WebSVN – DashDisplay – Blame – /branches/Dashboard_L152_v2/user/Src/display.cpp

Rev	Author	Line No.	Line
66	mjames	1	/*
		2	* display.cpp
		3	*
		4	* Created on: 30 Nov 2020
		5	* Author: mike
		6	*/
		7
		8	#include "main.h"
		9	#include "display.h"
		10	#include "switches.h"
		11	#include "nvram.h"
		12	#include <cstring>
77	mjames	13	#include <cstdlib>
66	mjames	14	#include "libOLED/stm32_halDisplay.H"
		15	#include "libOLED/fontclass.H"
		16	#include "libOLED/displayDial.H"
		17	#include "libPlx/displayInfo.H"
		18	#include "libOLED/ap_math.h"
70	mjames	19	#include "libSmallPrintf/small_printf.h"
66	mjames	20
		21	#include "splash.H"
		22
		23	namespace
		24	{
		25	int const WIDTH = 128;
		26	int const HEIGHT = 64;
		27	int const DISPLAY_RAMWIDTH = 132;
74	mjames	28
66	mjames	29	}
		30
		31	uint8_t displayBuffer[2][dataSize(WIDTH, HEIGHT)];
		32
		33	stm32_halDisplay_t displays[MAX_DISPLAYS] =
		34	{stm32_halDisplay_t(WIDTH, HEIGHT, DISPLAY_RAMWIDTH, displayBuffer[0],
		35	&hspi1,
		36	SPI_CD_GPIO_Port,
		37	SPI_CD_Pin,
		38	SPI_RESET_GPIO_Port,
		39	SPI_RESET_Pin,
		40	SPI_NSS1_GPIO_Port,
		41	SPI_NSS1_Pin),
		42	stm32_halDisplay_t(WIDTH, HEIGHT,
		43	DISPLAY_RAMWIDTH,
		44	displayBuffer[1],
		45	&hspi1,
		46	SPI_CD_GPIO_Port,
		47	SPI_CD_Pin,
		48	SPI_RESET_GPIO_Port,
		49	SPI_RESET_Pin,
		50	SPI_NSS2_GPIO_Port,
		51	SPI_NSS2_Pin)};
		52
		53	displayDial_t dials[MAX_DISPLAYS] =
67	mjames	54	{displayFullDial_t(displays[0]), displayFullDial_t(displays[1])};
66	mjames	55	#if defined __cplusplus
		56	extern "C"
		57	{
		58	#endif
		59	static void
		60	showMinMax(display_t &display, uint8_t dp_pos, int16_t int_min,
		61	uint16_t int_max)
		62	{
		63	const char padding[] = " ";
		64	// left justified display of minimum
		65	int8_t width = display.fontSigDigits(small_font, 0, 0, 0, dp_pos, int_min, WHITE);
		66	// pad with spaces if fewer than 6 characters are used.
		67	if (width != 6)
		68	display.printString(small_font, padding, 6 - width, WHITE);
		69
		70	display.gotoxy(0, 8);
		71	display.printString(small_font, "Min", 3, WHITE);
		72
		73	// right justified display of maximum
		74	width = display.fontSigDigits(small_font, 120, 0, 1, dp_pos, int_max, WHITE);
		75	// right justified display of maximum : pad spaces to left
		76	if (width != 6)
		77	display.printString(small_font, padding, 6 - width, WHITE);
		78
		79	display.gotoxy(110, 8);
		80	display.printString(small_font, "Max", 3, WHITE);
		81	}
		82
		83	void
		84	cc_init()
		85	{
		86	for (auto i = 0; i < MAX_DISPLAYS; i++)
		87	{
		88	display_t &display = displays[i];
		89	if (i == 0)
		90	display.reset();
		91	display.init();
		92	display.clearDisplay(BLACK);
		93	displaySplash(display);
		94	display.gotoxy(8, 32);
		95	display.printString(large_font, i == 0 ? "1" : "2", 1, BLACK);
		96	display.display();
		97	}
		98
		99	HAL_Delay(1000);
		100
		101	for (auto i = 0; i < MAX_DISPLAYS; i++)
		102	{
		103	display_t &display = displays[i];
		104	display.clearDisplay(BLACK);
		105	display.setPixelMode(WHITE);
		106	display.display();
		107	context_t &context = contexts[i];
71	mjames	108	context.dial_timer = 500; // enough time to see at least one frame of PLX before NVRAM check
66	mjames	109	context.dial1 = -1;
74	mjames	110	context.OldObservation = nullObs;
79	mjames	111
		112	context.knobPos = -1; // indicate it is initialised
66	mjames	113	}
		114	}
		115
		116	// Check to see if there is an observation/instance in the dynamic data array
		117	// that matches the current observation/instance in the NVRAM
		118
		119	void
		120	cc_check_nvram(int dialIndex)
		121	{
		122	if (dialIndex < 0 && dialIndex > MAX_DISPLAYS)
		123	return;
70	mjames	124	// algorithm only works when there is a vector of observations
74	mjames	125
66	mjames	126	context_t &context = contexts[dialIndex];
		127
		128	// check for timer timeout on consistent timer
		129
		130	if (context.dial_timer)
		131	{
		132	context.dial_timer--;
75	mjames	133	}
		134	if (context.dial_timer == 0)
		135	{
		136	context.dial_timer = DialTimeout;
		137	int i;
		138	// use dialIndex+1 as tag for data : always non-zero.
		139	nvram_info_t *dial_nvram = find_nvram_data(dialIndex + 1);
		140
79	mjames	141	// initial read operation if knobPos < 0
75	mjames	142	if (dial_nvram && context.knobPos < 0)
66	mjames	143	{
79	mjames	144	context.knobPos = dial_nvram->data.pos;
		145	return;
75	mjames	146	}
79	mjames	147	if (context.knobPos < 0)
75	mjames	148	context.knobPos = dialIndex; // timed out , not in NVRAM, use a default
66	mjames	149
75	mjames	150	// dont save dial info for invalid data
		151	if (!isValid(context.knobPos))
		152	return;
		153	// is this a change since the last timeout ?
66	mjames	154
79	mjames	155	if (!dial_nvram \|\| context.knobPos != dial_nvram->data.pos)
75	mjames	156	{
70	mjames	157
75	mjames	158	// store the observation and instance in the NVRAM, not dial position.
		159	nvram_info_t curr_val;
79	mjames	160	curr_val.data.pos = context.knobPos;
75	mjames	161	curr_val.data.tag = dialIndex + 1;
66	mjames	162
75	mjames	163	write_nvram_data(curr_val);
66	mjames	164	}
		165	}
		166	}
		167
		168	int
		169	cc_display(int dialIndex, int suppressIndex)
		170
		171	{
74	mjames	172
66	mjames	173	if (dialIndex < 0 && dialIndex > MAX_DISPLAYS)
		174	return -1;
		175	context_t &context = contexts[dialIndex];
		176	displayDial_t &dial = dials[dialIndex];
		177	stm32_halDisplay_t &display = displays[dialIndex];
		178	int itemIndex = context.knobPos;
		179	char buff[10];
		180	int i;
75	mjames	181	const char *msg;
70	mjames	182	int len;
74	mjames	183	// check for startup phase
72	mjames	184	if (itemIndex < 0)
		185	{
		186	display.clearDisplay(BLACK);
		187	i = small_sprintf(buff, "Wait");
		188	display.gotoxy(64 - i * 4, 48);
		189	display.printString(large_font, buff, i, WHITE);
66	mjames	190
72	mjames	191	display.display();
74	mjames	192	return -1;
72	mjames	193	}
		194
66	mjames	195	// check for item suppression
		196	if (itemIndex == suppressIndex)
		197	{
		198	context.dial1 = -1;
74	mjames	199	context.OldObservation = nullObs;
70	mjames	200	display.clearDisplay(BLACK);
		201	i = small_sprintf(buff, "Supp-%02d", itemIndex);
		202	display.gotoxy(64 - i * 4, 48);
		203	display.printString(large_font, buff, i, WHITE);
		204
66	mjames	205	display.display();
		206	return -1; // we suppressed this display
		207	}
		208
74	mjames	209	// check for item validity
		210	if (!isValid(itemIndex))
70	mjames	211	{
		212	context.dial1 = -1;
74	mjames	213	context.OldObservation = nullObs;
70	mjames	214	display.clearDisplay(BLACK);
		215	i = small_sprintf(buff, "Inval-%02d", itemIndex);
		216	display.gotoxy(64 - i * 4, 48);
		217	display.printString(large_font, buff, i, WHITE);
		218
		219	display.display();
		220	return itemIndex;
		221	}
		222
66	mjames	223	// clear startup display off the screen
74	mjames	224	if (context.OldObservation.Obs == -1)
66	mjames	225	display.clearDisplay(BLACK);
		226
		227	int DataVal = Info[itemIndex].data; // data reading
74	mjames	228	PLX_Observations Observation = Info[itemIndex].observation.Obs;
		229	uint8_t Instance = Info[itemIndex].observation.Instance;
66	mjames	230	// now to convert the readings and format strings
		231	// find out limits
		232	// if the user presses the dial then reset min/max to current value
		233	if (push_pos[dialIndex] == 1)
		234	{
		235	Info[itemIndex].Max = DataVal;
		236	Info[itemIndex].Min = DataVal; // 12 bit max value
		237	}
		238
		239	// detect change in observation being displayed, reset the dial
		240	if (Observation < PLX_MAX_OBS)
76	mjames	241	{
74	mjames	242	if (Observation != context.OldObservation.Obs \|\| Instance != context.OldObservation.Instance)
66	mjames	243	{
76	mjames	244
70	mjames	245	display.clearDisplay(BLACK);
66	mjames	246	dial.draw_scale(DisplayInfo[Observation].Low,
		247	DisplayInfo[Observation].High, 12, 1,
		248	DisplayInfo[Observation].TickScale);
		249
		250	dial.draw_limits();
		251
		252	msg = DisplayInfo[Observation].name;
		253	len = 7;
74	mjames	254	int len1 = Instance > 0 ? len - 1 : len;
66	mjames	255	for (i = 0; i < len1 && msg[i]; i++)
		256	{
		257	buff[i] = msg[i];
		258	}
74	mjames	259	if (Instance > 0 && i < len)
66	mjames	260	{
74	mjames	261	buff[i++] = Instance + '1';
66	mjames	262	}
		263
		264	display.gotoxy(64 - i * 4, 48);
		265	display.printString(large_font, buff, i, WHITE);
		266
74	mjames	267	context.OldObservation.Obs = Observation;
		268	context.OldObservation.Instance = Instance;
66	mjames	269	context.dial1 = -1; // do not display old needle, cleared screen
		270	display.display();
		271	}
		272	}
		273
		274	if (Info[itemIndex].updated)
		275	{
		276	Info[itemIndex].updated = 0;
		277
		278	double max_rdg;
		279	double min_rdg;
		280	double cur_rdg;
		281	int int_rdg;
		282	int int_max;
		283	int int_min;
		284
		285	max_rdg = ConveriMFDRaw2Data((enum PLX_Observations)Observation, DisplayInfo[Observation].Units,
		286	Info[itemIndex].Max);
		287	min_rdg = ConveriMFDRaw2Data((enum PLX_Observations)Observation, DisplayInfo[Observation].Units,
		288	Info[itemIndex].Min);
		289	cur_rdg = ConveriMFDRaw2Data((enum PLX_Observations)Observation, DisplayInfo[Observation].Units,
		290	Info[itemIndex].data);
		291	int dp_pos; // where to print the decimal place
		292	float scale = 1.0;
		293	switch (DisplayInfo[Observation].DP)
		294	{
		295	default:
		296	case 0:
		297	scale = 1.0;
		298	dp_pos = display_t::NO_DECIMAL;
		299	break;
		300	case 1:
		301	scale = 10.0;
		302	dp_pos = 1;
		303	break;
		304	case 2:
		305	scale = 100.0;
		306	dp_pos = 2;
		307	break;
		308	}
		309	int_rdg = (int)(cur_rdg * scale);
		310	int_max = (int)(max_rdg * scale);
		311	int_min = (int)(min_rdg * scale);
		312
		313	cur_rdg -= DisplayInfo[Observation].Low;
		314	cur_rdg = ap_math::SINE_STEPS * cur_rdg / (DisplayInfo[Observation].High - DisplayInfo[Observation].Low);
		315
		316	context.dial0 = (int)cur_rdg;
		317
		318	display.gotoxy(32, 28);
		319	display.fontDigits(large_font, 4, dp_pos, int_rdg, WHITE);
		320
		321	display.printString(small_font, DisplayInfo[Observation].suffix,
		322	strlen(DisplayInfo[Observation].suffix));
		323	display.printString(small_font, " ",
		324	3 - strlen(DisplayInfo[Observation].suffix));
		325	// print value overlaid by needle
		326
		327	/* old needle un-draw */
		328	if (context.dial1 >= 0)
		329	{
		330	dial.draw_needle(context.dial1);
		331	}
		332	dial.draw_needle(context.dial0);
		333	context.dial1 = context.dial0;
		334	showMinMax(display, dp_pos, int_min, int_max);
		335	}
		336	else
		337	{
		338	if (Info[itemIndex].lastUpdated && ((HAL_GetTick() - Info[itemIndex].lastUpdated) > 1000))
		339	{
74	mjames	340	context.OldObservation = nullObs; // force a redraw on next update
		341	Info[itemIndex].lastUpdated = 0; // and stop further timeouts.
66	mjames	342	}
		343	}
		344
		345	display.gotoxy(0, 32);
		346
		347	// display BT connection status
		348	display.printString(small_font, btConnected() ? "\x81" : " ", 1);
		349
		350	display.display();
		351
		352	return itemIndex;
		353	}
		354	}

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(root)/branches/Dashboard_L152_v2/user/Src/display.cpp – Rev 79