WebSVN – EngineBay2 – Blame – /trunk/Src/main.c

Rev	Author	Line No.	Line
2	mjames	1	/**
20	mjames	2	******************************************************************************
		3	* File Name : main.c
		4	* Description : Main program body
		5	******************************************************************************
		6	*
		7	* COPYRIGHT(c) 2017 STMicroelectronics
		8	*
		9	* Redistribution and use in source and binary forms, with or without modification,
		10	* are permitted provided that the following conditions are met:
		11	* 1. Redistributions of source code must retain the above copyright notice,
		12	* this list of conditions and the following disclaimer.
		13	* 2. Redistributions in binary form must reproduce the above copyright notice,
		14	* this list of conditions and the following disclaimer in the documentation
		15	* and/or other materials provided with the distribution.
		16	* 3. Neither the name of STMicroelectronics nor the names of its contributors
		17	* may be used to endorse or promote products derived from this software
		18	* without specific prior written permission.
		19	*
		20	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
		21	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
		22	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
		23	* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
		24	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
		25	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
		26	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
		27	* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
		28	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
		29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		30	*
		31	******************************************************************************
		32	*/
2	mjames	33	/* Includes ------------------------------------------------------------------*/
		34	#include "stm32l1xx_hal.h"
		35
		36	/* USER CODE BEGIN Includes */
7	mjames	37	#include "serial.h"
9	mjames	38	#include "plx.h"
		39	#include "misc.h"
2	mjames	40	/* USER CODE END Includes */
		41
		42	/* Private variables ---------------------------------------------------------*/
		43	ADC_HandleTypeDef hadc;
6	mjames	44	DMA_HandleTypeDef hdma_adc;
2	mjames	45
		46	SPI_HandleTypeDef hspi1;
		47
		48	TIM_HandleTypeDef htim2;
		49	TIM_HandleTypeDef htim6;
		50
		51	UART_HandleTypeDef huart1;
6	mjames	52	UART_HandleTypeDef huart2;
2	mjames	53
		54	/* USER CODE BEGIN PV */
		55	/* Private variables ---------------------------------------------------------*/
		56
9	mjames	57	// with a dwell angle of 45 degrees , 4 cylinders and a maximum RPM of 5000
		58	// freq = 5000/60 * 2 = 166Hz. Because the breaker might bounce , we accept the first pulse longer than 1/300 of a second as being a proper closure .
		59	// the TIM2 counter counts in 10uS increments,
		60	#define BREAKER_MIN (RPM_COUNT_RATE/300)
		61
22	mjames	62	// wait for about 1 second to decide whether or not starter is on
21	mjames	63
22	mjames	64	#define STARTER_LIMIT 10
		65
9	mjames	66	volatile char TimerFlag = 0;
		67
		68	volatile char NoSerialInCTR = 0; // Missing characters coming in on USART1
		69	volatile char NoSerialIn = 0;
		70
8	mjames	71	// storage for ADC
19	mjames	72	uint16_t ADC_Samples[6];
8	mjames	73
17	mjames	74	#define Scale 1024.0
		75	const float ADC_Scale = 3.3 / (Scale * 4096.0); // convert to a voltage
		76
19	mjames	77	uint32_t FILT_Samples[6]; // filtered ADC samples * 1024
9	mjames	78	// Rev counter processing from original RevCounter Project
		79	unsigned int RPM_Diff = 0;
		80	unsigned int RPM_Count_Latch = 0;
		81	// accumulators
		82	unsigned int RPM_Pulsecount = 0;
		83	unsigned int RPM_FilteredWidth = 0;
		84
		85	unsigned int Coded_RPM = 0;
		86	unsigned int Coded_CHT = 0;
		87
18	mjames	88	uint32_t Power_CHT_Timer;
		89
21	mjames	90	uint16_t Starter_Debounce = 0;
		91
2	mjames	92	/* USER CODE END PV */
		93
		94	/* Private function prototypes -----------------------------------------------*/
		95	void SystemClock_Config(void);
		96	void Error_Handler(void);
		97	static void MX_GPIO_Init(void);
6	mjames	98	static void MX_DMA_Init(void);
2	mjames	99	static void MX_ADC_Init(void);
		100	static void MX_SPI1_Init(void);
		101	static void MX_TIM2_Init(void);
		102	static void MX_TIM6_Init(void);
13	mjames	103	static void MX_USART2_UART_Init(void);
2	mjames	104	static void MX_USART1_UART_Init(void);
		105
		106	/* USER CODE BEGIN PFP */
		107	/* Private function prototypes -----------------------------------------------*/
		108
9	mjames	109	/* USER CODE END PFP */
7	mjames	110
9	mjames	111	/* USER CODE BEGIN 0 */
7	mjames	112
19	mjames	113	void plx_sendword(int x)
		114	{
9	mjames	115	PutCharSerial(&uc1, ((x) >> 6) & 0x3F);
		116	PutCharSerial(&uc1, (x) & 0x3F);
		117	}
2	mjames	118
17	mjames	119	void init_ADC_filter()
		120	{
		121	int i;
19	mjames	122	for (i = 0; i < 6; i++)
		123	{
17	mjames	124	FILT_Samples[i] = 0;
19	mjames	125	}
17	mjames	126	}
		127
		128	void filter_ADC_samples()
		129	{
19	mjames	130	int i;
		131	for (i = 0; i < 6; i++)
		132	{
		133	FILT_Samples[i] += (ADC_Samples[i] * Scale - FILT_Samples[i]) / 2;
		134	}
17	mjames	135	}
		136
19	mjames	137	void ProcessRPM(int instance)
		138	{
9	mjames	139	// compute the timer values
		140	// snapshot timers
		141	unsigned long RPM_Pulsewidth;
		142	unsigned long RPM_Count_Val;
		143	__disable_irq(); // copy the counter value
		144	RPM_Count_Val = RPM_Count;
		145	__enable_irq();
		146	// do calculations
		147	// if there is only one entry, cannot get difference
19	mjames	148	if (RPM_Count_Latch != RPM_Count_Val)
		149	{
		150	while (1)
		151	{
9	mjames	152	unsigned int base_time;
		153	unsigned int new_time;
		154	// if we are at N-1, stop.
		155	unsigned int next_count = RPM_Count_Latch + 1;
19	mjames	156	if (next_count == RPM_SAMPLES)
		157	{
9	mjames	158	next_count = 0;
		159	}
19	mjames	160	if (next_count == RPM_Count_Val)
		161	{
9	mjames	162	break;
		163	}
		164	base_time = RPM_Time[RPM_Count_Latch];
		165	new_time = RPM_Time[next_count];
		166	RPM_Count_Latch = next_count;
19	mjames	167	if (new_time > base_time)
		168	{
9	mjames	169	RPM_Pulsewidth = new_time - base_time; // not wrapped
19	mjames	170	}
		171	else
		172	{
13	mjames	173	RPM_Pulsewidth = new_time - base_time + 65536; // deal with wrapping
9	mjames	174	}
2	mjames	175
9	mjames	176	RPM_Diff += RPM_Pulsewidth;
		177	// need to check if this is a long pulse. If it is, keep the answer
19	mjames	178	if (RPM_Pulsewidth > BREAKER_MIN)
		179	{
9	mjames	180	RPM_Pulsecount++; // count one pulse
		181	RPM_FilteredWidth += RPM_Diff; // add its width to the accumulator
		182	RPM_Diff = 0; // reset accumulator of all the narrow widths
		183	}
		184	}
		185
		186	}
		187
19	mjames	188	if (RPM_Pulsecount > 0)
		189	{
9	mjames	190	// now have time for N pulses in clocks
		191	// need to scale by 19.55: one unit is 19.55 RPM
		192	// 1Hz is 60 RPM
17	mjames	193	float new_RPM = (30.0 / 19.55 * RPM_Pulsecount * RPM_COUNT_RATE)
19	mjames	194	/ (RPM_FilteredWidth) + 0.5;
17	mjames	195
19	mjames	196	Coded_RPM += (new_RPM * Scale - Coded_RPM) / 4;
17	mjames	197
9	mjames	198	#if !defined MY_DEBUG
		199	// reset here unless we want to debug
		200	RPM_Pulsecount = 0;
		201	RPM_FilteredWidth = 0;
		202	#endif
		203	}
		204
17	mjames	205	// send the current RPM *calculation
9	mjames	206	plx_sendword(PLX_RPM);
		207	PutCharSerial(&uc1, instance);
19	mjames	208	plx_sendword(Coded_RPM / Scale);
9	mjames	209	}
		210
		211	// this uses a MAX6675 which is a simple 16 bit read
		212	// SPI is configured for 8 bits so I can use an OLED display if I need it
11	mjames	213	// must wait > 0.22 seconds between conversion attempts as this is the measurement time
		214	//
18	mjames	215
21	mjames	216	FunctionalState CHT_Enable = ENABLE;
18	mjames	217
23	mjames	218	#define CORR 3
		219
19	mjames	220	uint8_t CHT_Timer[2] =
23	mjames	221	{ 0, 0 }; // two temperature readings : from two sensors
		222
		223
21	mjames	224	uint16_t CHT_Observations[2] =
19	mjames	225	{ 0, 0 };
		226
		227	void ProcessCHT(int instance)
		228	{
9	mjames	229	uint8_t buffer[2];
18	mjames	230	if (instance > 2)
		231	return;
		232	CHT_Timer[instance]++;
21	mjames	233	if ((CHT_Enable == ENABLE) && (CHT_Timer[instance] >= 4)) // every 300 milliseconds
19	mjames	234	{
11	mjames	235
18	mjames	236	CHT_Timer[instance] = 0;
11	mjames	237
18	mjames	238	uint16_t Pin = (instance == 0) ? SPI_NS_Temp_Pin : SPI_NS_Temp2_Pin;
9	mjames	239
18	mjames	240	HAL_GPIO_WritePin(SPI_NS_Temp_GPIO_Port, Pin, GPIO_PIN_RESET);
9	mjames	241
18	mjames	242	HAL_SPI_Receive(&hspi1, buffer, 2, 2);
9	mjames	243
18	mjames	244	HAL_GPIO_WritePin(SPI_NS_Temp_GPIO_Port, Pin, GPIO_PIN_SET);
9	mjames	245
18	mjames	246	uint16_t obs = (buffer[0] << 8) \| buffer[1];
9	mjames	247
22	mjames	248	// good observation if the status bit is clear, and the reading is less than 1023
21	mjames	249
23	mjames	250	uint16_t temp_c = obs>>5;
21	mjames	251
23	mjames	252	uint8_t good = ((obs & 4) == 0) && (temp_c > 0) && (temp_c < 250);
		253
19	mjames	254	if (good)
		255	{
23	mjames	256	CHT_Observations[instance]=temp_c;
		257
18	mjames	258	}
23	mjames	259
11	mjames	260	}
		261
16	mjames	262	plx_sendword(PLX_X_CHT);
9	mjames	263	PutCharSerial(&uc1, instance);
19	mjames	264	plx_sendword(CHT_Observations[instance]);
9	mjames	265
		266	}
		267
21	mjames	268	void EnableCHT(FunctionalState state)
		269
19	mjames	270	{
20	mjames	271	GPIO_InitTypeDef GPIO_InitStruct;
19	mjames	272
		273	CHT_Enable = state;
20	mjames	274
21	mjames	275
20	mjames	276	/* enable SPI in live mode : assume it and its GPIOs are already initialised in SPI mode */
21	mjames	277	if (state == ENABLE)
20	mjames	278	{
21	mjames	279	HAL_GPIO_WritePin(ENA_AUX_5V_GPIO_Port, ENA_AUX_5V_Pin, GPIO_PIN_SET );
20	mjames	280	HAL_GPIO_WritePin(SPI_NS_Temp_GPIO_Port, SPI_NS_Temp_Pin, GPIO_PIN_SET);
		281	HAL_GPIO_WritePin(SPI_NS_Temp2_GPIO_Port, SPI_NS_Temp2_Pin,
		282	GPIO_PIN_SET);
		283
		284	/* put the SPI pins back into SPI AF mode */
		285	GPIO_InitStruct.Pin = SPI1_MOSI_Pin \| SPI1_MISO_Pin \| SPI1_SCK_Pin;
		286	GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
		287	GPIO_InitStruct.Pull = GPIO_NOPULL;
		288	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
		289	GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
		290	HAL_GPIO_Init(SPI1_SCK_GPIO_Port, &GPIO_InitStruct);
		291
		292	}
		293	else
		294	{
		295	/* Power down the SPI interface taking signals all low */
21	mjames	296	HAL_GPIO_WritePin(ENA_AUX_5V_GPIO_Port, ENA_AUX_5V_Pin, GPIO_PIN_RESET );
20	mjames	297	HAL_GPIO_WritePin(SPI_NS_Temp_GPIO_Port, SPI_NS_Temp_Pin,
		298	GPIO_PIN_RESET);
		299	HAL_GPIO_WritePin(SPI_NS_Temp2_GPIO_Port, SPI_NS_Temp2_Pin,
		300	GPIO_PIN_RESET);
		301
		302	HAL_GPIO_WritePin(SPI1_SCK_GPIO_Port,
		303	SPI1_MOSI_Pin \| SPI1_MISO_Pin \| SPI1_SCK_Pin, GPIO_PIN_RESET);
		304
		305	/* put the SPI pins back into GPIO mode */
		306	GPIO_InitStruct.Pin = SPI1_MOSI_Pin \| SPI1_MISO_Pin \| SPI1_SCK_Pin;
		307	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
		308	GPIO_InitStruct.Pull = GPIO_NOPULL;
		309	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
		310	HAL_GPIO_Init(SPI1_SCK_GPIO_Port, &GPIO_InitStruct);
		311
		312	}
		313
19	mjames	314	}
		315
17	mjames	316	// 1023 is 20.00 volts.
19	mjames	317	void ProcessBatteryVoltage(int instance)
		318	{
18	mjames	319	float reading = FILT_Samples[instance] * ADC_Scale;
		320	reading = reading * 7.8125; // real voltage
		321	reading = reading * 51.15; // 1023/20
17	mjames	322
12	mjames	323	plx_sendword(PLX_Volts);
		324	PutCharSerial(&uc1, instance);
18	mjames	325	plx_sendword((uint16_t) reading);
12	mjames	326
18	mjames	327	}
12	mjames	328
18	mjames	329	/****!
		330	* @brief this reads the reference voltage within the STM32L151
		331	* Powers up reference voltage and temperature sensor, waits 3mS and takes reading
		332	* Requires that the ADC be powered up
		333	*/
12	mjames	334
18	mjames	335	uint32_t ADC_VREF_MV = 3300; // 3.300V typical
		336	const uint16_t STM32REF_MV = 1224; // 1.224V typical
		337
19	mjames	338	void CalibrateADC(void)
		339	{
21	mjames	340	uint32_t adc_val = FILT_Samples[5]; // as set up in device config
18	mjames	341	ADC_VREF_MV = (STM32REF_MV * 4096) / adc_val;
12	mjames	342	}
		343
19	mjames	344	void ProcessCPUTemperature(int instance)
		345	{
18	mjames	346	int32_t temp_val;
21	mjames	347	uint16_t TS_CAL30 = (uint16_t ) (0x1FF8007AUL); /* ADC reading for temperature sensor at 30 degrees C with Vref = 3000mV */
		348	uint16_t TS_CAL110 = (uint16_t ) (0x1FF8007EUL); /* ADC reading for temperature sensor at 110 degrees C with Vref = 3000mV */
18	mjames	349	/* get the ADC reading corresponding to ADC channel 16 after turning on the ADC */
		350
		351	temp_val = FILT_Samples[5];
		352
		353	/* renormalise temperature value to account for different ADC Vref : normalise to that which we would get for a 3000mV reference */
21	mjames	354	temp_val = temp_val * ADC_VREF_MV / (Scale * 3000UL);
18	mjames	355
		356	int32_t result = 800 * ((int32_t) temp_val - TS_CAL30);
		357	result = result / (TS_CAL110 - TS_CAL30) + 300;
		358
19	mjames	359	if (result < 0)
		360	{
		361	result = 0;
		362	}
18	mjames	363	plx_sendword(PLX_FluidTemp);
		364	PutCharSerial(&uc1, instance);
19	mjames	365	plx_sendword(result / 10);
18	mjames	366
		367	}
		368
17	mjames	369	// the MAP sensor is giving us a reading of
		370	// 4.6 volts for 1019mB or 2.27 volts at the ADC input (resistive divider by 2.016)
		371	// I believe the sensor reads 4.5V at 1000kPa and 0.5V at 0kPa
12	mjames	372
17	mjames	373	void ProcessMAP(int instance)
		374	{
		375	// Using ADC_Samples[3] as the MAP input
19	mjames	376	float reading = FILT_Samples[3] * ADC_Scale;
		377	reading = reading * 2.016; // real voltage
		378	reading = (reading) * 1000 / 4.5; // do not assume 0.5 volt offset : reading from 0 to 4.5 instead of 0.5 to 4.5
17	mjames	379	plx_sendword(PLX_MAP);
		380	PutCharSerial(&uc1, instance);
19	mjames	381	plx_sendword((uint16_t) reading);
17	mjames	382
		383	}
		384
		385	// the Oil pressi sensor is giving us a reading of
		386	// 4.5 volts for 100 PSI or 2.25 volts at the ADC input (resistive divider by 2.016)
		387	// I believe the sensor reads 4.5V at 100PSI and 0.5V at 0PSI
		388	// an observation of 1024 is 200PSI, so observation of 512 is 100 PSI.
		389
		390	void ProcessOilPress(int instance)
		391	{
		392	// Using ADC_Samples[2] as the MAP input
19	mjames	393	float reading = FILT_Samples[2] * ADC_Scale;
		394	reading = reading * 2.00; // real voltage
		395	reading = (reading - 0.5) * 512 / 4; // this is 1023 * 100/200
17	mjames	396
		397	plx_sendword(PLX_FluidPressure);
		398	PutCharSerial(&uc1, instance);
19	mjames	399	plx_sendword((uint16_t) reading);
17	mjames	400
		401	}
		402
16	mjames	403	void ProcessTiming(int instance)
		404	{
		405	plx_sendword(PLX_Timing);
		406	PutCharSerial(&uc1, instance);
19	mjames	407	plx_sendword(64 - 15); // make it negative
16	mjames	408	}
		409
2	mjames	410	/* USER CODE END 0 */
		411
19	mjames	412	int main(void)
		413	{
2	mjames	414
20	mjames	415	/* USER CODE BEGIN 1 */
2	mjames	416
20	mjames	417	/* USER CODE END 1 */
2	mjames	418
20	mjames	419	/* MCU Configuration----------------------------------------------------------*/
2	mjames	420
20	mjames	421	/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
		422	HAL_Init();
2	mjames	423
20	mjames	424	/* Configure the system clock */
		425	SystemClock_Config();
2	mjames	426
20	mjames	427	/* Initialize all configured peripherals */
		428	MX_GPIO_Init();
		429	MX_DMA_Init();
		430	MX_ADC_Init();
		431	MX_SPI1_Init();
		432	MX_TIM2_Init();
		433	MX_TIM6_Init();
		434	MX_USART2_UART_Init();
		435	MX_USART1_UART_Init();
2	mjames	436
20	mjames	437	/* USER CODE BEGIN 2 */
13	mjames	438	HAL_MspInit();
2	mjames	439
13	mjames	440	// Not using HAL USART code
9	mjames	441	__HAL_RCC_USART1_CLK_ENABLE()
		442	; // PLX comms port
		443	__HAL_RCC_USART2_CLK_ENABLE()
		444	; // Debug comms port
7	mjames	445	/* setup the USART control blocks */
		446	init_usart_ctl(&uc1, huart1.Instance);
		447	init_usart_ctl(&uc2, huart2.Instance);
		448
		449	EnableSerialRxInterrupt(&uc1);
		450	EnableSerialRxInterrupt(&uc2);
		451
13	mjames	452	HAL_SPI_MspInit(&hspi1);
		453
		454	HAL_ADC_MspInit(&hadc);
14	mjames	455
13	mjames	456	HAL_ADC_Start_DMA(&hadc, ADC_Samples, 6);
		457
18	mjames	458	HAL_ADC_Start_IT(&hadc);
13	mjames	459
		460	HAL_TIM_Base_MspInit(&htim6);
9	mjames	461	HAL_TIM_Base_Start_IT(&htim6);
13	mjames	462
		463	// initialise all the STMCubeMX stuff
		464	HAL_TIM_Base_MspInit(&htim2);
		465	// Start the counter
12	mjames	466	HAL_TIM_Base_Start(&htim2);
13	mjames	467	// Start the input capture and the interrupt
18	mjames	468	HAL_TIM_IC_Start_IT(&htim2, TIM_CHANNEL_1);
8	mjames	469
17	mjames	470	init_ADC_filter();
7	mjames	471
18	mjames	472	uint32_t Ticks = HAL_GetTick() + 100;
		473	int CalCounter = 0;
2	mjames	474
18	mjames	475	Power_CHT_Timer = HAL_GetTick() + 10000; /* wait 10 seconds before powering up the CHT sensor */
		476
		477
20	mjames	478
		479
		480	/* USER CODE END 2 */
		481
		482	/* Infinite loop */
		483	/* USER CODE BEGIN WHILE */
19	mjames	484	while (1)
		485	{
20	mjames	486	/* USER CODE END WHILE */
2	mjames	487
20	mjames	488	/* USER CODE BEGIN 3 */
2	mjames	489
19	mjames	490	if (HAL_GetTick() > Ticks)
		491	{
18	mjames	492	Ticks += 100;
		493	filter_ADC_samples();
		494	// delay to calibrate ADC
21	mjames	495	if (CalCounter < 1000)
19	mjames	496	{
18	mjames	497	CalCounter += 100;
9	mjames	498	}
		499
21	mjames	500	if (CalCounter == 900)
19	mjames	501	{
18	mjames	502	CalibrateADC();
		503	}
19	mjames	504	}
		505	/* when the starter motor is on then power down the CHT sensors as they seem to fail */
9	mjames	506
19	mjames	507	if (HAL_GPIO_ReadPin(STARTER_ON_GPIO_Port, STARTER_ON_Pin)
21	mjames	508	== GPIO_PIN_RESET )
19	mjames	509	{
21	mjames	510	if(Starter_Debounce < STARTER_LIMIT)
		511	{
		512	Starter_Debounce++;
		513	}
		514	}
		515	else
		516	{
		517	if(Starter_Debounce > 0)
		518	{
		519	Starter_Debounce --;
		520	}
		521	}
		522
		523	if (Starter_Debounce == STARTER_LIMIT)
		524	{
		525	EnableCHT(DISABLE);
20	mjames	526	Power_CHT_Timer = HAL_GetTick() + 5000;
19	mjames	527	}
		528	else
		529	/* if the Power_CHT_Timer is set then wait for it to timeout, then power up CHT */
		530	{
		531	if ((Power_CHT_Timer > 0) && (HAL_GetTick() > Power_CHT_Timer))
18	mjames	532	{
21	mjames	533	EnableCHT(ENABLE);
19	mjames	534	Power_CHT_Timer = 0;
18	mjames	535	}
19	mjames	536	}
13	mjames	537
19	mjames	538	// check to see if we have any incoming data, copy and append if so, if no data then create our own frames.
		539	int c;
		540	char send = 0;
13	mjames	541
19	mjames	542	// poll the input for a stop bit or timeout
		543	if (PollSerial(&uc1))
		544	{
		545	c = GetCharSerial(&uc1);
		546	if (c != PLX_Stop)
		547	{
		548	PutCharSerial(&uc1, c); // echo all but the stop bit
18	mjames	549	}
19	mjames	550	else
		551	{ // must be a stop character
		552	send = 1; // start our sending process.
		553	}
		554	}
16	mjames	555
19	mjames	556	// sort out auto-sending
		557	if (TimerFlag)
		558	{
		559	TimerFlag = 0;
		560	if (NoSerialIn)
		561	{
		562	PutCharSerial(&uc1, PLX_Start);
		563	send = 1;
18	mjames	564	}
19	mjames	565	}
		566	if (send)
		567	{
		568	send = 0;
18	mjames	569
19	mjames	570	uint16_t val;
		571	val = __HAL_TIM_GET_COMPARE(&htim2,TIM_CHANNEL_1);
		572	PutCharSerial(&uc2, (val & 31) + 32);
18	mjames	573
19	mjames	574	// send the observations
		575	ProcessRPM(0);
		576	ProcessCHT(0);
18	mjames	577	// ProcessCHT(1);
19	mjames	578	ProcessBatteryVoltage(0); // Batt 1
		579	ProcessBatteryVoltage(1); // Batt 2
		580	ProcessCPUTemperature(0); // built in temperature sensor
18	mjames	581
19	mjames	582	ProcessMAP(0);
		583	ProcessOilPress(0);
18	mjames	584
19	mjames	585	PutCharSerial(&uc1, PLX_Stop);
9	mjames	586	}
		587	}
20	mjames	588	/* USER CODE END 3 */
		589
2	mjames	590	}
20	mjames	591
2	mjames	592	/** System Clock Configuration
20	mjames	593	*/
2	mjames	594	void SystemClock_Config(void)
		595	{
		596
20	mjames	597	RCC_OscInitTypeDef RCC_OscInitStruct;
		598	RCC_ClkInitTypeDef RCC_ClkInitStruct;
2	mjames	599
20	mjames	600	__HAL_RCC_PWR_CLK_ENABLE();
2	mjames	601
20	mjames	602	__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
2	mjames	603
20	mjames	604	RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
		605	RCC_OscInitStruct.HSIState = RCC_HSI_ON;
		606	RCC_OscInitStruct.HSICalibrationValue = 16;
		607	RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
		608	RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
		609	RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL6;
		610	RCC_OscInitStruct.PLL.PLLDIV = RCC_PLL_DIV3;
		611	if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
		612	{
		613	Error_Handler();
		614	}
2	mjames	615
20	mjames	616	RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK\|RCC_CLOCKTYPE_SYSCLK
		617	\|RCC_CLOCKTYPE_PCLK1\|RCC_CLOCKTYPE_PCLK2;
		618	RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
		619	RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
		620	RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
		621	RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
		622	if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
		623	{
		624	Error_Handler();
		625	}
2	mjames	626
20	mjames	627	HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
2	mjames	628
20	mjames	629	HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
2	mjames	630
20	mjames	631	/* SysTick_IRQn interrupt configuration */
		632	HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
2	mjames	633	}
		634
		635	/* ADC init function */
		636	static void MX_ADC_Init(void)
		637	{
		638
20	mjames	639	ADC_ChannelConfTypeDef sConfig;
2	mjames	640
20	mjames	641	/**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
		642	*/
		643	hadc.Instance = ADC1;
		644	hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
		645	hadc.Init.Resolution = ADC_RESOLUTION_12B;
		646	hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
		647	hadc.Init.ScanConvMode = ADC_SCAN_ENABLE;
		648	hadc.Init.EOCSelection = ADC_EOC_SEQ_CONV;
		649	hadc.Init.LowPowerAutoWait = ADC_AUTOWAIT_DISABLE;
		650	hadc.Init.LowPowerAutoPowerOff = ADC_AUTOPOWEROFF_DISABLE;
		651	hadc.Init.ChannelsBank = ADC_CHANNELS_BANK_A;
		652	hadc.Init.ContinuousConvMode = DISABLE;
		653	hadc.Init.NbrOfConversion = 6;
		654	hadc.Init.DiscontinuousConvMode = DISABLE;
		655	hadc.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T6_TRGO;
		656	hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
		657	hadc.Init.DMAContinuousRequests = ENABLE;
		658	if (HAL_ADC_Init(&hadc) != HAL_OK)
		659	{
		660	Error_Handler();
		661	}
2	mjames	662
20	mjames	663	/**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
		664	*/
		665	sConfig.Channel = ADC_CHANNEL_10;
		666	sConfig.Rank = 1;
		667	sConfig.SamplingTime = ADC_SAMPLETIME_384CYCLES;
		668	if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
		669	{
		670	Error_Handler();
		671	}
2	mjames	672
20	mjames	673	/**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
		674	*/
		675	sConfig.Channel = ADC_CHANNEL_11;
		676	sConfig.Rank = 2;
		677	if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
		678	{
		679	Error_Handler();
		680	}
2	mjames	681
20	mjames	682	/**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
		683	*/
		684	sConfig.Channel = ADC_CHANNEL_12;
		685	sConfig.Rank = 3;
		686	if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
		687	{
		688	Error_Handler();
		689	}
2	mjames	690
20	mjames	691	/**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
		692	*/
		693	sConfig.Channel = ADC_CHANNEL_13;
		694	sConfig.Rank = 4;
		695	if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
		696	{
		697	Error_Handler();
		698	}
2	mjames	699
20	mjames	700	/**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
		701	*/
		702	sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
		703	sConfig.Rank = 5;
		704	if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
		705	{
		706	Error_Handler();
		707	}
2	mjames	708
20	mjames	709	/**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
		710	*/
		711	sConfig.Channel = ADC_CHANNEL_VREFINT;
		712	sConfig.Rank = 6;
		713	if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
		714	{
		715	Error_Handler();
		716	}
2	mjames	717
		718	}
		719
		720	/* SPI1 init function */
		721	static void MX_SPI1_Init(void)
		722	{
		723
20	mjames	724	hspi1.Instance = SPI1;
		725	hspi1.Init.Mode = SPI_MODE_MASTER;
		726	hspi1.Init.Direction = SPI_DIRECTION_2LINES;
		727	hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
		728	hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
21	mjames	729	hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
20	mjames	730	hspi1.Init.NSS = SPI_NSS_SOFT;
		731	hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_64;
		732	hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
		733	hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
		734	hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
		735	hspi1.Init.CRCPolynomial = 10;
		736	if (HAL_SPI_Init(&hspi1) != HAL_OK)
		737	{
		738	Error_Handler();
		739	}
2	mjames	740
		741	}
		742
		743	/* TIM2 init function */
		744	static void MX_TIM2_Init(void)
		745	{
		746
20	mjames	747	TIM_ClockConfigTypeDef sClockSourceConfig;
		748	TIM_MasterConfigTypeDef sMasterConfig;
		749	TIM_IC_InitTypeDef sConfigIC;
2	mjames	750
20	mjames	751	htim2.Instance = TIM2;
		752	htim2.Init.Prescaler = 320;
		753	htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
		754	htim2.Init.Period = 65535;
		755	htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
		756	if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
		757	{
		758	Error_Handler();
		759	}
12	mjames	760
20	mjames	761	sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
		762	if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
		763	{
		764	Error_Handler();
		765	}
12	mjames	766
20	mjames	767	if (HAL_TIM_IC_Init(&htim2) != HAL_OK)
		768	{
		769	Error_Handler();
		770	}
2	mjames	771
20	mjames	772	sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
		773	sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
		774	if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
		775	{
		776	Error_Handler();
		777	}
2	mjames	778
20	mjames	779	sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_RISING;
		780	sConfigIC.ICSelection = TIM_ICSELECTION_DIRECTTI;
		781	sConfigIC.ICPrescaler = TIM_ICPSC_DIV1;
		782	sConfigIC.ICFilter = 0;
		783	if (HAL_TIM_IC_ConfigChannel(&htim2, &sConfigIC, TIM_CHANNEL_1) != HAL_OK)
		784	{
		785	Error_Handler();
		786	}
2	mjames	787
		788	}
		789
		790	/* TIM6 init function */
		791	static void MX_TIM6_Init(void)
		792	{
		793
20	mjames	794	TIM_MasterConfigTypeDef sMasterConfig;
2	mjames	795
20	mjames	796	htim6.Instance = TIM6;
		797	htim6.Init.Prescaler = 320;
		798	htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
		799	htim6.Init.Period = 9999;
		800	if (HAL_TIM_Base_Init(&htim6) != HAL_OK)
		801	{
		802	Error_Handler();
		803	}
2	mjames	804
20	mjames	805	sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
		806	sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
		807	if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK)
		808	{
		809	Error_Handler();
		810	}
2	mjames	811
		812	}
		813
		814	/* USART1 init function */
		815	static void MX_USART1_UART_Init(void)
		816	{
		817
20	mjames	818	huart1.Instance = USART1;
		819	huart1.Init.BaudRate = 19200;
		820	huart1.Init.WordLength = UART_WORDLENGTH_8B;
		821	huart1.Init.StopBits = UART_STOPBITS_1;
		822	huart1.Init.Parity = UART_PARITY_NONE;
		823	huart1.Init.Mode = UART_MODE_TX_RX;
		824	huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
		825	huart1.Init.OverSampling = UART_OVERSAMPLING_16;
		826	if (HAL_UART_Init(&huart1) != HAL_OK)
		827	{
		828	Error_Handler();
		829	}
2	mjames	830
		831	}
		832
6	mjames	833	/* USART2 init function */
		834	static void MX_USART2_UART_Init(void)
		835	{
		836
20	mjames	837	huart2.Instance = USART2;
		838	huart2.Init.BaudRate = 115200;
		839	huart2.Init.WordLength = UART_WORDLENGTH_8B;
		840	huart2.Init.StopBits = UART_STOPBITS_1;
		841	huart2.Init.Parity = UART_PARITY_NONE;
		842	huart2.Init.Mode = UART_MODE_TX_RX;
		843	huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
		844	huart2.Init.OverSampling = UART_OVERSAMPLING_16;
		845	if (HAL_UART_Init(&huart2) != HAL_OK)
		846	{
		847	Error_Handler();
		848	}
6	mjames	849
		850	}
		851
		852	/**
20	mjames	853	* Enable DMA controller clock
		854	*/
		855	static void MX_DMA_Init(void)
6	mjames	856	{
20	mjames	857	/* DMA controller clock enable */
		858	__HAL_RCC_DMA1_CLK_ENABLE();
6	mjames	859
20	mjames	860	/* DMA interrupt init */
		861	/* DMA1_Channel1_IRQn interrupt configuration */
		862	HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);
		863	HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);
6	mjames	864
		865	}
		866
2	mjames	867	/** Configure pins as
20	mjames	868	* Analog
		869	* Input
		870	* Output
		871	* EVENT_OUT
		872	* EXTI
		873	* Free pins are configured automatically as Analog (this feature is enabled through
		874	* the Code Generation settings)
		875	*/
2	mjames	876	static void MX_GPIO_Init(void)
		877	{
		878
20	mjames	879	GPIO_InitTypeDef GPIO_InitStruct;
2	mjames	880
20	mjames	881	/* GPIO Ports Clock Enable */
		882	__HAL_RCC_GPIOC_CLK_ENABLE();
		883	__HAL_RCC_GPIOH_CLK_ENABLE();
		884	__HAL_RCC_GPIOA_CLK_ENABLE();
		885	__HAL_RCC_GPIOB_CLK_ENABLE();
		886	__HAL_RCC_GPIOD_CLK_ENABLE();
2	mjames	887
20	mjames	888	/*Configure GPIO pins : PC13 PC14 PC15 PC6
		889	PC7 PC8 PC9 PC11
		890	PC12 */
		891	GPIO_InitStruct.Pin = GPIO_PIN_13\|GPIO_PIN_14\|GPIO_PIN_15\|GPIO_PIN_6
		892	\|GPIO_PIN_7\|GPIO_PIN_8\|GPIO_PIN_9\|GPIO_PIN_11
		893	\|GPIO_PIN_12;
		894	GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
		895	GPIO_InitStruct.Pull = GPIO_NOPULL;
		896	HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
2	mjames	897
20	mjames	898	/Configure GPIO pins : PH0 PH1 /
		899	GPIO_InitStruct.Pin = GPIO_PIN_0\|GPIO_PIN_1;
		900	GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
		901	GPIO_InitStruct.Pull = GPIO_NOPULL;
		902	HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);
3	mjames	903
20	mjames	904	/*Configure GPIO pins : PA0 PA1 PA8 PA11
		905	PA12 */
		906	GPIO_InitStruct.Pin = GPIO_PIN_0\|GPIO_PIN_1\|GPIO_PIN_8\|GPIO_PIN_11
		907	\|GPIO_PIN_12;
		908	GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
		909	GPIO_InitStruct.Pull = GPIO_NOPULL;
		910	HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
6	mjames	911
20	mjames	912	/Configure GPIO pin : LED_Blink_Pin /
		913	GPIO_InitStruct.Pin = LED_Blink_Pin;
		914	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
		915	GPIO_InitStruct.Pull = GPIO_NOPULL;
		916	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
		917	HAL_GPIO_Init(LED_Blink_GPIO_Port, &GPIO_InitStruct);
2	mjames	918
20	mjames	919	/Configure GPIO pins : SPI_NSS1_Pin SPI1CD_Pin /
		920	GPIO_InitStruct.Pin = SPI_NSS1_Pin\|SPI1CD_Pin;
		921	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
		922	GPIO_InitStruct.Pull = GPIO_NOPULL;
		923	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
		924	HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
3	mjames	925
20	mjames	926	/Configure GPIO pins : SPI_RESET_Pin SPI_NS_Temp_Pin SPI_NS_Temp2_Pin ENA_AUX_5V_Pin /
		927	GPIO_InitStruct.Pin = SPI_RESET_Pin\|SPI_NS_Temp_Pin\|SPI_NS_Temp2_Pin\|ENA_AUX_5V_Pin;
		928	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
		929	GPIO_InitStruct.Pull = GPIO_NOPULL;
		930	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
		931	HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
3	mjames	932
20	mjames	933	/*Configure GPIO pins : PB11 PB12 PB13 PB14
		934	PB15 PB3 PB4 PB5
		935	PB6 PB7 PB8 PB9 */
		936	GPIO_InitStruct.Pin = GPIO_PIN_11\|GPIO_PIN_12\|GPIO_PIN_13\|GPIO_PIN_14
		937	\|GPIO_PIN_15\|GPIO_PIN_3\|GPIO_PIN_4\|GPIO_PIN_5
		938	\|GPIO_PIN_6\|GPIO_PIN_7\|GPIO_PIN_8\|GPIO_PIN_9;
		939	GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
		940	GPIO_InitStruct.Pull = GPIO_NOPULL;
		941	HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
5	mjames	942
20	mjames	943	/Configure GPIO pin : STARTER_ON_Pin /
		944	GPIO_InitStruct.Pin = STARTER_ON_Pin;
		945	GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
		946	GPIO_InitStruct.Pull = GPIO_NOPULL;
		947	HAL_GPIO_Init(STARTER_ON_GPIO_Port, &GPIO_InitStruct);
18	mjames	948
20	mjames	949	/Configure GPIO pin : PD2 /
		950	GPIO_InitStruct.Pin = GPIO_PIN_2;
		951	GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
		952	GPIO_InitStruct.Pull = GPIO_NOPULL;
		953	HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
5	mjames	954
20	mjames	955	/Configure GPIO pin Output Level /
		956	HAL_GPIO_WritePin(LED_Blink_GPIO_Port, LED_Blink_Pin, GPIO_PIN_RESET);
5	mjames	957
20	mjames	958	/Configure GPIO pin Output Level /
		959	HAL_GPIO_WritePin(SPI_NSS1_GPIO_Port, SPI_NSS1_Pin, GPIO_PIN_SET);
5	mjames	960
20	mjames	961	/Configure GPIO pin Output Level /
		962	HAL_GPIO_WritePin(SPI1CD_GPIO_Port, SPI1CD_Pin, GPIO_PIN_RESET);
7	mjames	963
20	mjames	964	/Configure GPIO pin Output Level /
		965	HAL_GPIO_WritePin(GPIOB, SPI_RESET_Pin\|SPI_NS_Temp2_Pin\|ENA_AUX_5V_Pin, GPIO_PIN_RESET);
5	mjames	966
20	mjames	967	/Configure GPIO pin Output Level /
		968	HAL_GPIO_WritePin(SPI_NS_Temp_GPIO_Port, SPI_NS_Temp_Pin, GPIO_PIN_SET);
7	mjames	969
2	mjames	970	}
		971
		972	/* USER CODE BEGIN 4 */
		973
		974	/* USER CODE END 4 */
		975
		976	/**
20	mjames	977	* @brief This function is executed in case of error occurrence.
		978	* @param None
		979	* @retval None
		980	*/
2	mjames	981	void Error_Handler(void)
		982	{
20	mjames	983	/* USER CODE BEGIN Error_Handler */
9	mjames	984	/* User can add his own implementation to report the HAL error return state */
19	mjames	985	while (1)
		986	{
9	mjames	987	}
20	mjames	988	/* USER CODE END Error_Handler */
2	mjames	989	}
		990
		991	#ifdef USE_FULL_ASSERT
		992
		993	/**
20	mjames	994	* @brief Reports the name of the source file and the source line number
		995	* where the assert_param error has occurred.
		996	* @param file: pointer to the source file name
		997	* @param line: assert_param error line source number
		998	* @retval None
		999	*/
2	mjames	1000	void assert_failed(uint8_t* file, uint32_t line)
		1001	{
20	mjames	1002	/* USER CODE BEGIN 6 */
9	mjames	1003	/* User can add his own implementation to report the file name and line number,
		1004	ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
20	mjames	1005	/* USER CODE END 6 */
2	mjames	1006
		1007	}
		1008
		1009	#endif
		1010
		1011	/**
20	mjames	1012	* @}
		1013	*/
2	mjames	1014
		1015	/**
20	mjames	1016	* @}
		1017	*/
2	mjames	1018
		1019	/********************** (C) COPYRIGHT STMicroelectronics *END OF FILE**/

Subversion Repositories EngineBay2

(root)/trunk/Src/main.c – Rev 23