Paparazzi UAS  v5.15_devel-88-gb3ad7fe
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ads1114.c
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21 */
22 
23 
24 /* driver for the ADC ads1114 (16 bits I2C 860SpS max) from Texas instruments
25  * Navarro & Gorraz & Hattenberger
26  */
27 
28 #include "peripherals/ads1114.h"
29 
30 #if USE_ADS1114_1
31 struct ads1114_periph ads1114_1;
32 #endif
33 #if USE_ADS1114_2
34 struct ads1114_periph ads1114_2;
35 #endif
36 
37 void ads1114_init(void)
38 {
39  /* configure the ads1114_1 */
40 #if USE_ADS1114_1
41  ads1114_1.i2c_addr = ADS1114_1_I2C_ADDR;
42  ads1114_1.trans.buf[0] = ADS1114_POINTER_CONFIG_REG;
43  ads1114_1.trans.buf[1] = ADS1114_1_CONFIG_MSB;
44  ads1114_1.trans.buf[2] = ADS1114_1_CONFIG_LSB;
45  i2c_transmit(&ADS1114_I2C_DEV, &ads1114_1.trans, ADS1114_1_I2C_ADDR, 3);
46  ads1114_1.config_done = false;
47  ads1114_1.data_available = false;
48 #endif
49 
50  /* configure the ads1114_2 */
51 #if USE_ADS1114_2
52  ads1114_2.i2c_addr = ADS1114_2_I2C_ADDR;
53  ads1114_2.trans.buf[0] = ADS1114_POINTER_CONFIG_REG;
54  ads1114_2.trans.buf[1] = ADS1114_2_CONFIG_MSB;
55  ads1114_2.trans.buf[2] = ADS1114_2_CONFIG_LSB;
56  i2c_transmit(&ADS1114_I2C_DEV, &ads1114_2.trans, ADS1114_2_I2C_ADDR, 3);
57  ads1114_2.config_done = false;
58  ads1114_2.data_available = false;
59 #endif
60 }
61 
62 
64 {
65  // Config done with success
66  // start new reading when previous is done (and read if success)
67  if (p->config_done && p->trans.status == I2CTransDone) {
69  i2c_transceive(&ADS1114_I2C_DEV, &(p->trans), p->i2c_addr, 1, 2);
70  }
71 }
72 
73 
bool config_done
Definition: ads1114.h:119
#define ADS1114_1_I2C_ADDR
Definition: ads1114.h:36
#define ADS1114_2_I2C_ADDR
Definition: ads1114.h:39
volatile uint8_t buf[I2C_BUF_LEN]
Transaction buffer With I2C_BUF_LEN number of bytes.
Definition: i2c.h:122
#define ADS1114_2_CONFIG_LSB
Definition: ads1114.h:108
#define ADS1114_POINTER_CONFIG_REG
Definition: ads1114.h:44
#define ADS1114_2_CONFIG_MSB
Definition: ads1114.h:107
void ads1114_read(struct ads1114_periph *p)
Definition: ads1114.c:63
void ads1114_init(void)
Definition: ads1114.c:37
uint8_t i2c_addr
Definition: ads1114.h:118
transaction set to done by user level
Definition: i2c.h:59
struct i2c_transaction trans
Definition: ads1114.h:117
bool i2c_transceive(struct i2c_periph *p, struct i2c_transaction *t, uint8_t s_addr, uint8_t len_w, uint16_t len_r)
Submit a write/read transaction.
Definition: i2c.c:328
enum I2CTransactionStatus status
Transaction status.
Definition: i2c.h:126
bool i2c_transmit(struct i2c_periph *p, struct i2c_transaction *t, uint8_t s_addr, uint8_t len)
Submit a write only transaction.
Definition: i2c.c:308
#define ADS1114_1_CONFIG_LSB
Definition: ads1114.h:76
#define ADS1114_POINTER_CONV_REG
Definition: ads1114.h:43
static float p[2][2]
#define ADS1114_I2C_DEV
Definition: ads1114.h:113
#define ADS1114_1_CONFIG_MSB
Definition: ads1114.h:75