Re: I2C Read timeout too long by username » Sat Oct 15, 2022 3:04 pm Not sure if this is it or not. The examples show: ret = i2c_master_cmd_begin(i2c_num, cmd, 1000 / portTICK_RATE_MS); Not sure if pdMS_TO_TICKS(10) results are the same as 10 / portTICK_RATE_MSva...
The current implementation of the stm32 I2C driver assumes that the I2C device is fully operational for any IO operation. If in whatever case the IC gets broken or maybe not soldered properly while production the current implementation r...
3、当外设对于读时序要求中间是 stop 信号不是 repeat start 信号的时候,该如何处理? 这时需要调用两次 i2c_transfer, I2C read 拆分成两次,修改如下: 登录后复制static int i2c_read_bytes(struct i2c_client *client, u8 cmd, u8 *data, u8 data_len) {struct i2c_msg msgs[2]; intret; u8 *buffer; ...
/* acknowledge is sent in i2c_read. */ int i; unsigned char indata = 0; struct i2c_algo_bit_data *adap = i2c_adap->algo_data; /* assert: scl is low */ sdahi(adap); for (i = 0; i < 8; i++) { if (sclhi(adap) < 0) { /* timeout */ bit_dbg(1, &i2c_adap->...
i2c_cmd_handle_t cmd = i2c_cmd_link_create(); i2c_master_start(cmd); i2c_master_write_byte(cmd, (slave_device_address<<1)|I2C_MASTER_WRITE, ACK_CHECK_EN ); i2c_master_write_byte(cmd, read_address, ACK_CHECK_EN); i2c_master_start(cmd); i2c_master_start(cmd); i2c_master_write...
I2C timeout Postbytatulea»Fri Aug 09, 2019 3:19 pm Hi, I have an ESP32 WROVER dev board and a BQ27220. I am trying to read its device number. I have a logic analyzer to monitor the traffic as well. This is the code that I am using:...
HAL_I2C_Mem_Read(I2Cx, MPU6050_ADDR, MPU_DEVICE_ID_REG,1, &check,1, I2C_TimeOut); // 0x68 will be returned by the sensor if everything goes well if(check ==104) { // power management register 0X6B we should write all 0's to wake the sensor up ...
(I2CTimeout--) == 0) return I2C_TIMEOUT_UserCallback(11); } /*通过重新设置PE位清除EV6事件 */ I2C_Cmd(EEPROM_I2Cx, ENABLE); /* 发送要读取的EEPROM内部地址(即EEPROM内部存储器的地址) */ I2C_SendData(EEPROM_I2Cx, ReadAddr); I2CTimeout = I2CT_FLAG_TIMEOUT; /* 检测 EV8 事件并...
read(); Wire.endTransmission(); if(value != MPU6050_ADDRESS) { MPU_online = false; return false; } else { MPU_online = true; return true; } } void MPU_init() { pinMode(MPU_POWER_PIN, OUTPUT); digitalWrite(MPU_POWER_PIN, LOW); vTaskDelay(1000); digitalWrite(MPU_POWER_PIN, HIGH...
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/887268/am3352-i2c-slave-timeout-issue 器件型号:AM3352 如果主机在 M335x 初始化阶段通过总线发送信号、则使用 AM3352 I2C 作为从设备。 从设备 AM335x 可能挂起并报告超时、请按如下方式记录: ...