Hi there Luckfox,
I went through the technical resources and while finding pin 1 with arrow isnt hard.
Deciding where actual VCC and GND seems very hard.. I saw the rockchip documentation but since this board has regulators I dont actuall know where i need to wire to.
Do you also know if I can connect to uart 0 and use a ftdi interface to program the EMMC of this board?
Looking forward to your reply.
Core 1106 vcc / GND and uart for programming?
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Luckfox Taylor Engineer
- Posts: 315
- Joined: 2023-12-09 3:09
Only VCC5V0_SYS needs to be powered. If RTC functionality is required, VCC3V3_RTC also needs to be powered.
VCC_3V3 and VCC_1V8 are output voltages provided by the internal DC-DC converter.
VCC_3V3 and VCC_1V8 are output voltages provided by the internal DC-DC converter.
That makes sense.Luckfox Taylor wrote: ↑2025-02-17 8:00 Only VCC5V0_SYS needs to be powered. If RTC functionality is required, VCC3V3_RTC also needs to be powered.
VCC_3V3 and VCC_1V8 are output voltages provided by the internal DC-DC converter.
I used a power supply and some narrow pins to power the board over pin 80 (positive) and 83 negative/gnd.
It takes 5v at 33 mili amps... possible no image is written on the board making it take almost no power.
How would i connect this to an ftdi to write an image to it? is it uart0 RX and TX? (pins 110 and 111?)
is there any jig you guys sell to ease the programming of this board or is it suggested to make a pcb.. presolder all connections and then do it all?
Or is it suggested to first buy the larger board then a core to intergrate it?
Last edited by masterpj55 on 2025-02-17 9:28, edited 1 time in total.
The Core1106 requires power to VCC5V0_SYS to operate normally, and both pin 26 (GPIO4_C0_z) and pin 74 (nPOR) must be pulled up.
You can refer to the schematic of the Luckfox Pico Ultra for this. Pin 45 is the Boot pin, and without a pull-up resistor, it will remain in maskrom mode. Pin 74 is the reset pin, and without a pull-up, the Core1106 will stay in reset state, which is why there is no current input.
Additionally, it is recommended to bring out pins 72 and 73 (DEBUG_UART) for easier access to system logs and to bring out USB for flashing the image.
In the future, we will release baseboard products based on the Core1106.
You can refer to the schematic of the Luckfox Pico Ultra for this. Pin 45 is the Boot pin, and without a pull-up resistor, it will remain in maskrom mode. Pin 74 is the reset pin, and without a pull-up, the Core1106 will stay in reset state, which is why there is no current input.
Additionally, it is recommended to bring out pins 72 and 73 (DEBUG_UART) for easier access to system logs and to bring out USB for flashing the image.
In the future, we will release baseboard products based on the Core1106.
Wiring it all worked like a charm.. pull ups booted the board.
The uart im figuring out now.
isnt it pint 106 and 107 for the RX and TX of uart1 Does it need to be combined with an FTDI interface to upload your code?
I would love to know these questions.. maybe my answers can be added to the support part of the luckfox 1106 and help a lot more getting started.
What is the minimum voltage I can supply to the core 1106 board?
can I get away with 3v to 3.3v?
Or would i need to boost to 5v ?
The uart im figuring out now.
isnt it pint 106 and 107 for the RX and TX of uart1 Does it need to be combined with an FTDI interface to upload your code?
I would love to know these questions.. maybe my answers can be added to the support part of the luckfox 1106 and help a lot more getting started.
What is the minimum voltage I can supply to the core 1106 board?
can I get away with 3v to 3.3v?
Or would i need to boost to 5v ?
Last edited by masterpj55 on 2025-02-23 2:40, edited 2 times in total.
The power supply must be provided with 5V to VCC5V0_SYS pins, and the core board will be converted to 3.3V and 1.8V outputs internally, and the core board cannot be powered by the VCC_3V3 of the core board.
106 and 107 correspond to UART1_TX_M1 and UART1_RX_M1, which is not the default FIQ_UART interface, and cannot enter the terminal or upload code through this interface by default.
Fix that the default FIQ_UART should be pin 72 and 73 (UART2_TX_M1 and UART2_RX_M1), which I described in my last post
106 and 107 correspond to UART1_TX_M1 and UART1_RX_M1, which is not the default FIQ_UART interface, and cannot enter the terminal or upload code through this interface by default.
Fix that the default FIQ_UART should be pin 72 and 73 (UART2_TX_M1 and UART2_RX_M1), which I described in my last post