AD_Conversion(void)
时间: 2024-05-27 10:08:35 浏览: 87
AD_Conversion() 函数是一个模拟数字转换函数,通常用于单片机或嵌入式系统中。它的作用是将模拟信号转换为数字信号,以便微处理器可以对其进行处理。具体实现方式根据不同的硬件平台和芯片厂商而异。在函数中,可能需要设置一些参数,如ADC通道、参考电压等,以便正确地进行转换。AD_Conversion() 函数的返回值通常是转换后的数字量。
相关问题
根据以下api和数据结构写出一个将adc转换出来的数据通过GATT发给手机端的代码void ble_controller_init(uint8_t task_priority) int hci_driver_init(void) int bt_enable(bt_ready_cb_t cb)int bt_le_adv_start(const struct bt_le_adv_param *param,const struct bt_data *ad, size_t ad_len, const struct bt_data *sd, size_t sd_len)int bt_le_adv_update_data(const struct bt_data *ad, size_t ad_len,const struct bt_data *sd, size_t sd_len)int bt_le_adv_stop(void)int bt_le_scan_start(const struct bt_le_scan_param *param, bt_le_scan_cb_t cb)int bt_le_scan_stop(void)int bt_le_whitelist_add(const bt_addr_le_t *addr)int bt_le_whitelist_rem(const bt_addr_le_t *addr)int bt_le_whitelist_clear(void)int bt_le_set_chan_map(u8_t chan_map[5])int bt_unpair(u8_t id, const bt_addr_le_t *addr)int bt_conn_get_info(const struct bt_conn *conn, struct bt_conn_info *info)int bt_conn_get_remote_dev_info(struct bt_conn_info *info)int bt_conn_le_param_update(struct bt_conn *conn,const struct bt_le_conn_param *param)int bt_conn_disconnect(struct bt_conn *conn, u8_t reason)struct bt_conn *bt_conn_create_le(const bt_addr_le_t *peer,const struct bt_le_conn_param *param)int bt_conn_create_auto_le(const struct bt_le_conn_param *param)int bt_conn_create_auto_stop(void)int bt_le_set_auto_conn(const bt_addr_le_t *addr,const struct bt_le_conn_param *param)struct bt_conn *bt_conn_create_slave_le(const bt_addr_le_t *peer,const struct bt_le_adv_param *param)int bt_conn_set_security(struct bt_conn *conn, bt_security_t sec)bt_security_t bt_conn_get_security(struct bt_conn *conn)u8_t bt_conn_enc_key_size(struct bt_conn *conn)void bt_conn_cb_register(struct bt_conn_cb *cb)void bt_set_bondable(bool enable)int bt_conn_auth_cb_register(const struct bt_conn_auth_cb *cb)int bt_conn_auth_passkey_entry(struct bt_conn *conn, unsigned int passkey)int bt_conn_auth_cancel(struct bt_conn *conn)int bt_conn_auth_passkey_confirm(struct bt_conn *conn)int bt_conn_auth_pincode_entry(struct bt_conn *conn, const char *pin)int bt_le_read_rssi(u16_t handle,int8_t *rssi)int bt_get_local_address(bt_addr_le_t *adv_addr)int bt_set_tx_pwr(int8_t power)bt_le_adv_parambt_databt_le_scan_parambt_le_conn_parambt_conn,并加入已经写好的adc代码bflb_adc_init(adc, &cfg); bflb_adc_channel_config(adc, chan, TEST_ADC_CHANNEL); for (uint32_t i = 0; i < 10; i++) { bflb_adc_start_conversion(adc); struct bflb_adc_result_s result; uint32_t raw_data = bflb_adc_read_raw(adc); bflb_adc_parse_result(adc, &raw_data, &result, 1); printf("pos chan %d,%d mv \r\n", result.pos_chan, result.millivolt); // char data[20]; // sprintf(data,"ADC result:%d",result.millivolt); // if(conn){ // bt_gatt_notify(conn,&attrs[1],data,sizeof(data)); // } bflb_mtimer_delay_ms(250); }
这段代码需要补充一些信息才能完整地实现将adc转换出来的数据通过GATT发给手机端的功能。以下是可能需要补充的信息:
- GATT服务的UUID和特征的UUID
- GATT服务和特征的定义和初始化
- 连接的回调函数
- 连接对象的定义和初始化
假设以上信息已经准备好了,那么可以根据以下步骤完成代码的编写:
1. 在ble_controller_init函数中初始化GATT服务和特征,并注册连接的回调函数。
2. 在adc转换完成后,将结果存储到一个变量中。
3. 在连接回调函数中,当有连接建立时,获取连接对象,并在连接对象有效的情况下,通过bt_gatt_notify函数将adc结果发送出去。
以下是可能需要补充的代码:
```c
#define ADC_GATT_SERVICE_UUID BT_UUID_DECLARE_16(0x1234)
#define ADC_GATT_CHAR_UUID BT_UUID_DECLARE_16(0x5678)
static struct bt_conn *current_conn;
static struct bt_gatt_attr attrs[] = {
BT_GATT_PRIMARY_SERVICE(ADC_GATT_SERVICE_UUID),
BT_GATT_CHARACTERISTIC(ADC_GATT_CHAR_UUID,
BT_GATT_CHRC_NOTIFY,
BT_GATT_PERM_NONE,
NULL, NULL, NULL),
BT_GATT_CCC(NULL, BT_GATT_PERM_READ | BT_GATT_PERM_WRITE),
};
static void connected(struct bt_conn *conn, u8_t err)
{
if (err) {
return;
}
current_conn = bt_conn_ref(conn);
}
static void disconnected(struct bt_conn *conn, u8_t reason)
{
if (current_conn == conn) {
bt_conn_unref(current_conn);
current_conn = NULL;
}
}
static struct bt_conn_cb conn_callbacks = {
.connected = connected,
.disconnected = disconnected,
};
void ble_controller_init(uint8_t task_priority)
{
int err;
err = bt_gatt_service_register(attrs, ARRAY_SIZE(attrs));
if (err) {
return;
}
bt_conn_cb_register(&conn_callbacks);
bt_enable(NULL);
bt_le_adv_start(...);
}
void adc_to_gatt(void)
{
int adc = 0; // assume adc result is stored in this variable
char data[20];
sprintf(data, "ADC result: %d", adc);
if (current_conn) {
bt_gatt_notify(current_conn, &attrs[1], data, sizeof(data));
}
}
```
stm32 ad7718程序
AD7718是一款高精度Σ-Δ型ADC芯片,可以通过SPI接口与STM32进行通信。下面是一个基本的STM32 AD7718程序,其中使用了STM32的HAL库。
首先需要定义一些宏和变量:
```c
#define AD7718_CS_GPIO_Port GPIOA
#define AD7718_CS_Pin GPIO_PIN_4
#define AD7718_Reset_GPIO_Port GPIOB
#define AD7718_Reset_Pin GPIO_PIN_12
#define AD7718_DRDY_GPIO_Port GPIOC
#define AD7718_DRDY_Pin GPIO_PIN_5
#define AD7718_SPI hspi1
uint8_t AD7718_TxBuffer[3], AD7718_RxBuffer[3];
uint8_t AD7718_Configure_Buffer[6];
uint8_t AD7718_Identify_Buffer[3];
uint8_t AD7718_PowerDown_Buffer[3];
uint8_t AD7718_PowerUp_Buffer[3];
SPI_HandleTypeDef AD7718_SPI;
```
然后定义一些函数:
```c
void AD7718_Reset(void);
void AD7718_WaitDRDY(void);
void AD7718_ReadRegister(uint8_t address, uint8_t *buffer);
void AD7718_WriteRegister(uint8_t address, uint8_t data);
```
其中`AD7718_Reset`函数用于复位AD7718芯片:
```c
void AD7718_Reset(void)
{
HAL_GPIO_WritePin(AD7718_Reset_GPIO_Port, AD7718_Reset_Pin, GPIO_PIN_RESET);
HAL_Delay(10);
HAL_GPIO_WritePin(AD7718_Reset_GPIO_Port, AD7718_Reset_Pin, GPIO_PIN_SET);
HAL_Delay(10);
}
```
`AD7718_WaitDRDY`函数用于等待AD7718芯片的数据准备就绪:
```c
void AD7718_WaitDRDY(void)
{
while (HAL_GPIO_ReadPin(AD7718_DRDY_GPIO_Port, AD7718_DRDY_Pin) == GPIO_PIN_SET);
while (HAL_GPIO_ReadPin(AD7718_DRDY_GPIO_Port, AD7718_DRDY_Pin) == GPIO_PIN_RESET);
}
```
`AD7718_ReadRegister`函数用于读取AD7718芯片的寄存器:
```c
void AD7718_ReadRegister(uint8_t address, uint8_t *buffer)
{
AD7718_TxBuffer[0] = address | 0x80;
AD7718_TxBuffer[1] = 0;
AD7718_TxBuffer[2] = 0;
HAL_GPIO_WritePin(AD7718_CS_GPIO_Port, AD7718_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(&AD7718_SPI, AD7718_TxBuffer, AD7718_RxBuffer, 3, 1000);
HAL_GPIO_WritePin(AD7718_CS_GPIO_Port, AD7718_CS_Pin, GPIO_PIN_SET);
buffer[0] = AD7718_RxBuffer[1];
buffer[1] = AD7718_RxBuffer[2];
}
```
`AD7718_WriteRegister`函数用于写入AD7718芯片的寄存器:
```c
void AD7718_WriteRegister(uint8_t address, uint8_t data)
{
AD7718_TxBuffer[0] = address;
AD7718_TxBuffer[1] = 0;
AD7718_TxBuffer[2] = data;
HAL_GPIO_WritePin(AD7718_CS_GPIO_Port, AD7718_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&AD7718_SPI, AD7718_TxBuffer, 3, 1000);
HAL_GPIO_WritePin(AD7718_CS_GPIO_Port, AD7718_CS_Pin, GPIO_PIN_SET);
}
```
最后,在主函数中可以按照以下步骤初始化AD7718芯片:
```c
int main(void)
{
HAL_Init();
MX_GPIO_Init();
MX_SPI1_Init();
AD7718_Reset();
AD7718_WriteRegister(AD7718_REG_MODE, AD7718_MODE_CLOCK_INTERNAL | AD7718_MODE_CONVERSION_SINGLE);
AD7718_WriteRegister(AD7718_REG_FILTER, AD7718_FILTER_RATE_16_7);
AD7718_WriteRegister(AD7718_REG_GAIN, AD7718_GAIN_1);
AD7718_WriteRegister(AD7718_REG_OFFSET, 0x80);
AD7718_WriteRegister(AD7718_REG_IO, AD7718_IO_MIDSCALE_ZERO);
AD7718_WriteRegister(AD7718_REG_TEST, 0);
while (1)
{
AD7718_WriteRegister(AD7718_REG_MODE, AD7718_MODE_CLOCK_INTERNAL | AD7718_MODE_CONVERSION_SINGLE);
AD7718_WaitDRDY();
AD7718_ReadRegister(AD7718_REG_DATA, AD7718_RxBuffer);
// 处理AD7718_RxBuffer中的数据
HAL_Delay(10);
}
}
```
其中,`AD7718_Reset`用于复位芯片;`AD7718_WriteRegister`用于设置芯片的寄存器;`AD7718_WaitDRDY`用于等待数据准备就绪;`AD7718_ReadRegister`用于读取芯片的寄存器。在主函数中,首先初始化芯片,然后循环进行AD转换并对结果进行处理。
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