amiro-lld / drivers / AT42QT1050 / v1 / alld_AT42QT1050.h @ e7af07e7
History | View | Annotate | Download (11.564 KB)
| 1 |
/*
|
|---|---|
| 2 |
AMiRo-LLD is a compilation of low-level hardware drivers for the Autonomous Mini Robot (AMiRo) platform.
|
| 3 |
Copyright (C) 2016..2019 Thomas Schöpping et al.
|
| 4 |
|
| 5 |
This program is free software: you can redistribute it and/or modify
|
| 6 |
it under the terms of the GNU Lesser General Public License as published by
|
| 7 |
the Free Software Foundation, either version 3 of the License, or
|
| 8 |
(at your option) any later version.
|
| 9 |
|
| 10 |
This program is distributed in the hope that it will be useful,
|
| 11 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 12 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 13 |
GNU Lesser General Public License for more details.
|
| 14 |
|
| 15 |
You should have received a copy of the GNU Lesser General Public License
|
| 16 |
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
| 17 |
*/
|
| 18 |
|
| 19 |
/**
|
| 20 |
* @file alld_AT42QT1050.h
|
| 21 |
* @brief Touch sensor macros and structures.
|
| 22 |
*
|
| 23 |
* @addtogroup lld_touch
|
| 24 |
* @{
|
| 25 |
*/
|
| 26 |
|
| 27 |
#ifndef AMIROLLD_AT42QT1050_H
|
| 28 |
#define AMIROLLD_AT42QT1050_H
|
| 29 |
|
| 30 |
#include <amiro-lld.h> |
| 31 |
|
| 32 |
/******************************************************************************/
|
| 33 |
/* CONSTANTS */
|
| 34 |
/******************************************************************************/
|
| 35 |
|
| 36 |
/**
|
| 37 |
* @brief Maximum I2C frequency.
|
| 38 |
*/
|
| 39 |
#define AT42QT1050_LLD_I2C_MAXFREQUENCY 400000 |
| 40 |
|
| 41 |
/**
|
| 42 |
* @brief A falling edge indicats an interrupt.
|
| 43 |
*/
|
| 44 |
#define AT42QT1050_LLD_INT_EDGE APAL_GPIO_EDGE_FALLING
|
| 45 |
|
| 46 |
/**
|
| 47 |
* @brief Number of touch keys supported by AT42QT1050.
|
| 48 |
*/
|
| 49 |
#define AT42QT1050_LLD_NUM_KEYS 5 |
| 50 |
|
| 51 |
/**
|
| 52 |
* @brief Maximum time (in microseconds) to acquire all key signals before the overflow bit of the detection status register is set.
|
| 53 |
*/
|
| 54 |
#define AT42QT1050_LLD_MAX_KEY_ACQUIRATION_TIME 8000 |
| 55 |
|
| 56 |
/**
|
| 57 |
* @brief The chip ID as can be read from the according register (constant).
|
| 58 |
*/
|
| 59 |
#define AT42QT1050_LLD_CHIPID 0x46 |
| 60 |
|
| 61 |
/******************************************************************************/
|
| 62 |
/* SETTINGS */
|
| 63 |
/******************************************************************************/
|
| 64 |
|
| 65 |
/******************************************************************************/
|
| 66 |
/* CHECKS */
|
| 67 |
/******************************************************************************/
|
| 68 |
|
| 69 |
/******************************************************************************/
|
| 70 |
/* DATA STRUCTURES AND TYPES */
|
| 71 |
/******************************************************************************/
|
| 72 |
|
| 73 |
/**
|
| 74 |
* @brief The AT42QT1050Driver sruct.
|
| 75 |
*/
|
| 76 |
typedef struct { |
| 77 |
apalI2CDriver_t* i2cd; |
| 78 |
apalI2Caddr_t addr; |
| 79 |
} AT42QT1050Driver; |
| 80 |
|
| 81 |
/**
|
| 82 |
* @brief Possible I2C address configurations.
|
| 83 |
*/
|
| 84 |
enum {
|
| 85 |
AT42QT1050_LLD_I2C_ADDRSEL_LOW = 0x0041u, /**< ADDR_SEL pin is pulled low. */ |
| 86 |
AT42QT1050_LLD_I2C_ADDRSEL_HIGH = 0x0046u, /**< ADDR_SEL pin is pulled high. */ |
| 87 |
}; |
| 88 |
|
| 89 |
/**
|
| 90 |
* @brief Available register addresses of the AT42QT1050.
|
| 91 |
*/
|
| 92 |
typedef enum { |
| 93 |
AT42QT1050_LLD_REG_CHIPID = 0x00u, /**< read only */ |
| 94 |
AT42QT1050_LLD_REG_FIRMWAREVERSION = 0x01u, /**< read only */ |
| 95 |
AT42QT1050_LLD_REG_DETECTIONSTATUS = 0x02u, /**< read only */ |
| 96 |
AT42QT1050_LLD_REG_KEYSTATUS = 0x03u, /**< read only */ |
| 97 |
AT42QT1050_LLD_REG_KEYSIGNAL_0 = 0x06u, /**< read only */ |
| 98 |
AT42QT1050_LLD_REG_KEYSIGNAL_1 = 0x08u, /**< read only */ |
| 99 |
AT42QT1050_LLD_REG_KEYSIGNAL_2 = 0x0Du, /**< read only */ |
| 100 |
AT42QT1050_LLD_REG_KEYSIGNAL_3 = 0x0Fu, /**< read only */ |
| 101 |
AT42QT1050_LLD_REG_KEYSIGNAL_4 = 0x11u, /**< read only */ |
| 102 |
AT42QT1050_LLD_REG_REFERENCEDATA_0 = 0x14u, /**< read only */ |
| 103 |
AT42QT1050_LLD_REG_REFERENCEDATA_1 = 0x16u, /**< read only */ |
| 104 |
AT42QT1050_LLD_REG_REFERENCEDATA_2 = 0x1Au, /**< read only */ |
| 105 |
AT42QT1050_LLD_REG_REFERENCEDATA_3 = 0x1Cu, /**< read only */ |
| 106 |
AT42QT1050_LLD_REG_REFERENCEDATA_4 = 0x1Eu, /**< read only */ |
| 107 |
AT42QT1050_LLD_REG_NEGATIVETHRESHOLD_0 = 0x21u, /**< read/write */ |
| 108 |
AT42QT1050_LLD_REG_NEGATIVETHRESHOLD_1 = 0x22u, /**< read/write */ |
| 109 |
AT42QT1050_LLD_REG_NEGATIVETHRESHOLD_2 = 0x24u, /**< read/write */ |
| 110 |
AT42QT1050_LLD_REG_NEGATIVETHRESHOLD_3 = 0x25u, /**< read/write */ |
| 111 |
AT42QT1050_LLD_REG_NEGATIVETHRESHOLD_4 = 0x26u, /**< read/write */ |
| 112 |
AT42QT1050_LLD_REG_PULSE_SCALE_0 = 0x28u, /**< read/write */ |
| 113 |
AT42QT1050_LLD_REG_PULSE_SCALE_1 = 0x29u, /**< read/write */ |
| 114 |
AT42QT1050_LLD_REG_PULSE_SCALE_2 = 0x2Bu, /**< read/write */ |
| 115 |
AT42QT1050_LLD_REG_PULSE_SCALE_3 = 0x2Cu, /**< read/write */ |
| 116 |
AT42QT1050_LLD_REG_PULSE_SCALE_4 = 0x2Du, /**< read/write */ |
| 117 |
AT42QT1050_LLD_REG_INTEGRATOR_AKS_0 = 0x2Fu, /**< read/write */ |
| 118 |
AT42QT1050_LLD_REG_INTEGRATOR_AKS_1 = 0x30u, /**< read/write */ |
| 119 |
AT42QT1050_LLD_REG_INTEGRATOR_AKS_2 = 0x32u, /**< read/write */ |
| 120 |
AT42QT1050_LLD_REG_INTEGRATOR_AKS_3 = 0x33u, /**< read/write */ |
| 121 |
AT42QT1050_LLD_REG_INTEGRATOR_AKS_4 = 0x34u, /**< read/write */ |
| 122 |
AT42QT1050_LLD_REG_CHARGESHAREDELAY_0 = 0x36u, /**< read/write */ |
| 123 |
AT42QT1050_LLD_REG_CHARGESHAREDELAY_1 = 0x37u, /**< read/write */ |
| 124 |
AT42QT1050_LLD_REG_CHARGESHAREDELAY_2 = 0x39u, /**< read/write */ |
| 125 |
AT42QT1050_LLD_REG_CHARGESHAREDELAY_3 = 0x3Au, /**< read/write */ |
| 126 |
AT42QT1050_LLD_REG_CHARGESHAREDELAY_4 = 0x3Bu, /**< read/write */ |
| 127 |
AT42QT1050_LLD_REG_FINFOUTMAXCALGUARD = 0x3Cu, /**< read/write */ |
| 128 |
AT42QT1050_LLD_REG_LOWPOWERMODE = 0x3Du, /**< read/write */ |
| 129 |
AT42QT1050_LLD_REG_MAXONDURATION = 0x3Eu, /**< read/write */ |
| 130 |
AT42QT1050_LLD_REG_RESET_CALIBRATE = 0x3Fu, /**< read/write */ |
| 131 |
} at42qt1050_lld_register_t; |
| 132 |
|
| 133 |
/**
|
| 134 |
* @brief Firmware version register structure.
|
| 135 |
*/
|
| 136 |
typedef union { |
| 137 |
uint8_t raw; |
| 138 |
struct {
|
| 139 |
uint8_t minor : 4;
|
| 140 |
uint8_t major : 4;
|
| 141 |
}; |
| 142 |
} at42qt1050_lld_firmwarereg_t; |
| 143 |
|
| 144 |
|
| 145 |
/**
|
| 146 |
* @brief Relevant bits of the detection status register.
|
| 147 |
*/
|
| 148 |
typedef enum { |
| 149 |
AT42QT1050_LLD_DETECTIONSTATUS_TOUCH = 0x01u, /**< Set if any keys are in detect. */ |
| 150 |
AT42QT1050_LLD_DETECTIONSTATUS_OVERFLOW = 0x40u, /**< Set if the time to acquire all key signals exceeds 8ms. */ |
| 151 |
AT42QT1050_LLD_DETECTIONSTATUS_CALIBRATE = 0x80u, /**< Set during calibration sequence. */ |
| 152 |
} at42qt1050_lld_detectionstatusreg_t; |
| 153 |
|
| 154 |
/**
|
| 155 |
* @brief Key status register masks.
|
| 156 |
*/
|
| 157 |
typedef enum { |
| 158 |
AT42QT1050_LLD_KEYSTATUS_KEY0 = 0x02u,
|
| 159 |
AT42QT1050_LLD_KEYSTATUS_KEY1 = 0x04u,
|
| 160 |
AT42QT1050_LLD_KEYSTATUS_KEY2 = 0x10u,
|
| 161 |
AT42QT1050_LLD_KEYSTATUS_KEY3 = 0x20u,
|
| 162 |
AT42QT1050_LLD_KEYSTATUS_KEY4 = 0x40u,
|
| 163 |
} at42qt1050_lld_keystatusreg_t; |
| 164 |
|
| 165 |
/**
|
| 166 |
* @brief Pulse/Scale register structure.
|
| 167 |
*/
|
| 168 |
typedef union { |
| 169 |
uint8_t raw; |
| 170 |
struct {
|
| 171 |
uint8_t scale : 4;
|
| 172 |
uint8_t pulse : 4;
|
| 173 |
}; |
| 174 |
} at42qt1050_lld_pulsescalereg_t; |
| 175 |
|
| 176 |
/**
|
| 177 |
* @brief Detection Integrator (DI) / AKS register structure.
|
| 178 |
*/
|
| 179 |
typedef union { |
| 180 |
uint8_t raw; |
| 181 |
struct {
|
| 182 |
uint8_t aks : 2;
|
| 183 |
uint8_t detection_integrator : 6;
|
| 184 |
}; |
| 185 |
} at42qt1050_lld_detectionintegratoraksreg_t; |
| 186 |
|
| 187 |
/**
|
| 188 |
* @brief Charge share delay constant sclaing factor.
|
| 189 |
* @details Values in the charge share delay registers are multiplied by this factor.
|
| 190 |
* Unit is microseconds (µs).
|
| 191 |
*/
|
| 192 |
#define AT42QT1050_LLD_CHARGESHAREDELAY_FACTOR 2.5f |
| 193 |
|
| 194 |
/**
|
| 195 |
* @brief FastIn / FastOutDI / Max Cal / Guard Channel register masks.
|
| 196 |
*/
|
| 197 |
typedef enum { |
| 198 |
AT42QT1050_LLD_FINFOUTMAXCALGUARD_GUARD = 0x0Fu,
|
| 199 |
AT42QT1050_LLD_FINFOUTMAXCALGUARD_MAXCAL = 0x10u,
|
| 200 |
AT42QT1050_LLD_FINFOUTMAXCALGUARD_FO = 0x20u,
|
| 201 |
AT42QT1050_LLD_FINFOUTMAXCALGUARD_FI = 0x40u,
|
| 202 |
} at42qt1050_lld_finfoutmaxcalguardreg_t; |
| 203 |
|
| 204 |
/**
|
| 205 |
* @brief Low power mode constant scaling factor.
|
| 206 |
* @details The values in the low poer mode register is multiplied by this factor.
|
| 207 |
* Unit is microseconds (µs).
|
| 208 |
* @note Setting the power mode scaling register value to zero makes the AT42QT1050 enter deep-sleep mode.
|
| 209 |
*/
|
| 210 |
#define AT42QT1050_LLD_LOWPOWER_FACTOR 8000 |
| 211 |
|
| 212 |
/**
|
| 213 |
* @brief Man on duration constant scaling factor.
|
| 214 |
* @details The value in the max on duration register is multiplied by this factor.
|
| 215 |
* Unit is microseconds (µs).
|
| 216 |
*/
|
| 217 |
#define AT42QT1050_LLD_MAXONDURATION_FACTOR 160000 |
| 218 |
|
| 219 |
/**
|
| 220 |
* @brief RESET / Calibrate register masks.
|
| 221 |
*/
|
| 222 |
typedef enum { |
| 223 |
AT42QT1050_LLD_RESETCALIBRATE_CALIBRATE = 0x7Fu,
|
| 224 |
AT42QT1050_LLD_RESETCALIBRATE_RESET = 0x80u,
|
| 225 |
} at42qt1050_lld_resetcalibratereg_t; |
| 226 |
|
| 227 |
/******************************************************************************/
|
| 228 |
/* MACROS */
|
| 229 |
/******************************************************************************/
|
| 230 |
|
| 231 |
/******************************************************************************/
|
| 232 |
/* EXTERN DECLARATIONS */
|
| 233 |
/******************************************************************************/
|
| 234 |
|
| 235 |
#ifdef __cplusplus
|
| 236 |
extern "C" { |
| 237 |
#endif
|
| 238 |
apalExitStatus_t at42qt1050_lld_read_reg(const AT42QT1050Driver* at42qt1050d, const at42qt1050_lld_register_t reg, uint8_t* const data, const apalTime_t timeout); |
| 239 |
apalExitStatus_t at42qt1050_lld_write_reg(const AT42QT1050Driver* at42qt1050d, const at42qt1050_lld_register_t reg, const uint8_t data, const apalTime_t timeout); |
| 240 |
|
| 241 |
apalExitStatus_t at42qt1050_lld_read_keyssignal(const AT42QT1050Driver* at42qt1050d, const uint8_t key, uint16_t* signal, const apalTime_t timeout); |
| 242 |
apalExitStatus_t at42qt1050_lld_read_referencedata(const AT42QT1050Driver* at42qt1050d, const uint8_t key, uint16_t* refdata, const apalTime_t timeout); |
| 243 |
|
| 244 |
apalExitStatus_t at42qt1050_lld_reset_safe(const AT42QT1050Driver* at42qt1050d, const bool wait4wakeup, const apalTime_t timeout); |
| 245 |
apalExitStatus_t at42qt1050_lld_reset(const AT42QT1050Driver* at42qt1050d, const apalTime_t timeout, const bool wait4wakeup); |
| 246 |
|
| 247 |
uint16_t at42qt1050_lld_pulse2samples(const uint8_t pulse);
|
| 248 |
float at42qt1050_lld_samples2pulse(const uint16_t samples); |
| 249 |
uint16_t at42qt1050_lld_scale2scaling(const uint8_t scale);
|
| 250 |
float at42qt1050_lld_scaling2scale(const uint16_t factor); |
| 251 |
|
| 252 |
|
| 253 |
/**
|
| 254 |
* @brief Calculates n-th address based on address of register 0.
|
| 255 |
* @details Calculation: <scale value> = log2(<scaling factor>
|
| 256 |
* )
|
| 257 |
* @param[in] base Base address = frist register
|
| 258 |
* @param[in] inc Jump to the next register inc times
|
| 259 |
*
|
| 260 |
* @return Calculated register address
|
| 261 |
*/
|
| 262 |
inline at42qt1050_lld_register_t at42qt1050_lld_addr_calc(const at42qt1050_lld_register_t base, const uint8_t inc) { |
| 263 |
apalDbgAssert(inc < 5);
|
| 264 |
|
| 265 |
uint8_t double_result = 0; //16bit access |
| 266 |
|
| 267 |
switch (base) {
|
| 268 |
case AT42QT1050_LLD_REG_KEYSIGNAL_0: //2 4 2 2 |
| 269 |
case AT42QT1050_LLD_REG_REFERENCEDATA_0: //2 4 2 2 |
| 270 |
double_result = 1;
|
| 271 |
__attribute__((fallthrough)); |
| 272 |
case AT42QT1050_LLD_REG_NEGATIVETHRESHOLD_0: //1 2 1 1 |
| 273 |
case AT42QT1050_LLD_REG_PULSE_SCALE_0: //1 2 1 1 |
| 274 |
case AT42QT1050_LLD_REG_INTEGRATOR_AKS_0: //1 2 1 1 |
| 275 |
case AT42QT1050_LLD_REG_CHARGESHAREDELAY_0: //1 2 1 1 |
| 276 |
{
|
| 277 |
uint8_t increase = ((inc>1)?inc+1:inc); |
| 278 |
return (at42qt1050_lld_register_t) (((uint8_t) base)+(increase << double_result));
|
| 279 |
} |
| 280 |
default:
|
| 281 |
{
|
| 282 |
apalDbgPrintf("invalid base register 0x%04X\n", base);
|
| 283 |
return (at42qt1050_lld_register_t) 0xFF; //does not exist |
| 284 |
} |
| 285 |
} |
| 286 |
} |
| 287 |
|
| 288 |
#ifdef __cplusplus
|
| 289 |
} |
| 290 |
#endif
|
| 291 |
|
| 292 |
/******************************************************************************/
|
| 293 |
/* INLINE FUNCTIONS */
|
| 294 |
/******************************************************************************/
|
| 295 |
|
| 296 |
#endif /* AMIROLLD_AT42QT1050_H */ |
| 297 |
|
| 298 |
/** @} */
|
| 299 |
|