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
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
|
/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-12-05 zylx first version
* 2018-12-12 greedyhao Porting for stm32f7xx
* 2019-02-01 yuneizhilin fix the stm32_adc_init function initialization issue
* 2020-06-17 thread-liu Porting for stm32mp1xx
* 2020-10-14 Dozingfiretruck Porting for stm32wbxx
* 2022-05-22 Stanley Lwin Add stm32_adc_get_vref
* 2022-12-26 wdfk-prog Change the order of configuration channels and calibration functions
*/
#include <board.h>
#if defined(BSP_USING_ADC1) || defined(BSP_USING_ADC2) || defined(BSP_USING_ADC3)
#include "drv_config.h"
//#define DRV_DEBUG
#define LOG_TAG "drv.adc"
#include <drv_log.h>
static ADC_HandleTypeDef adc_config[] =
{
#ifdef BSP_USING_ADC1
ADC1_CONFIG,
#endif
#ifdef BSP_USING_ADC2
ADC2_CONFIG,
#endif
#ifdef BSP_USING_ADC3
ADC3_CONFIG,
#endif
};
struct stm32_adc
{
ADC_HandleTypeDef ADC_Handler;
struct rt_adc_device stm32_adc_device;
};
static struct stm32_adc stm32_adc_obj[sizeof(adc_config) / sizeof(adc_config[0])];
static rt_uint32_t stm32_adc_get_channel(rt_uint32_t channel);
static rt_err_t stm32_adc_enabled(struct rt_adc_device *device, rt_uint32_t channel, rt_bool_t enabled)
{
ADC_HandleTypeDef *stm32_adc_handler;
RT_ASSERT(device != RT_NULL);
stm32_adc_handler = device->parent.user_data;
if (enabled)
{
ADC_ChannelConfTypeDef ADC_ChanConf;
rt_memset(&ADC_ChanConf, 0, sizeof(ADC_ChanConf));
#ifndef ADC_CHANNEL_16
if (channel == 16)
{
LOG_E("ADC channel must not be 16.");
return -RT_ERROR;
}
#endif
/* ADC channel number is up to 17 */
#if !defined(ADC_CHANNEL_18)
if (channel <= 17 || (
#ifdef ADC_CHANNEL_VREFINT
channel != (ADC_CHANNEL_VREFINT - ADC_CHANNEL_0)
#endif /* ADC_CHANNEL_VREFINT */
#ifdef ADC_CHANNEL_TEMPSENSOR
|| channel != (ADC_CHANNEL_TEMPSENSOR - ADC_CHANNEL_0)
#endif /* ADC_CHANNEL_TEMPSENSOR */
#ifdef ADC_CHANNEL_VBAT
|| channel != (ADC_CHANNEL_VBAT - ADC_CHANNEL_0)
#endif /* ADC_CHANNEL_VBAT */
))
/* ADC channel number is up to 19 */
#elif defined(ADC_CHANNEL_19)
if (channel <= 19 || (
#ifdef ADC_CHANNEL_VREFINT
channel != (ADC_CHANNEL_VREFINT - ADC_CHANNEL_0)
#endif /* ADC_CHANNEL_VREFINT */
#ifndef ADC_CHANNEL_TEMPSENSOR
|| channel != (ADC_CHANNEL_TEMPSENSOR - ADC_CHANNEL_0)
#endif /* ADC_CHANNEL_TEMPSENSOR */
#ifdef ADC_CHANNEL_VBAT
|| channel != (=ADC_CHANNEL_VBAT - ADC_CHANNEL_0)
#endif /* ADC_CHANNEL_VBAT */
))
/* ADC channel number is up to 18 */
#else
if (channel <= 18 || (
#ifdef ADC_CHANNEL_VREFINT
channel != (ADC_CHANNEL_VREFINT - ADC_CHANNEL_0)
#endif /* ADC_CHANNEL_VREFINT */
#ifdef ADC_CHANNEL_TEMPSENSOR
|| channel != (ADC_CHANNEL_TEMPSENSOR - ADC_CHANNEL_0)
#endif /* ADC_CHANNEL_TEMPSENSOR */
#ifdef ADC_CHANNEL_VBAT
|| channel != (ADC_CHANNEL_VBAT - ADC_CHANNEL_0)
#endif /* ADC_CHANNEL_VBAT */
))
#endif /* !defined(ADC_CHANNEL_18) */
{
/* set stm32 ADC channel */
ADC_ChanConf.Channel = stm32_adc_get_channel(channel);
}
else
{
#if !defined(ADC_CHANNEL_18)
LOG_E("ADC channel must be between 0 and 17.");
#elif defined(ADC_CHANNEL_19)
LOG_E("ADC channel must be between 0 and 19.");
#else
LOG_E("ADC channel must be between 0 and 18.");
#endif /* !defined(ADC_CHANNEL_18) */
return -RT_ERROR;
}
#if defined(SOC_SERIES_STM32MP1) || defined (SOC_SERIES_STM32H7) || defined (SOC_SERIES_STM32WB)
ADC_ChanConf.Rank = ADC_REGULAR_RANK_1;
#else
ADC_ChanConf.Rank = 1;
#endif
#if defined(SOC_SERIES_STM32F0)
ADC_ChanConf.SamplingTime = ADC_SAMPLETIME_71CYCLES_5;
#elif defined(SOC_SERIES_STM32F1)
ADC_ChanConf.SamplingTime = ADC_SAMPLETIME_55CYCLES_5;
#elif defined(SOC_SERIES_STM32F2) || defined(SOC_SERIES_STM32F4) || defined(SOC_SERIES_STM32F7)
ADC_ChanConf.SamplingTime = ADC_SAMPLETIME_112CYCLES;
#elif defined(SOC_SERIES_STM32L4)
ADC_ChanConf.SamplingTime = ADC_SAMPLETIME_247CYCLES_5;
#elif defined(SOC_SERIES_STM32MP1)
ADC_ChanConf.SamplingTime = ADC_SAMPLETIME_810CYCLES_5;
#elif defined(SOC_SERIES_STM32H7)
ADC_ChanConf.SamplingTime = ADC_SAMPLETIME_810CYCLES_5;
#elif defined (SOC_SERIES_STM32WB)
ADC_ChanConf.SamplingTime = ADC_SAMPLETIME_2CYCLES_5;
#endif
#if defined(SOC_SERIES_STM32F2) || defined(SOC_SERIES_STM32F4) || defined(SOC_SERIES_STM32F7) || defined(SOC_SERIES_STM32L4) || defined (SOC_SERIES_STM32WB)
ADC_ChanConf.Offset = 0;
#endif
#if defined(SOC_SERIES_STM32L4)
ADC_ChanConf.OffsetNumber = ADC_OFFSET_NONE;
ADC_ChanConf.SingleDiff = LL_ADC_SINGLE_ENDED;
#elif defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7) || defined (SOC_SERIES_STM32WB)
ADC_ChanConf.OffsetNumber = ADC_OFFSET_NONE; /* ADC channel affected to offset number */
ADC_ChanConf.Offset = 0;
ADC_ChanConf.SingleDiff = ADC_SINGLE_ENDED; /* ADC channel differential mode */
#endif
if(HAL_ADC_ConfigChannel(stm32_adc_handler, &ADC_ChanConf) != HAL_OK)
{
LOG_E("Failed to configure ADC channel %d", channel);
}
/* perform an automatic ADC calibration to improve the conversion accuracy */
#if defined(SOC_SERIES_STM32L4) || defined (SOC_SERIES_STM32WB)
if (HAL_ADCEx_Calibration_Start(stm32_adc_handler, ADC_ChanConf.SingleDiff) != HAL_OK)
{
LOG_E("ADC calibration error!\n");
return -RT_ERROR;
}
#elif defined(SOC_SERIES_STM32MP1) || defined(SOC_SERIES_STM32H7)
/* Run the ADC linear calibration in single-ended mode */
if (HAL_ADCEx_Calibration_Start(stm32_adc_handler, ADC_CALIB_OFFSET_LINEARITY, ADC_ChanConf.SingleDiff) != HAL_OK)
{
LOG_E("ADC open linear calibration error!\n");
/* Calibration Error */
return -RT_ERROR;
}
#endif
HAL_ADC_Start(stm32_adc_handler);
}
else
{
HAL_ADC_Stop(stm32_adc_handler);
}
return RT_EOK;
}
static rt_uint8_t stm32_adc_get_resolution(struct rt_adc_device *device)
{
#if defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32F3)
return 12;
#else
ADC_HandleTypeDef *stm32_adc_handler = device->parent.user_data;
RT_ASSERT(device != RT_NULL);
switch(stm32_adc_handler->Init.Resolution)
{
#ifdef SOC_SERIES_STM32H7
case ADC_RESOLUTION_16B:
return 16;
case ADC_RESOLUTION_14B:
return 14;
#endif /* SOC_SERIES_STM32H7 */
case ADC_RESOLUTION_12B:
return 12;
case ADC_RESOLUTION_10B:
return 10;
case ADC_RESOLUTION_8B:
return 8;
#ifndef SOC_SERIES_STM32H7
case ADC_RESOLUTION_6B:
return 6;
#endif /* SOC_SERIES_STM32H7 */
default:
return 0;
}
#endif /* defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32F3) */
}
static rt_uint32_t stm32_adc_get_channel(rt_uint32_t channel)
{
rt_uint32_t stm32_channel = 0;
switch (channel)
{
case 0:
stm32_channel = ADC_CHANNEL_0;
break;
case 1:
stm32_channel = ADC_CHANNEL_1;
break;
case 2:
stm32_channel = ADC_CHANNEL_2;
break;
case 3:
stm32_channel = ADC_CHANNEL_3;
break;
case 4:
stm32_channel = ADC_CHANNEL_4;
break;
case 5:
stm32_channel = ADC_CHANNEL_5;
break;
case 6:
stm32_channel = ADC_CHANNEL_6;
break;
case 7:
stm32_channel = ADC_CHANNEL_7;
break;
case 8:
stm32_channel = ADC_CHANNEL_8;
break;
case 9:
stm32_channel = ADC_CHANNEL_9;
break;
case 10:
stm32_channel = ADC_CHANNEL_10;
break;
case 11:
stm32_channel = ADC_CHANNEL_11;
break;
case 12:
stm32_channel = ADC_CHANNEL_12;
break;
case 13:
stm32_channel = ADC_CHANNEL_13;
break;
case 14:
stm32_channel = ADC_CHANNEL_14;
break;
case 15:
stm32_channel = ADC_CHANNEL_15;
break;
#ifdef ADC_CHANNEL_16
case 16:
stm32_channel = ADC_CHANNEL_16;
break;
#endif
case 17:
stm32_channel = ADC_CHANNEL_17;
break;
#ifdef ADC_CHANNEL_18
case 18:
stm32_channel = ADC_CHANNEL_18;
break;
#endif
#ifdef ADC_CHANNEL_19
case 19:
stm32_channel = ADC_CHANNEL_19;
break;
#endif
default:
switch (channel)
{
#ifdef ADC_CHANNEL_VREFINT
case ADC_CHANNEL_VREFINT - ADC_CHANNEL_0:
stm32_channel = ADC_CHANNEL_VREFINT;
break;
#endif /* ADC_CHANNEL_VREFINT */
#ifdef ADC_CHANNEL_VBAT
case ADC_CHANNEL_VBAT - ADC_CHANNEL_0:
stm32_channel = ADC_CHANNEL_VBAT;
break;
#endif /* ADC_CHANNEL_VBAT */
#ifdef ADC_CHANNEL_TEMPSENSOR
case ADC_CHANNEL_TEMPSENSOR - ADC_CHANNEL_0:
stm32_channel = ADC_CHANNEL_TEMPSENSOR;
break;
#endif /* ADC_CHANNEL_TEMPSENSOR */
}
break;
}
return stm32_channel;
}
static rt_int16_t stm32_adc_get_vref (struct rt_adc_device *device)
{
if(device == RT_NULL)
return RT_ERROR;
rt_uint16_t vref_mv;
#ifdef __LL_ADC_CALC_VREFANALOG_VOLTAGE
rt_err_t ret = RT_EOK;
rt_uint32_t vref_value;
ADC_HandleTypeDef *stm32_adc_handler = device->parent.user_data;
ret = rt_adc_enable(device, ADC_CHANNEL_VREFINT - ADC_CHANNEL_0);
vref_value = rt_adc_read(device, ADC_CHANNEL_VREFINT - ADC_CHANNEL_0);
ret = rt_adc_disable(device, ADC_CHANNEL_VREFINT - ADC_CHANNEL_0);
vref_mv = __LL_ADC_CALC_VREFANALOG_VOLTAGE(vref_value, stm32_adc_handler->Init.Resolution);
#else
vref_mv = 3300;
#endif /* __LL_ADC_CALC_VREFANALOG_VOLTAGE */
return vref_mv;
}
static rt_err_t stm32_adc_get_value(struct rt_adc_device *device, rt_uint32_t channel, rt_uint32_t *value)
{
ADC_HandleTypeDef *stm32_adc_handler;
RT_ASSERT(device != RT_NULL);
RT_ASSERT(value != RT_NULL);
stm32_adc_handler = device->parent.user_data;
/* Wait for the ADC to convert */
HAL_ADC_PollForConversion(stm32_adc_handler, 100);
/* get ADC value */
*value = (rt_uint32_t)HAL_ADC_GetValue(stm32_adc_handler);
return RT_EOK;
}
static const struct rt_adc_ops stm_adc_ops =
{
.enabled = stm32_adc_enabled,
.convert = stm32_adc_get_value,
.get_resolution = stm32_adc_get_resolution,
.get_vref = stm32_adc_get_vref,
};
static int stm32_adc_init(void)
{
int result = RT_EOK;
/* save adc name */
char name_buf[5] = {'a', 'd', 'c', '0', 0};
int i = 0;
for (i = 0; i < sizeof(adc_config) / sizeof(adc_config[0]); i++)
{
/* ADC init */
name_buf[3] = '0';
stm32_adc_obj[i].ADC_Handler = adc_config[i];
#if defined(ADC1)
if (stm32_adc_obj[i].ADC_Handler.Instance == ADC1)
{
name_buf[3] = '1';
}
#endif
#if defined(ADC2)
if (stm32_adc_obj[i].ADC_Handler.Instance == ADC2)
{
name_buf[3] = '2';
}
#endif
#if defined(ADC3)
if (stm32_adc_obj[i].ADC_Handler.Instance == ADC3)
{
name_buf[3] = '3';
}
#endif
if (HAL_ADC_Init(&stm32_adc_obj[i].ADC_Handler) != HAL_OK)
{
LOG_E("%s init failed", name_buf);
result = -RT_ERROR;
}
else
{
/* register ADC device */
if (rt_hw_adc_register(&stm32_adc_obj[i].stm32_adc_device, name_buf, &stm_adc_ops, &stm32_adc_obj[i].ADC_Handler) == RT_EOK)
{
LOG_D("%s init success", name_buf);
}
else
{
LOG_E("%s register failed", name_buf);
result = -RT_ERROR;
}
}
}
return result;
}
INIT_BOARD_EXPORT(stm32_adc_init);
#endif /* BSP_USING_ADC */
|
