Search found 143 matches

by ESP_Dazz
Wed May 29, 2019 2:29 pm
Forum: ESP32 IDF
Topic: Same values whether I dip the moisture sensor in water or not
Replies: 2
Views: 398

Re: Same values whether I dip the moisture sensor in water or not

What is the voltage range of your moisture sensor vs your ADC attenuation configuration?
by ESP_Dazz
Fri May 24, 2019 9:20 am
Forum: ESP-IDF 中文讨论版
Topic: 怎么把adc的校准值烧录进efuse中?
Replies: 4
Views: 861

Re: 怎么把adc的校准值烧录进efuse中?

D2WD 芯片也有,但是那个出厂日期我就不清楚。可以联系 sales@espressif.com 查询芯片上的 Date Code (请看下图)是否有做校准。 chip_surface_marking.png 如果芯片数量不多也可以用 espefuse.py 工具直接读取芯片里的 efuse 值。 # python $IDF_PATH/components/esptool_py/esptool/espefuse.py --port COM7 adc_info 有校准的芯片 output log # python $IDF_PATH/components/esptool_py/esptool/e...
by ESP_Dazz
Thu May 23, 2019 8:26 am
Forum: ESP-IDF 中文讨论版
Topic: 怎么把adc的校准值烧录进efuse中?
Replies: 4
Views: 861

Re: 怎么把adc的校准值烧录进efuse中?

VREF 校准只
由于 espefuse 工具没有支持烧 VREF,个人用户无法自己去烧 VREF。但是所有从2018年起生产的 ESP32-D0WD 和 ESP32-D0WDQ6 芯片都已烧了 VREF 校准值 。如果您需要量产,请联系 sales@espressif.com 或在这个链接提问哪里可以购买已烧了 VREF 校准值的芯片。

Two Point 校准只
TP 校准值可以用 espefuse 工具烧进 EFUSE BLK3。但是 TP 校准值要用户自己去量度和计算(请看量度和计算步骤)。
by ESP_Dazz
Tue May 21, 2019 1:39 pm
Forum: General Discussion
Topic: my 3 topics/posts have vanished
Replies: 2
Views: 639

Re: my 3 topics/posts have vanished

These posts?
viewtopic.php?f=18&t=10640&p=43655#p43655
viewtopic.php?f=18&t=10631&p=43613#p43613

Seems like there weren't approved yet. New users need to have their first few posts manually approved by a forum moderator as an anti spam measure.
by ESP_Dazz
Tue May 21, 2019 1:34 pm
Forum: General Discussion
Topic: ADC1
Replies: 1
Views: 636

Re: ADC1

The 12-bit ADC has a maximum raw reading of 4095 meaning the ADC is maxed out. Change your ADC attenuation to support a larger voltage range.
by ESP_Dazz
Fri May 17, 2019 1:58 pm
Forum: ESP32 IDF
Topic: About remote frame sending in CAN (ISO 15785-2)
Replies: 1
Views: 292

Re: About remote frame sending in CAN (ISO 15785-2)

Note: sending CAN TX with the RTR setting does not work. Could you elaborate more on the specifics of the issue you're facing Is there any activity on the bus when attempting to send an RTR frame? Is the receiving node acknowledging the RTR Frame but does not transmit a Data Frame in response? Is y...
by ESP_Dazz
Wed May 15, 2019 7:13 am
Forum: ESP-IDF 中文讨论版
Topic: 求助 ESP32 如何配置 CAN 双滤波器模式 ?
Replies: 3
Views: 712

Re: 求助 ESP32 如何配置 CAN 双滤波器模式 ?

根据双模式的为将两个 ID 值写到 acceptance_code 里。如果 Filter 1 需要监测包的 Data Byte 1,必须将 Data Byte 1 值也写到 acceptance_code 里,否则要用 acceptance_mask 作为位掩码掩盖 Data Byte 1 部分。
acc_filter.png
acc_filter.png (2.9 KiB) Viewed 664 times
请看链接了解更多详情
by ESP_Dazz
Wed May 15, 2019 6:21 am
Forum: ESP32 IDF
Topic: CAN vs OTA: interrupt watchdog timeouts despite delay in OTA and IRAM_ATTR in CAN
Replies: 8
Views: 1092

Re: CAN vs OTA: interrupt watchdog timeouts despite delay in OTA and IRAM_ATTR in CAN

@jcsbanks I think the first thing to do is to determine whether this is an actual deadlock or a legitimate interrupt watchdog timeout. It's possible that the duration of the the flash operation in addition to handling the CAN interrupt exceeds the interrupt watchdog timeout duration. Try increasing ...
by ESP_Dazz
Tue May 14, 2019 11:59 am
Forum: ESP-IDF 中文讨论版
Topic: 求助 ESP32 如何配置 CAN 双滤波器模式 ?
Replies: 3
Views: 712

Re: 求助 ESP32 如何配置 CAN 双滤波器模式 ?

首先要 根据 Dual Filter 模式计算 acceptance_code 和 acceptance_mask 值 。然后在配置 can_filter_config_t 时候将 single_filter 变量设为 false 例 Filter 1 会接受所有从 0x0F 到 0xFF 的 Standard ID 包(包括 RTR ) Filter 2 会接收所有从 0x7F0 到 0x7FF 的 Standard ID 包 (包括 RTR ) acceptance_code = 0x01E0FE00 acceptance_mask = 0x1E1F01FF static const ca...

Go to advanced search