SDK-dat/ESP-SDK-dat/flash-download-tool-dat/flash-download-tool-dat.md
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@@ -11,9 +11,12 @@ SPI Speed
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- 80 Mhz
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SPI Mode
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-- QIO
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-- DIO
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-- DOUT
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+
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+- QIO (Quad I/O): Uses 4 data lines for input/output, allowing faster data transfer between the microcontroller and flash memory.
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+- DIO (Dual I/O): Uses 2 data lines for input/output, offering a balance between speed and compatibility.
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+- DOUT (Dual Output): Uses 2 data lines but only for output (reading from flash), typically slower than DIO and QIO.
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+
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+
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| Model | SPI Speed | SPI Mode | Speed |
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| ------- | --------- | -------- | --------- |
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@@ -23,13 +26,16 @@ SPI Mode
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## NWI1139
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-SPI = 40Mhz, SPI Mode = DOUT, speed up to 1.5M (1 500 000, for CH340)
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+SPI = 40Mhz, SPI Mode = DOUT, speed up to ~1.5M (1 500 000, for CH340)
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![](11-51-17-17-04-2023.png)
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+- [[NWI1139-dat]]
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## NWI1126
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+- [[NWI1126-dat]] - [[ESP32-C3-dat]]
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+
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### ESP32-C3 Factory Mode
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- Chip = ESP32-C3
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@@ -55,6 +61,13 @@ wiring with USB-TTL cable
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![](36-05-18-06-02-2023.png)
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+## Upload
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+
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+ESP32-C3
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+- flash speed 80M
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+- flash mode DIO
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+![](2024-01-24-16-49-18.png)
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+
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## Common Error
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@@ -64,13 +77,6 @@ wiring with USB-TTL cable
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5-chip efuse check fail
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-## Upload
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-
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-ESP32-C3
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-- flash speed 80M
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-- flash mode DIO
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-![](2024-01-24-16-49-18.png)
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-
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## ref