Difference between STM32F042 vs STM32F051 Programing Regarding

[APate.3]

First I'm using stm32f042 MCU and develop holl program and then i change controller stm32f051 in that system not work properly can you give me contact no in india for technical support

[Tesla DeLorean]

The site (main ST) search should be able to list local/regional sales/support offices. Level of support might be measured, but should at least be able to direct you to local contractors or domain experts.​

[APate.3]

i try that you told but they not responding . that s why I'm taking help you. Please give me responsible contact in india

[Tesla DeLorean]

Perhaps you can narrow that down a little. What about via your account manager, or your source of purchase?

T​o get support on the forum you're going to need to get more specific on the "not working" aspect of your problem, and provide details on the debugging and diagnostic testing you've done.