PSoC™ 4 Forum Discussions

Dear cypress society,

Would you please prepare an application note that explains,

Hot to create our own custom profile and integrate our own ble write callbacks into soft,

Thanks in advance..

I was attempting to use snprintf to format floats into strings to print over UART and I ran into two issues.

Issue 1: "Use newlib-nano Float Formatting" doesn't work.

With the default settings it works perfectly for integers but attempting to use it with floats doesn't work even with the "Use newlib-nano Float Formatting" set to true it does not print the float.

Example:

Value of pi is:  to 2dp

In order to get it to include support for floating point printing I had to follow the instructions from http://www.cypress.com/?id=4&rID=87354 and add -u _printf_float to the command line manually and set "Use newlib-nano Float Formatting" to false.

Issue 2: Using snprintf with floats causes the PSoC  4 to hang unless the heap is increased to at least 256B

If you attempt to use snprintf (or sprintf) with floats the processor will jump to IntDefaultHandler and hang. In PSoC Creator 3.1 the default heap size was decreased to 128B from 256B which likely caused this issue.

I have attached a project that should reproduce these issues.

 I got CY8CKIT-042-BLE from cypress. I try to look for RGB Raw view example code. But i could not find?  Is it available to download?

Hi,

Are there any plans to offer the cypress PSoC BLE chips as surface mount modules like the well known "BR-LE4.0-D2A" with antenna onboard? Alternatively, does anyone know of a vendor that sells such a device? 

Thanks!