Search found 118 matches

by ESP_houwenxiang
Thu Oct 24, 2019 2:38 am
Forum: General Discussion
Topic: ESP32-WROOM Occasional reset, and then locked in bootloader WDT
Replies: 10
Views: 3507

Re: ESP32-WROOM Occasional reset, and then locked in bootloader WDT

I assume by "which GPIO are you using", you are referring to IO0 and Reset? I am referring to which IOs are used in the I2C bus(SCL. SDA). Also, I assume you know it's entering the 2nd bootloader because of this line in the logs: entry 0x4008039c. Is that correct? Yes, I think the 2nd bootloader ha...
by ESP_houwenxiang
Wed Oct 23, 2019 1:40 pm
Forum: ESP-IDF
Topic: i2s_write losing data due to fail to return update pointer
Replies: 11
Views: 3125

Re: i2s_write losing data due to fail to return update pointer

Hi, I mean that you can improve the ADC task priority and increase the buffer count: int i2s_num = I2S_NUM; i2s_config_t i2s_config = { .mode = I2S_MODE_MASTER | I2S_MODE_TX | I2S_MODE_DAC_BUILT_IN, .sample_rate = 16000, .bits_per_sample = 16, .communication_format = I2S_COMM_FORMAT_I2S_MSB, .channe...
by ESP_houwenxiang
Wed Oct 23, 2019 3:53 am
Forum: General Discussion
Topic: ESP32-WROOM Occasional reset, and then locked in bootloader WDT
Replies: 10
Views: 3507

Re: ESP32-WROOM Occasional reset, and then locked in bootloader WDT

In addition, we can see that the chip are jumping to the 2th bootloader. Can you add some debugging information? It is difficult for us to reproduce your issue. find the function "call_start_cpu0", add some log like this: void __attribute__((noreturn)) call_start_cpu0(void) { ESP_LOGE(TAG, "----%p--...
by ESP_houwenxiang
Wed Oct 23, 2019 3:12 am
Forum: General Discussion
Topic: ESP32-WROOM Occasional reset, and then locked in bootloader WDT
Replies: 10
Views: 3507

Re: ESP32-WROOM Occasional reset, and then locked in bootloader WDT

Hi, cdDave
Which GPIO are you using? What is the GPIO level when it is restarted?
by ESP_houwenxiang
Wed Oct 23, 2019 2:37 am
Forum: ESP-IDF
Topic: i2s_write losing data due to fail to return update pointer
Replies: 11
Views: 3125

Re: i2s_write losing data due to fail to return update pointer

Hi,
Can you make the I2S task run at a higher priority? At the same time you can increase the `dma_buf_count`.
by ESP_houwenxiang
Tue Oct 22, 2019 7:13 am
Forum: General Discussion
Topic: Is uart_write_bytes and read thread safe?
Replies: 12
Views: 3208

Re: Is uart_write_bytes and read thread safe?

Hi, the read API is thread safe.
Is UART1 and UART2 running at a high baud rate at the same time? So, can you try to Initialize UART1 a UART2 on different core? So their ISR handle will be registered on different cores.

thanks !!
by ESP_houwenxiang
Fri Oct 18, 2019 12:19 pm
Forum: ESP-IDF 中文讨论版
Topic: 关于adc和GPIO的问题
Replies: 2
Views: 1670

Re: 关于adc和GPIO的问题

1. 请问 你的 GPIO34 是否已经连接到待测信号,或者是悬空的?

2. gpio_set_drive_capability 是用来设置 GPIO 的驱动能力的
by ESP_houwenxiang
Fri Oct 18, 2019 12:15 pm
Forum: ESP-IDF 中文讨论版
Topic: 关于GPIO中断。
Replies: 1
Views: 1215

Re: 关于GPIO中断。

是否可以提供更详细的信息? 比如两块测试板是如何连接的?两块测试板的地线是否共用
by ESP_houwenxiang
Fri Oct 18, 2019 11:57 am
Forum: ESP-IDF 中文讨论版
Topic: ESP32 WROVER GPIO39,35,34配置问题
Replies: 1
Views: 1291

Re: ESP32 WROVER GPIO39,35,34配置问题

Hi,

IO34~IO39 只能作为输入引脚并且没有内部上拉功能. 所以需要外接上拉电阻.

谢谢 !!
by ESP_houwenxiang
Fri Oct 18, 2019 11:50 am
Forum: ESP-IDF 中文讨论版
Topic: ESP32 外接LAN8720,GPIO0对其提供CLK,Ethernet例程初始化出错
Replies: 5
Views: 5487

Re: ESP32 外接LAN8720,GPIO0对其提供CLK,Ethernet例程初始化出错

Hi
请检查 IO0 上是否有电容, 作为 CLK 输出 pin 的时候最好 IO0 上没有接电容, 这会影响时序.

谢谢!!

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