aboutsummaryrefslogtreecommitdiffstats
path: root/testhal/STM32F4xx/DMA_STORM/main.c
blob: a3193fcc1e382690614d8d4389657776e6d151d5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
/*
    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/

#include <string.h>

#include "ch.h"
#include "hal.h"

#define ADC_GRP2_NUM_CHANNELS   8
#define ADC_GRP2_BUF_DEPTH      16

static adcsample_t samples2[ADC_GRP2_NUM_CHANNELS * ADC_GRP2_BUF_DEPTH];

static void adccallback(ADCDriver *adcp, adcsample_t *buffer, size_t n) {

  (void)adcp;
  (void)buffer;
  (void)n;
}

static void adcerrorcallback(ADCDriver *adcp, adcerror_t err) {

  (void)adcp;
  (void)err;
  chSysHalt();
}

/*
 * ADC conversion group.
 * Mode:        Continuous, 16 samples of 8 channels, SW triggered.
 * Channels:    IN11, IN12, IN11, IN12, IN11, IN12, Sensor, VRef.
 */
static const ADCConversionGroup adcgrpcfg2 = {
  TRUE,
  ADC_GRP2_NUM_CHANNELS,
  adccallback,
  adcerrorcallback,
  0,                        /* CR1 */
  ADC_CR2_SWSTART,          /* CR2 */
  ADC_SMPR1_SMP_AN12(ADC_SAMPLE_56) | ADC_SMPR1_SMP_AN11(ADC_SAMPLE_56) |
  ADC_SMPR1_SMP_SENSOR(ADC_SAMPLE_144) | ADC_SMPR1_SMP_VREF(ADC_SAMPLE_144),
  0,                        /* SMPR2 */
  ADC_SQR1_NUM_CH(ADC_GRP2_NUM_CHANNELS),
  ADC_SQR2_SQ8_N(ADC_CHANNEL_SENSOR) | ADC_SQR2_SQ7_N(ADC_CHANNEL_VREFINT),
  ADC_SQR3_SQ6_N(ADC_CHANNEL_IN12)   | ADC_SQR3_SQ5_N(ADC_CHANNEL_IN11) |
  ADC_SQR3_SQ4_N(ADC_CHANNEL_IN12)   | ADC_SQR3_SQ3_N(ADC_CHANNEL_IN11) |
  ADC_SQR3_SQ2_N(ADC_CHANNEL_IN12)   | ADC_SQR3_SQ1_N(ADC_CHANNEL_IN11)
};

/*
 * Maximum speed SPI configuration (21MHz, CPHA=0, CPOL=0, MSb first).
 */
static const SPIConfig hs_spicfg = {
  NULL,
  GPIOB,
  12,
  0
};

static void tmo(void *p) {

  (void)p;
  chSysHalt();
}

/*
 * SPI thread.
 */
static WORKING_AREA(waSPI1, 1024);
static WORKING_AREA(waSPI2, 1024);
static WORKING_AREA(waSPI3, 1024);
static msg_t spi_thread(void *p) {
  unsigned i;
  SPIDriver *spip = (SPIDriver *)p;
  VirtualTimer vt;
  uint8_t txbuf[256];
  uint8_t rxbuf[256];

  /* Prepare transmit pattern.*/
  for (i = 0; i < sizeof(txbuf); i++)
    txbuf[i] = (uint8_t)i;

  /* Continuous transmission.*/
  while (TRUE) {
    /* Starts a VT working as watchdog to catch a malfunction in the SPI
       driver.*/
    chSysLock();
    chVTSetI(&vt, MS2ST(10), tmo, NULL);
    chSysUnlock();

    spiExchange(spip, sizeof(txbuf), txbuf, rxbuf);

    /* Stops the watchdog.*/
    chSysLock();
    if (chVTIsArmedI(&vt))
      chVTResetI(&vt);
    chSysUnlock();
  }
}

/*
 * This is a periodic thread that does absolutely nothing except flashing
 * a LED.
 */
static WORKING_AREA(waThread1, 128);
static msg_t Thread1(void *arg) {

  (void)arg;
  chRegSetThreadName("blinker");
  while (TRUE) {
    palSetPad(GPIOD, GPIOD_LED3);       /* Orange.  */
    chThdSleepMilliseconds(500);
    palClearPad(GPIOD, GPIOD_LED3);     /* Orange.  */
    chThdSleepMilliseconds(500);
  }
}

/*
 * Application entry point.
 */
int main(void) {
  unsigned i;
  static uint8_t patterns1[4096], patterns2[4096], buf1[4096], buf2[4096];

  /* System initializations.
     - HAL initialization, this also initializes the configured device drivers
       and performs the board-specific initializations.
     - Kernel initialization, the main() function becomes a thread and the
       RTOS is active.*/
  halInit();
  chSysInit();

  /* Creates the blinker thread.*/
  chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO + 10,
                    Thread1, NULL);

  /* Activates the ADC1 driver and the temperature sensor.*/
  adcStart(&ADCD1, NULL);
  adcSTM32EnableTSVREFE();

  /* Starts an ADC continuous conversion.*/
  adcStartConversion(&ADCD1, &adcgrpcfg2, samples2, ADC_GRP2_BUF_DEPTH);

  /* Activating SPI drivers.*/
  spiStart(&SPID1, &hs_spicfg);
  spiStart(&SPID2, &hs_spicfg);
  spiStart(&SPID3, &hs_spicfg);

  /* Starting SPI threads instances.*/
  chThdCreateStatic(waSPI1, sizeof(waSPI1), NORMALPRIO + 1, spi_thread, &SPID1);
  chThdCreateStatic(waSPI2, sizeof(waSPI2), NORMALPRIO + 1, spi_thread, &SPID2);
  chThdCreateStatic(waSPI3, sizeof(waSPI3), NORMALPRIO + 1, spi_thread, &SPID3);

  /* Allocating two DMA2 streams for memory copy operations.*/
  if (dmaStreamAllocate(STM32_DMA2_STREAM6, 0, NULL, NULL))
    chSysHalt();
  if (dmaStreamAllocate(STM32_DMA2_STREAM7, 0, NULL, NULL))
    chSysHalt();
  for (i = 0; i < sizeof (patterns1); i++)
    patterns1[i] = (uint8_t)i;
  for (i = 0; i < sizeof (patterns2); i++)
    patterns2[i] = (uint8_t)(i ^ 0xAA);

  /* Normal main() thread activity, it does continues memory copy operations
     using 2 DMA streams at the lowest priority.*/
  while (TRUE) {
    VirtualTimer vt;

    /* Starts a VT working as watchdog to catch a malfunction in the DMA
       driver.*/
    chSysLock();
    chVTSetI(&vt, MS2ST(10), tmo, NULL);
    chSysUnlock();

    /* Copy pattern 1.*/
    dmaStartMemCopy(STM32_DMA2_STREAM6,
                    STM32_DMA_CR_PL(0) | STM32_DMA_CR_PSIZE_BYTE |
                                         STM32_DMA_CR_MSIZE_BYTE,
                    patterns1, buf1, sizeof (patterns1));
    dmaStartMemCopy(STM32_DMA2_STREAM7,
                    STM32_DMA_CR_PL(0) | STM32_DMA_CR_PSIZE_BYTE |
                                         STM32_DMA_CR_MSIZE_BYTE,
                    patterns1, buf2, sizeof (patterns1));
    dmaWaitCompletion(STM32_DMA2_STREAM6);
    dmaWaitCompletion(STM32_DMA2_STREAM7);
    if (memcmp(patterns1, buf1, sizeof (patterns1)))
      chSysHalt();
    if (memcmp(patterns1, buf2, sizeof (patterns1)))
      chSysHalt();

    /* Copy pattern 2.*/
    dmaStartMemCopy(STM32_DMA2_STREAM6,
                    STM32_DMA_CR_PL(0) | STM32_DMA_CR_PSIZE_BYTE |
                                         STM32_DMA_CR_MSIZE_BYTE,
                    patterns2, buf1, sizeof (patterns2));
    dmaStartMemCopy(STM32_DMA2_STREAM7,
                    STM32_DMA_CR_PL(0) | STM32_DMA_CR_PSIZE_BYTE |
                                         STM32_DMA_CR_MSIZE_BYTE,
                    patterns2, buf2, sizeof (patterns2));
    dmaWaitCompletion(STM32_DMA2_STREAM6);
    dmaWaitCompletion(STM32_DMA2_STREAM7);
    if (memcmp(patterns2, buf1, sizeof (patterns2)))
      chSysHalt();
    if (memcmp(patterns2, buf2, sizeof (patterns2)))
      chSysHalt();

    /* Stops the watchdog.*/
    chSysLock();
    if (chVTIsArmedI(&vt))
      chVTResetI(&vt);
    chSysUnlock();

    chThdSleepMilliseconds(2);
  }
  return 0;
}