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
|
/*
ChibiOS - Copyright (C) 2006..2015 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 "ch.h"
#include "hal.h"
#define ADC_GRP1_NUM_CHANNELS 1
#define ADC_GRP1_BUF_DEPTH 8
#define ADC_GRP2_NUM_CHANNELS 1
#define ADC_GRP2_BUF_DEPTH 32
static adcsample_t samples1[ADC_GRP1_NUM_CHANNELS * ADC_GRP1_BUF_DEPTH];
static adcsample_t samples2[ADC_GRP2_NUM_CHANNELS * ADC_GRP2_BUF_DEPTH];
/*
* ADC streaming callback.
*/
size_t nx = 0, ny = 0;
static void adccallback(ADCDriver *adcp, adcsample_t *buffer, size_t n) {
(void)adcp;
if (samples2 == buffer) {
nx += n;
}
else {
ny += n;
}
}
static void adcerrorcallback(ADCDriver *adcp, adcerror_t err) {
(void)adcp;
(void)err;
}
/*
* SDADC configuration.
*/
static const ADCConfig sdadc_config = {
0,
{
SDADC_CONFR_GAIN_1X | SDADC_CONFR_SE_ZERO_VOLT | SDADC_CONFR_COMMON_VSSSD,
0,
0
}
};
/*
* ADC conversion group.
* Mode: Linear buffer, 8 samples of 1 channel, SW triggered.
* Channels: ADC_IN5P.
*/
static const ADCConversionGroup adcgrpcfg1 = {
FALSE,
ADC_GRP1_NUM_CHANNELS,
NULL,
adcerrorcallback,
.u.sdadc = {
SDADC_CR2_JSWSTART, /* CR2 */
SDADC_JCHGR_CH(5), /* JCHGR */
{ /* CONFCHR[2]*/
SDADC_CONFCHR1_CH5(0),
0
}
}
};
/*
* ADC conversion group.
* Mode: Continuous, 32 samples of 1 channel, SW triggered.
* Channels: ADC_IN5P.
*/
static const ADCConversionGroup adcgrpcfg2 = {
TRUE,
ADC_GRP2_NUM_CHANNELS,
adccallback,
adcerrorcallback,
.u.sdadc = {
SDADC_CR2_JSWSTART, /* CR2 */
SDADC_JCHGR_CH(5), /* JCHGR */
{ /* CONFCHR[2]*/
SDADC_CONFCHR1_CH5(0),
0
}
}
};
/*
* Red LEDs blinker thread, times are in milliseconds.
*/
static THD_WORKING_AREA(waThread1, 128);
static THD_FUNCTION(Thread1, arg) {
(void)arg;
chRegSetThreadName("blinker");
while (true) {
palClearPad(GPIOC, GPIOC_LED1);
chThdSleepMilliseconds(500);
palSetPad(GPIOC, GPIOC_LED1);
chThdSleepMilliseconds(500);
}
}
/*
* Application entry point.
*/
int main(void) {
/*
* 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, Thread1, NULL);
/*
* Activates the SDADC1 driver.
*/
adcStart(&SDADCD1, &sdadc_config);
adcSTM32Calibrate(&SDADCD1);
/*
* Linear conversion.
*/
adcConvert(&SDADCD1, &adcgrpcfg1, samples1, ADC_GRP1_BUF_DEPTH);
/*
* Starts an ADC continuous conversion.
*/
adcStartConversion(&SDADCD1, &adcgrpcfg2, samples2, ADC_GRP2_BUF_DEPTH);
/*
* Normal main() thread activity, in this demo it does nothing.
*/
while (true) {
if (palReadPad(GPIOA, GPIOA_WKUP_BUTTON)) {
adcStopConversion(&SDADCD1);
}
chThdSleepMilliseconds(500);
}
}
|
