GPS = 0,
UBX_GNSS_SBAS = 1,
UBX_GNSS_GALILEO = 2,
UBX_GNSS_BEIDOU = 3,
UBX_GNSS_QZSS = 5,
UBX_GNSS_GLONASS = 6,
};
/**
* =============================================================================

38
firmware/src/gps.c
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@ -1,5 +1,5 @@
/*
* Functions for the UBLOX 6 GPS
* Functions for the UBLOX 8 GPS
* Copyright (C) 2014 Richard Meadows <richardeoin>
*
* Permission is hereby granted, free of charge, to any person obtaining
@ -69,6 +69,7 @@ uint8_t ubx_irq_buffer[UBX_BUFFER_LEN];
* UBX Messages
*/
volatile struct ubx_cfg_ant ubx_cfg_ant = { .id = (UBX_CFG | (0x13 << 8)) };
volatile struct ubx_cfg_gnss ubx_cfg_gnss = { .id = (UBX_CFG | (0x3E << 8)) };
volatile struct ubx_cfg_nav5 ubx_cfg_nav5 = { .id = (UBX_CFG | (0x24 << 8)) };
volatile struct ubx_cfg_tp5 ubx_cfg_tp5 = { .id = (UBX_CFG | (0x31 << 8)) };
volatile struct ubx_cfg_prt ubx_cfg_prt = { .id = (UBX_CFG | (0x00 << 8)) };
@ -81,6 +82,7 @@ volatile struct ubx_nav_status ubx_nav_status = { .id = (UBX_NAV | (0x03 << 8))
*/
volatile ubx_message_t* const ubx_messages[] = {
(ubx_message_t*)&ubx_cfg_ant,
(ubx_message_t*)&ubx_cfg_gnss,
(ubx_message_t*)&ubx_cfg_nav5,
(ubx_message_t*)&ubx_cfg_tp5,
(ubx_message_t*)&ubx_cfg_prt,
@ -283,6 +285,7 @@ void gps_update()
_ubx_send_message((ubx_message_t*)&ubx_nav_sol, NULL, 0);
_ubx_send_message((ubx_message_t*)&ubx_nav_timeutc, NULL, 0);
_ubx_send_message((ubx_message_t*)&ubx_nav_status, NULL, 0);
_ubx_send_message((ubx_message_t*)&ubx_cfg_gnss, NULL, 0);
}
/**
* Return the latest received messages
@ -341,6 +344,36 @@ void gps_set_timepulse_five(uint32_t frequency)
(uint8_t*)&ubx_cfg_tp5.payload,
sizeof(ubx_cfg_tp5.payload));
}
/**
* Set which GNSS constellations to use
*/
void gps_set_gnss(void)
{
/* Read the current settings */
_ubx_poll((ubx_message_t*)&ubx_cfg_gnss);
switch (ubx_cfg_gnss.payload.msgVer) {
case 0:
/* For each configuration block */
for (uint8_t i = 0; i < ubx_cfg_gnss.payload.numConfigBlocks; i++) {
/* If it's the configuration for something other than GPS */
if (ubx_cfg_gnss.payload.block[i].gnssID != UBX_GNSS_GPS) {
/* Disable this GNSS system */
ubx_cfg_gnss.payload.block[i].flags &= ~0x1;
}
}
break;
default:
break;
}
/* Write the new settings */
_ubx_send_message((ubx_message_t*)&ubx_cfg_gnss,
(uint8_t*)&ubx_cfg_gnss.payload,
4 + (8 * ubx_cfg_gnss.payload.numConfigBlocks));
}
/**
* Init
@ -386,6 +419,9 @@ void gps_init(void)
/* Set the platform model */
gps_set_platform_model();
/* Set which GNSS constellation we'd like to use */
gps_set_gnss();
/* Set the timepulse */
gps_set_timepulse_five(GPS_TIMEPULSE_FREQ);
}