ST-LINK V3 MODS not connect with target device STM32F0.

[parth kothiya]

I have recently purchase ST-LINK V3 MODS

I am trying to connect it using SWD protocol using STM32CUBE PROGRAMMER software but it gives error DEV_TARGET_CMD_ERR

if i use STLINK V2 then it works fine.

how can i solve this?

is there any connection problem?

my connection pins on ST-LINK V3 MODS

pin no--------function

left side of STLINK V3

4 - T_JTMS/T_SWDIO

8 - GND

13 - T_JCLK/T_SWCLK

right side of STLINK V3

30 - T_Vcc

[Tesla DeLorean]

Not at 24 MHz, try 1 or 2 MHz

Doesn't have buffers, doesn't need target voltage​

[parth kothiya]

Error: No STM32 target found!

11:43:38 : ST-LINK SN : 0027001F4D46500F20373033

11:43:38 : ST-LINK FW : V3J8M3B5S1

11:43:38 : Board : STLINK-V3MODS

11:43:38 : Voltage : 0.00V

still not connecting

[parth kothiya]

basically it is a clock speed issue

12:37:03 : ST-LINK SN : 0027001F4D46500F20373033

12:37:03 : ST-LINK FW : V3J8M3B5S1

12:37:03 : Board : STLINK-V3MODS

12:37:03 : Voltage : 0.03V

12:37:03 : SWD freq : 50 KHz

12:37:03 : Connect mode: Normal

12:37:03 : Reset mode : Software reset

12:37:03 : Device ID : 0x440

12:37:03 : Revision ID : Rev 2.0

12:37:04 : UPLOADING OPTION BYTES DATA ...

12:37:04 : Bank : 0x00

12:37:04 : Address : 0x1ffff800

12:37:04 : Size : 16 Bytes

12:37:04 : Error: Uploading Option Bytes bank: 0 failed

12:37:04 : Error: Initializing the Option Bytes failed

12:37:04 : Disconnected from device.

at 5KHz connected success fully

[parth kothiya]

out put voltage and current of STLINK V3 is not sufficient for higher clock speed?

i have placed cable to connect my board with STLINK V3 cable length is (30 cm).

how can i increase clock speed of 1-2 MHz.

ST LINK V2 works fine with 4MHz but ST LINK V3 works fine at 5KHz with same board and cable length.