PSoC™ 5, 3 & 1 Forum Discussions

Hello,

I'd to know which is the best method in terms of speed to load a DMA from SRAM.

My DMA load 32 bit from SRAM and write this value into the Shift Register FIFO.

My instruction is:

CyDmaTdSetAddress(DMA_ShiftReg_TD[0], LO16((uint32)SSI_Tx.b), LO16((uint32)ShiftReg_interface_IN_FIFO_VAL_LSB_PTR));

where SSI_Tx is a union:

union {

         uint32 l;

         uint16 w[2];

         uint8 b[4];

} SSI_Tx;

If I should change my instruction with the follow:

CyDmaTdSetAddress(DMA_ShiftReg_TD[0], LO16((uint32)fifo), LO16((uint32)ShiftReg_interface_IN_FIFO_VAL_LSB_PTR));

where "fifo" is an array:

uint32 fifo[4];

it would be more quicly to tranfer data from DMA to ShiftRegister or not?

Thanks and regards

Manuel

Hi,

I'm developing some UART communication with PSoC 1 and I'm getting this error:

type error in argument 2 to `strstr'; found `pointer to __flash char' expected `pointer to char'

Code is as simple as this:

if (strstr(rx_buff,"OK") != NULL)
            {
               LED_On();
            }

Am I missing something? this "__flash" thing it's new to me on C.

also apears when I try to compare some char on an IF.

char test[3] = "OK"

if ( test == "OK") ---> this lines gives again __flash error.

Have been trying and reading texts but I don't get it, any documentation on __flash or an advice?

Thank you in advance.

I'm an EET student that is making the rather steep leaning curve on my own from the PIC18 family to the Cypress PSOC family. I've found I learn best by setting out on a project with a purpose and then learn from my face-plants along the way. Couple of hopefully trivial questions for the online masses to help move me along:

1) How can you reassign which device is used/assigned in the analog routing? For example, I have a project with SAR ADC input on port0 and an seperate SAR ADC input on port3. For some reason the IDE auto-router decided to assign my port0 input to SAR1 and my port3 input to SAR0, with some rather interesting and unnecessary routing complexity. I'm having trouble figuring out how to force my SAR to pin relationship so I can keep as many future routing options as open as possible.  What is the intended work-flow for this?

2) There are a number of references in the analog routing window for the DeltaSigma and SAR ADCs that I can't seem to find any explanation of what they are. On the DeltaSigma: "vcm" (voltage common mode??), "qtz_ref" (looks like it sets full-scale??). On the SAR: "Vrefhi_out" (looks very routable, so I really can't figure out what its purpose is??).

I'm sure this will not be the last time I ask for guidance from the group. I ask for a little forgiveness as I ask some likely rudimentary questions as I learn the ins and outs of the PSOC system. Thanks!

-EM

Hello Every one,

I am making a SPI master slave test program with certain conditions:

I want to do the following:

Master is sending an 8 bit data in order to start the communication.

At the same time slave will directly send some dummy value.

Then: if the master has send a value 0x02 then the slave should send 0x10u.

otherwise it will give 0x58u.

I write the program (please have a look at the attachment). But, some how its not working as it supposed to work! there must be something wrong.

I will look forward to hearing from you.

Hi,

I know I've been through this before. I am trying to us sprintf to print floating point numbers. I made the recommended changes to the Build Settings to Use newliv-nano Float Formatting, Addition Libraries m. Still not working. Returns nothing.

It is Creator 3.3 on a PSoC5.

Nick