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gimbal.cpp
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/* Manage the gimbal/rotator GUI and communicate with the Auxiliary Rotator Control module.
*
* We first watch for UDP multicast on 239.9.8.7:7625 from ARC. Once we know its IP and port we make a TCP
* connection for rotator control. This repeats if we ever loose contact. See ARC for protocol details.
*
* If only 1 axis is found we rotate it to point at DX. With 2 axes, we use both to track satellites.
* TODO: somebody may want to track sat az with their yagi?
*
* Some gimbals can move 0-180 in elevation. If so, satellites that pass through north are tracked
* "upside down" to avoid unwrapping az through north. Gimbals without this capability will incure
* a lengthy unwrap if the sat moves through north.
*
* To be on the safe side, all motion is stopped unless the Gimbal plot pane is visible. If decide later to
* leave it run note earthsat.cpp turns off tracking any time a new sat might be selected.
*/
#include "HamClock.h"
// uncomment the #define to get additional performance information
// #define WANT__TRACE_IO
#if defined(WANT__TRACE_IO)
#define _TRACE_IO(x) Serial.printf x
#else
#define _TRACE_IO(x) do{}while(0)
#endif
// listen for UDP multicast from ARC to get server host address then connect with TCP socket
static WiFiClient arc_client; // TCP ARC connection
#define MC_IPA 239 // multicast ip address octet 1
#define MC_IPB 9 // multicast ip address octet 2
#define MC_IPC 8 // multicast ip address octet 3
#define MC_IPD 7 // multicast ip address octet 4
#define MC_PORT 7625 // multicast port
#define MIN_MC_TRY 10 // n times to try minimally listening for multicast
#define MAX_MC_TRY 20 // n times to try hard listening for multicast
#define MC_TRY_PERIOD 100 // time between trys, ms
#define MAX_SNDRETRY 3 // n times to retry sending command
// GUI configuration
#define CHAR_H 25 // large character height
#define TITLE_Y (plot3_b.y+PLOT3_H/5-2) // title y coord, match VOCAP
#define VERSION_Y (TITLE_Y+3) // version y coord
#define VALU_INDENT 40 // az or el value indent
#define STATE_INDENT 98 // az or el state indent
#define DIRBOX_SZ 11 // direction control box size
#define DIRBOX_GAP 2 // gap between control box pairs
#define AUTO_Y (plot3_b.y+PLOT3_H-CHAR_H-15) // auto button y coord
#define ARROW_COLOR RA8875_CYAN // color for directional arrow controls
#define UPOVER_COLOR RA8875_RED // upover symbol color
#define UPDATE_MS 950 // command update interval, ms
#define AZSTEP az_deadband // small az manual step size
#define AZSTEP2 20 // large az manual step size
#define ELSTEP el_deadband // small el manual step size
#define ELSTEP2 10 // large el manual step size
#define MSG_DWELL 5000 // error message display period, ms
// possible axis states
typedef enum {
AZS_UNKNOWN, // unknown
AZS_STOPPED, // stopped
AZS_CWROT, // rotating cw as seen from above
AZS_CCWROT, // rotating ccw "
AZS_CCWLIMIT, // at minimum rotation limit
AZS_CWLIMIT, // at maximum rotation limit
AZS_INPOS, // at commanded az
AZS_NONE, // no az axis
} AzState;
typedef enum {
ELS_UNKNOWN, // unknown
ELS_STOPPED, // stopped
ELS_UPROT, // el angle increasing
ELS_DOWNROT, // el angle decreasing
ELS_UPLIMIT, // at minimum rotation angle
ELS_DOWNLIMIT, // at maximum rotation angle
ELS_INPOS, // at commanded el
ELS_NONE, // no el axis
} ElState;
typedef enum {
AR_LEFT,
AR_DOWN,
AR_UP,
AR_RIGHT
} ArrowDir;
// controls and state
static uint16_t AZ_Y, EL_Y; // drawing locations
static SBox azccw_b, azcw_b, azccw2_b, azcw2_b; // manual az ccw and cw buttons
static SBox elup_b, eldown_b, elup2_b, eldown2_b; // manual el up and down buttons
static SBox auto_b; // tracking button
static SBox stop_b; // stop button
static bool auto_track; // whether we track a target, else only manual input
static bool sat_upover; // whether using el > 90 to avoid wrapping thru N
static bool upover_pending; // avoid sat el near SAT_MIN_EL
static bool user_stop; // user has commanded stop
static float az_target, el_target; // target now, degrees
static float az_now, el_now; // gimbal now, degrees
static float az_deadband; // max az error ignored
static float az_mnt0; // az of mount fully CCW
static float el_min, el_max; // el command limits
static float el_deadband; // max el error ignored
static AzState az_state; // az run state now
static ElState el_state; // el run state now
static int16_t paz_target, pel_target; // previous az and el target, degrees
static int16_t paz_now, pel_now; // previous gimbal az and el, degrees
static AzState paz_state; // previous az run state
static ElState pel_state; // previous el run state
static char title[14]; // title from model
static char version[10]; // version from model
static bool send_now; // whether to send current time
// misc forward declarations
static bool doARCMessage (char *resp, int maxresp_l, const char *msgfmt, ...);
static bool getARCFloat (const char *msg, float *valp);
static bool getAz(void);
static bool getEl(void);
/* return whether the clock is providing correct time
*/
static bool goodTime()
{
return (utcOffset() == 0 && clockTimeOk());
}
/* return whether are currently connected to ARC server
*/
static bool ARCIsConnected()
{
return (arc_client);
}
/* insure disconnected from ARC server
*/
void closeGimbal()
{
if (ARCIsConnected()) {
Serial.printf ("ARC: %lu disconnecting\n", now());
arc_client.stop();
}
}
/* return whether arc_client is successfully connected to ARC.
* if not, listen at most ntry times for its multicast then try to connect.
*/
static bool connectARCOk(uint8_t ntry)
{
// success if already connected
if (ARCIsConnected())
return (true);
// pointless going further if no wifi
if (!wifiOk())
return (false);
_TRACE_IO (("ARC: %lu starting connection attempt\n", now()));
// multicast
WiFiUDP arc_mc;
// check several times for ARC multicast, connect if found
uint8_t t;
for (t = 0; t < ntry; t++) {
// insure we can listen for multicast, else give up
if (!arc_mc && !arc_mc.beginMulticast(WiFi.localIP(),IPAddress(MC_IPA,MC_IPB,MC_IPC,MC_IPD),MC_PORT)){
Serial.println (F("ARC: multicast listen fail"));
return (false);
}
_TRACE_IO (("ARC: %lu try %d checking for mc packet\n", now(), t));
if (arc_mc.parsePacket()) {
_TRACE_IO (("ARC: %lu found mc\n", now()));
// read packet, extract port
char msg[128];
uint16_t msgl = arc_mc.read ((uint8_t*)msg, sizeof(msg)-1);
IPAddress rip = arc_mc.remoteIP();
msg[msgl] = '\0';
int port;
if (msgl < 6 || sscanf (msg, "port %d", &port) != 1) {
Serial.printf("ARC: bad multicast message: %s", msg);
continue;
}
Serial.printf ("ARC: %lu found server at %u.%u.%u.%u:%d\n",
now(), rip[0], rip[1], rip[2], rip[3], port);
// ready to connect but first close udp connection so two are not open together
arc_mc.stop();
// connect to arc server
if (arc_client.connect (rip, port)) {
_TRACE_IO (("ARC: %lu connected to server\n", now()));
// disable Nagle for immediate transmission
arc_client.setNoDelay(true);
// start
char buf[150];
if (!doARCMessage (buf, sizeof(buf), "start")) {
closeGimbal();
continue;
}
if (strncmp (buf, "OK ", 3)) {
Serial.printf ("ARC: %s\n", buf);
plotMessage (plot3_b, RA8875_RED, buf);
wdDelay(MSG_DWELL);
closeGimbal();
break;
}
// get model
if (!doARCMessage (buf, sizeof(buf), "get model")) {
closeGimbal();
continue;
}
if (strncmp (buf, "OK ", 3)) {
Serial.printf ("ARC: %s\n", buf);
plotMessage (plot3_b, RA8875_RED, buf);
wdDelay(MSG_DWELL);
closeGimbal();
break;
}
// save model as title
strncpy (title, buf+9, sizeof(title)-1);
// get version
float v;
if (!getARCFloat ("get version", &v)) {
closeGimbal();
continue;
}
sprintf (version, "Ver %.2f", v);
// init axes and hold here, just probe for optionl El, not fatal if it errors
if (!getAz()) {
// already posted error
wdDelay(MSG_DWELL);
closeGimbal();
break;
}
(void) getEl();
stopGimbalNow();
// friendly show az_mnt0
displaySatInfo();
// send fresh time next opportunity
send_now = true;
// made it!
return (true);
}
}
wdDelay (MC_TRY_PERIOD);
}
// fail or not ready
if (t < ntry)
Serial.println (F("ARC: server not ready"));
else
Serial.println (F("ARC: no server found"));
arc_mc.stop();
return (false);
}
/* send the given rotator command string and return complete response.
* return true if io ok, else log reason, close arc_client and return false.
* eg: get model -> OK model Yaesu G5500
* N.B. msg shall NOT include \n
* N.B. return bool just reflects whether proper io occured, not whether response started with OK
*/
static bool doARCMessage (char *resp, int maxresp_l, const char *msgfmt, ...)
{
// require connection
if (!ARCIsConnected())
return (false);
// build message
char msg[128];
va_list ap;
va_start (ap, msgfmt);
vsnprintf (msg, sizeof(msg), msgfmt, ap);
va_end (ap);
// send with a few retrys
for (uint8_t t = 1; t <= MAX_SNDRETRY; t++) {
// send message
_TRACE_IO (("ARC: %lu TX %d: %s\n", now(), t, msg));
arc_client.println(msg);
// get response
if (getTCPLine (arc_client, resp, maxresp_l, NULL)) {
_TRACE_IO (("ARC: %lu RX %d: %s\n", now(), t, resp));
return (true);
}
// failed, try sending again then expect two responses
Serial.printf ("ARC: %lu TXB %d: %s\n", now(), t, msg);
arc_client.println(msg);
if (getTCPLine (arc_client, resp, maxresp_l, NULL)
&& getTCPLine (arc_client, resp, maxresp_l, NULL)) {
Serial.printf ("ARC: %lu RXB %d: %s\n", now(), t, resp);
return (true);
}
// still fails, try closing and reconnect
Serial.printf ("ARC: %lu try %d reconnecting\n", now(), t);
closeGimbal();
if (!connectARCOk(MAX_MC_TRY))
break; // give up
}
// retry efforts failed
Serial.printf ("ARC: no response to %s\n", msg);
plotMessage (plot3_b, RA8875_RED, "Connection lost");
closeGimbal();
return (false);
}
/* send the given get command that returns a floating value and return value.
* if io trouble then log, close and return false; else if starts with OK return value and true;
* else log and return false.
* eg: get az -> OK az 123
* N.B. msg shall NOT include \n
*/
static bool getARCFloat (const char *msg, float *valp)
{
// send and collect response
char resp[150];
if (!doARCMessage (resp, sizeof(resp), "%s", msg))
return (false); // reason already logged
// check response OK and echo
if (sscanf (resp, "OK %*s %f", valp) != 1 || strncmp (&resp[3], &msg[4], strlen(&msg[4]))) {
Serial.printf ("ARC: %s\n", resp);
plotMessage (plot3_b, RA8875_RED, resp);
closeGimbal();
return (false);
}
// looks good
return (true);
}
/* send the given command that sets a floating value and return whether it was acked ok.
* if io trouble then log reason, close arc_client and return false.
* eg: set az 123 -> OK set az 123
* N.B. msg shall NOT include \n
*/
static bool setARCFloat (const char *msg, float val)
{
// send and collect response
char resp[150];
if (!doARCMessage (resp, sizeof(resp), "%s %g", msg, val))
return (false); // reason already logged
// check response OK and echo
if (strncmp (resp, "OK ", 3) || strncmp (&resp[3], msg, strlen(msg))) {
Serial.printf ("ARC: %s\n", resp);
plotMessage (plot3_b, RA8875_RED, resp);
closeGimbal();
return (false);
}
// ok
return (true);
}
/* get az position and related info.
* this axis is required so close if trouble.
*/
static bool getAz()
{
char resp[150], moving[10], ataz[10], atlim[10];
if (doARCMessage (resp, sizeof(resp), "get az")) {
float azm0;
if (sscanf (resp, "OK az %f moving %10s ataz %10s deadband %f atlimit %10s az0 %f",
&az_now, moving, ataz, &az_deadband, atlim, &azm0) == 6) {
// friendly print and sat az_mnt0 when new
if (azm0 != az_mnt0) {
az_mnt0 = azm0;
displaySatInfo();
Serial.printf ("ARC: az_mnt0 %g\n", az_mnt0);
}
if (strcmp (ataz, "YES") == 0)
az_state = AZS_INPOS;
else if (strcmp (atlim, "CW") == 0)
az_state = AZS_CWLIMIT;
else if (strcmp (atlim, "CCW") == 0)
az_state = AZS_CCWLIMIT;
else if (strcmp (moving, "CW") == 0)
az_state = AZS_CWROT;
else if (strcmp (moving, "CCW") == 0)
az_state = AZS_CCWROT;
else if (strcmp (moving, "NO") == 0)
az_state = AZS_STOPPED;
return (true);
} else {
Serial.printf ("ARC: %s\n", resp);
plotMessage (plot3_b, RA8875_RED, resp);
closeGimbal();
return (false);
}
} else {
// doARCMessage already closed connection and posted reason
az_state = AZS_NONE;
return (false);
}
}
/* get el position and related info.
* this axis is optional, so just mark state ELS_NONE if error
*/
static bool getEl()
{
char resp[150], moving[10], atel[10], atlim[10];
if (doARCMessage (resp, sizeof(resp), "get el")) {
if (sscanf (resp, "OK el %f moving %10s atel %10s min %f max %f deadband %f atlimit %10s",
&el_now, moving, atel, &el_min, &el_max, &el_deadband, atlim) == 7) {
if (strcmp (atel, "YES") == 0)
el_state = ELS_INPOS;
else if (strcmp (atlim, "UP") == 0)
el_state = ELS_UPLIMIT;
else if (strcmp (atlim, "DOWN") == 0)
el_state = ELS_DOWNLIMIT;
else if (strcmp (moving, "UP") == 0)
el_state = ELS_UPROT;
else if (strcmp (moving, "DOWN") == 0)
el_state = ELS_DOWNROT;
else if (strcmp (moving, "NO") == 0)
el_state = ELS_STOPPED;
return (true);
} else {
el_state = ELS_NONE;
return (false);
}
} else {
// doARCMessage already closed connection and posted reason
el_state = ELS_NONE;
return (false);
}
}
/* return whether a satellite with the given rise and set azimuths will pass through az_mnt0.
* N.B. we assume no satellite orbit can ever subtend more than 180 in az.
* The moon can be up for wider than 180 degrees but always east to west.
*/
static bool passesThruWrap (float raz, float saz, bool isMoon)
{
if (isMoon) {
// TODO: eg same raz 100 saz 260 but could go N or S of zenith
return (az_mnt0 > raz && az_mnt0 < saz);
} else {
// normalize as if az_mnt0 was north
raz = fmodf (raz - az_mnt0 + 720, 360);
saz = fmodf (saz - az_mnt0 + 720, 360);
return ((raz > 180 && saz < raz - 180) || (raz < 180 && saz > raz + 180));
}
}
/* draw current Track button state with message msg, else default.
*/
static void drawTrackButton(bool force, const char *msg)
{
// decide string to draw
const char *str = msg ? msg : "Auto";
// avoid flashing from redrawing the same string in the same state
static char prev_str[15];
static bool prev_track;
if (!force && prev_str[0] != 0 && strcmp (str, prev_str) == 0 && prev_track == auto_track)
return;
strncpy (prev_str, str, sizeof(prev_str)-1); // preserve EOS
prev_track = auto_track;
// prepare button
if (auto_track) {
tft.fillRect (auto_b.x, auto_b.y, auto_b.w, auto_b.h, RA8875_WHITE);
tft.setTextColor (RA8875_BLACK);
} else {
tft.fillRect (auto_b.x, auto_b.y, auto_b.w, auto_b.h, RA8875_BLACK);
tft.drawRect (auto_b.x, auto_b.y, auto_b.w, auto_b.h, RA8875_WHITE);
tft.setTextColor (msg ? RA8875_RED : RA8875_WHITE);
}
// draw string
selectFontStyle (LIGHT_FONT, FAST_FONT);
uint16_t sw = getTextWidth ((char*)str);
tft.setCursor (auto_b.x+(auto_b.w-sw)/2, auto_b.y+3);
tft.print (str);
// wait a moment if message is temporary
if (msg)
wdDelay(1500);
}
/* draw Stop button in the given state
*/
static void drawStopButton (bool stop)
{
selectFontStyle (LIGHT_FONT, FAST_FONT);
if (stop) {
tft.fillRect (stop_b.x, stop_b.y, stop_b.w, stop_b.h, RA8875_WHITE);
tft.setTextColor (RA8875_BLACK);
} else {
tft.fillRect (stop_b.x, stop_b.y, stop_b.w, stop_b.h, RA8875_BLACK);
tft.drawRect (stop_b.x, stop_b.y, stop_b.w, stop_b.h, RA8875_WHITE);
tft.setTextColor (RA8875_WHITE);
}
tft.setCursor (stop_b.x+7, stop_b.y+3);
tft.print (F("Stop"));
}
/* draw info for one axis in plot3_b.
* N.B. we assume initGimbalGUI() has already been called.
*/
static void drawAxisInfo (float target_value, float value_now, SBox &lbox, SBox &rbox, uint16_t y0,
const char *state_str, uint16_t state_color)
{
// erase from indent to end of box
tft.fillRect (plot3_b.x+VALU_INDENT, y0, plot3_b.w-VALU_INDENT-1, CHAR_H+1, RA8875_BLACK);
// show value now
char buf[10];
snprintf (buf, sizeof(buf), "%4.0f", value_now);
selectFontStyle (LIGHT_FONT, SMALL_FONT);
tft.setTextColor (RA8875_WHITE);
tft.setCursor (plot3_b.x+VALU_INDENT, y0+CHAR_H);
tft.print(buf);
// show state
tft.setTextColor (state_color);
tft.setCursor (plot3_b.x + STATE_INDENT, y0+CHAR_H);
tft.print(state_str);
// show target value between l and r boxes
uint16_t x_l = lbox.x + lbox.w + 1;
tft.fillRect (x_l, lbox.y, rbox.x - x_l, lbox.h, RA8875_BLACK);
selectFontStyle (LIGHT_FONT, FAST_FONT);
tft.setTextColor (RA8875_WHITE);
snprintf (buf, sizeof(buf), "%4.0f", target_value);
tft.setCursor (x_l + 7, lbox.y+2);
tft.print (buf);
if (y0 == AZ_Y) {
// show az_mnt0
x_l = azcw2_b.x + azcw2_b.w + 10;
uint16_t w = plot3_b.x + plot3_b.w - x_l - 1;
tft.fillRect (x_l, lbox.y, w, lbox.h, RA8875_BLACK);
snprintf (buf, sizeof(buf), "W@%.0f", az_mnt0);
tft.setCursor (x_l, lbox.y+2);
tft.print (buf);
}
}
/* draw or erase the up-and-over symbol
*/
static void drawUpOver()
{
uint16_t r = elup2_b.h - 3; // too tall and it hits the tracking button
uint16_t x_c = elup2_b.x + 30;
uint16_t y_c = elup2_b.y + elup2_b.h - 2;
if (el_target > 90 || el_now > 90) {
tft.drawCircle (x_c, y_c, r, UPOVER_COLOR);
tft.drawLine (x_c+r, y_c+1, x_c+5*r/4, y_c-r/2, UPOVER_COLOR);
tft.drawLine (x_c+r, y_c+1, x_c+r/2, y_c-r/2, UPOVER_COLOR);
tft.fillRect (x_c-r-2, y_c+1, 2*r+4, r, RA8875_BLACK);
} else {
tft.fillRect (x_c-r-2, y_c-r-2, 9*r/4+4, r+4, RA8875_BLACK);
}
}
/* draw current state of gimbal in plot3_b, avoid needless redraws by comparing with previous values.
* N.B. we assume initGimbalGUI() has already been called.
*/
static void updateGUI()
{
// find az state description
uint16_t color = 0;
const char *str = NULL;
switch (az_state) {
case AZS_STOPPED:
color = BRGRAY;
str = "Idle";
break;
case AZS_CWROT:
color = RA8875_YELLOW;
str = " CW";
break;
case AZS_CCWROT:
color = RA8875_YELLOW;
str = "CCW";
break;
case AZS_CCWLIMIT:
color = RA8875_RED;
str = "Min";
break;
case AZS_CWLIMIT:
color = RA8875_RED;
str = "Max";
break;
case AZS_INPOS:
color = RA8875_GREEN;
str = " Ok";
break;
case AZS_UNKNOWN:
color = RA8875_RED;
str = "???";
break;
case AZS_NONE:
return;
}
// draw if changed enough
if (az_state != paz_state || roundf(az_target) != paz_target || roundf(az_now) != paz_now) {
drawAxisInfo (az_target, az_now, azccw_b, azcw_b, AZ_Y, str, color);
paz_state = az_state;
paz_target = roundf(az_target);
paz_now = roundf(az_now);
}
// show el state if gimbal
if (el_state != ELS_NONE) {
switch (el_state) {
case ELS_STOPPED:
color = BRGRAY;
str = "Idle";
break;
case ELS_UPROT:
color = RA8875_YELLOW;
str = " UP"; // avoid p descender
break;
case ELS_DOWNROT:
color = RA8875_YELLOW;
str = "Down";
break;
case ELS_DOWNLIMIT:
color = RA8875_RED;
str = "Min";
break;
case ELS_UPLIMIT:
color = RA8875_RED;
str = "Max";
break;
case ELS_INPOS:
color = RA8875_GREEN;
str = " Ok";
break;
case ELS_UNKNOWN:
color = RA8875_RED;
str = "???";
break;
case ELS_NONE:
break;
}
// draw if changed enough
if (el_state != pel_state || roundf(el_target) != pel_target || roundf(el_now)!= pel_now) {
drawAxisInfo (el_target, el_now, eldown_b, elup_b, EL_Y, str, color);
pel_state = el_state;
pel_target = roundf(el_target);
pel_now = roundf(el_now);
}
}
// button
drawTrackButton(false, NULL);
drawStopButton(user_stop);
// add up-over marker
drawUpOver();
}
static void drawArrow (SBox &b, ArrowDir d)
{
uint16_t x_c = b.x + b.w/2; // x center
uint16_t x_r = b.x + b.w - 1; // x right
uint16_t y_c = b.y + b.h/2; // y center
uint16_t y_b = b.y + b.h - 1; // y bottom
switch (d) {
case AR_LEFT:
tft.drawLine (x_r, b.y, b.x, y_c, ARROW_COLOR);
tft.drawLine (b.x, y_c, x_r, y_b, ARROW_COLOR);
tft.drawLine (x_r, y_b, x_r, b.y, ARROW_COLOR);
break;
case AR_DOWN:
tft.drawLine (b.x, b.y, x_r, b.y, ARROW_COLOR);
tft.drawLine (b.x, b.y, x_c, y_b, ARROW_COLOR);
tft.drawLine (x_c, y_b, x_r, b.y, ARROW_COLOR);
break;
case AR_UP:
tft.drawLine (b.x, y_b, x_c, b.y, ARROW_COLOR);
tft.drawLine (x_c, b.y, x_r, y_b, ARROW_COLOR);
tft.drawLine (x_r, y_b, b.x, y_b, ARROW_COLOR);
break;
case AR_RIGHT:
tft.drawLine (b.x, b.y, x_r, y_c, ARROW_COLOR);
tft.drawLine (b.x, y_b, x_r, y_c, ARROW_COLOR);
tft.drawLine (b.x, b.y, b.x, y_b, ARROW_COLOR);
break;
}
}
/* determine sat_upover if we have a 2-axis gimbal tracking sats with el_max > 90.
* "upover" means use gimbal el > 90 with opposite az to avoid tracking through wrap location.
* N.B. beware sat rise/set times may not occur exactly when el is SAT_MIN_EL so avoid when near
* by setting upover_pending then calling again often from updateGimbal().
*/
static void initUpOver()
{
#define SAT_EL_RSERR 0.2F // approx el gap due to err in predicted rise/set times
float az, el, riseaz, setaz;
// assume no
sat_upover = false;
// never for 1 axis system or one with no el travel
if (el_state == ELS_NONE || el_max <= 90)
return;
if (getSatAzElNow (NULL, &az, &el, &riseaz, &setaz, NULL, NULL) && riseaz != SAT_NOAZ) {
if (el < SAT_MIN_EL - SAT_EL_RSERR) {
// sat not up so determine upover using next rise/set locations
sat_upover = setaz == SAT_NOAZ ? false : passesThruWrap (riseaz, setaz, isSatMoon());
upover_pending = false;
// Serial.printf ("UPOVER %d el %g rise %g set %g\n", sat_upover, el, riseaz, setaz);
} else if (el < SAT_MIN_EL + SAT_EL_RSERR) {
// defer until out of abiguous range
upover_pending = true;
// Serial.printf ("UPOVER pending el %g\n", el);
} else {
// sat is up now so determine upover using az now and set locations for remainder of pass
sat_upover = setaz == SAT_NOAZ ? false : passesThruWrap (az, setaz, isSatMoon());
upover_pending = false;
// Serial.printf ("UPOVER %d el %g az %g set %g\n", sat_upover, el, az, setaz);
}
}
}
/* inform ARC it is ok to go now
*/
static void unStopGimbal()
{
if (ARCIsConnected()) {
// preset current target and go
(void) setARCFloat ("set az", az_target);
if (el_state != ELS_NONE)
setARCFloat ("set el", el_target);
char resp[150];
(void) doARCMessage (resp, sizeof(resp), "set stop 0");
}
}
/* init the gimbal GUI: erase and draw fixed content
*/
void initGimbalGUI()
{
// erase all then draw border
tft.fillRect (plot3_b.x, plot3_b.y, plot3_b.w, plot3_b.h, RA8875_BLACK);
tft.drawRect (plot3_b.x, plot3_b.y, plot3_b.w, plot3_b.h, GRAY);
// position main rows, Y depends on 1 or 2 axes
AZ_Y = el_state != ELS_NONE ? plot3_b.y + plot3_b.h/3-10 : plot3_b.y + plot3_b.h/2-20;
EL_Y = plot3_b.y + 2*plot3_b.h/3-18;
// position controls
azccw_b.x = plot3_b.x + plot3_b.w/5;
azccw_b.y = AZ_Y + CHAR_H + 4;
azccw_b.w = DIRBOX_SZ;
azccw_b.h = DIRBOX_SZ;
azccw2_b.x = azccw_b.x - DIRBOX_SZ - DIRBOX_GAP;
azccw2_b.y = azccw_b.y;
azccw2_b.w = DIRBOX_SZ;
azccw2_b.h = DIRBOX_SZ;
azcw_b.x = plot3_b.x + plot3_b.w/2 + 10;
azcw_b.y = azccw_b.y;
azcw_b.w = DIRBOX_SZ;
azcw_b.h = DIRBOX_SZ;
azcw2_b.x = azcw_b.x + DIRBOX_SZ + DIRBOX_GAP;
azcw2_b.y = azcw_b.y;
azcw2_b.w = DIRBOX_SZ;
azcw2_b.h = DIRBOX_SZ;
eldown_b.x = plot3_b.x + plot3_b.w/5;
eldown_b.y = EL_Y + CHAR_H + 4;
eldown_b.w = DIRBOX_SZ;
eldown_b.h = DIRBOX_SZ;
eldown2_b.x = eldown_b.x - DIRBOX_SZ - DIRBOX_GAP;
eldown2_b.y = eldown_b.y;
eldown2_b.w = DIRBOX_SZ;
eldown2_b.h = DIRBOX_SZ;
elup_b.x = plot3_b.x + plot3_b.w/2 + 10;
elup_b.y = EL_Y + CHAR_H + 4;
elup_b.w = DIRBOX_SZ;
elup_b.h = DIRBOX_SZ;
elup2_b.x = elup_b.x + DIRBOX_SZ + DIRBOX_GAP;
elup2_b.y = elup_b.y;
elup2_b.w = DIRBOX_SZ;
elup2_b.h = DIRBOX_SZ;
stop_b.x = plot3_b.x + plot3_b.w/8;
stop_b.y = plot3_b.y + plot3_b.h - 20;
stop_b.w = 2*plot3_b.w/8;
stop_b.h = 15;
auto_b.x = plot3_b.x + 4*plot3_b.w/8;
auto_b.y = plot3_b.y + plot3_b.h - 20;
auto_b.w = 3*plot3_b.w/8;
auto_b.h = 15;
// draw title
tft.setTextColor(RA8875_WHITE);
selectFontStyle (LIGHT_FONT, SMALL_FONT);
uint16_t tw = getTextWidth (title);
tft.setCursor (plot3_b.x+(plot3_b.w-tw)/2, TITLE_Y);
tft.print(title);
// draw version
tft.setTextColor(BRGRAY);
selectFontStyle (LIGHT_FONT, FAST_FONT);
tw = getTextWidth (version);
tft.setCursor (plot3_b.x+(plot3_b.w-tw)/2, VERSION_Y);
tft.print(version);
// label az for sure
selectFontStyle (LIGHT_FONT, SMALL_FONT);
tft.setTextColor(BRGRAY);
tft.setCursor (plot3_b.x+10, AZ_Y+CHAR_H);
tft.print(F("Az"));
// az controls
drawArrow (azccw_b, AR_LEFT);
drawArrow (azccw2_b, AR_LEFT);
drawArrow (azcw_b, AR_RIGHT);
drawArrow (azcw2_b, AR_RIGHT);
// el labels and controls if gimbal
if (el_state != ELS_NONE) {
tft.setTextColor(BRGRAY);
tft.setCursor (plot3_b.x+10, EL_Y+CHAR_H);
tft.print(F("El"));
drawArrow (elup_b, AR_UP);
drawArrow (elup2_b, AR_UP);
drawArrow (eldown_b, AR_DOWN);
drawArrow (eldown2_b, AR_DOWN);
}
// init and draw buttons
stopGimbalNow();
user_stop = true;
auto_track = false;
drawStopButton(user_stop);
drawTrackButton(true, NULL);
// insure all previous values appear invalid so updateGUI will draw them
paz_target = 999;
pel_target = 999;
paz_now = 999;
pel_now = 999;
paz_state = AZS_UNKNOWN;
pel_state = ELS_UNKNOWN;
}
/* call any time to stop all motion immediately.
* safe to call under any circumstances.
*/
void stopGimbalNow()
{
if (ARCIsConnected()) {
char resp[150];
(void) doARCMessage (resp, sizeof(resp), "set stop 1");
}
auto_track = false;
sat_upover = false;
user_stop = true;
}
/* return whether we have something to run
*/
bool haveGimbal()
{
// if not connected and we can't connect, then for sure we don't have a gimbal
if (!ARCIsConnected() && !connectARCOk(MIN_MC_TRY))
return (false);
// ok, we can go
return (true);
}
/* provide the current wrap az value, if applicable
*/
bool getGimbalWrapAz (float *azp)
{
if (!ARCIsConnected())
return (false);
*azp = az_mnt0;
return (true);
}
/* called often to update gimbal (or rotator).
* details depend on hardware available, if any.
*/
void updateGimbal ()
{
// get out fast if not connected
if (!ARCIsConnected())
return;
// not crazy often
static uint32_t prev_ms;
if (!timesUp(&prev_ms, UPDATE_MS))
return;
// set now once (can't do it in connectARCOk() because that can get called before now() is ready)
if (send_now) {
char resp[150];
(void) doARCMessage (resp, sizeof(resp), "set now %g %g %g",
2020 + (now()-1577836800)/31556736.0F, de_ll.lat_d, de_ll.lng_d);
send_now = false;
}
// get current positions
if (!getAz() || (el_state != ELS_NONE && !getEl())) {
closeGimbal();
return;
}
// if auto: set target to satellite if one is defined and we have a gimbal, else DX az
if (auto_track) {
if (el_state != ELS_NONE) {
// require good time for satellites
if (!goodTime()) {
auto_track = false;
stopGimbalNow();
drawTrackButton(false, "Not UTC");
return;
}
// update location
float az, el, riseaz, setaz;
if (getSatAzElNow (NULL, &az, &el, &riseaz, &setaz, NULL, NULL)) {
// compute new upover if new pass or pending an accurate prediction
if (isNewPass() || upover_pending)
initUpOver();
// just hold position if still pending