Search found 8 matches

If you have slave select lines, then there is no problem.... Smile

To use select with the #use spi, you need to have done a PIN SELECT first for the select pin. However you may find it better if you a ...

So I enabled the SS pin in my slave #USE SPI directive (pin B0 on my chip) and modified the ISR to be the following:

#INT_SPI1
void spi1_isr(void) {
data = spi_xfer_in(SPI_PO ...

Thanks for the awesome feedback it really helps. Unfortunately I am stuck with my current hardware so I will have to find a way to "make it work". I have 4 SPI slaves connected in series (no ...

Ran into another issue with this code today. My system has 8 of these processors daisy chained together. While the previous code works perfectly with only one master and slave, when I connect a second ...

The interrupt must _always_ read the data.
The interrupt is saying 'there is a character needing to be read'.
You are ignoring this if PIN_C4 is high. This will mean that the peripheral won't inter ...

A slave, only sends when the data is clocked out by the master.

So when you write in the SPI routine, a byte is loaded 'waiting to send', and this won't actually be sent, till the master sends you ...

Lets try cleaning up some stuff first:

1. You don't need to disable the SPI interrupt while in it. The HW does this for you.

2. You don't need to clear the interrupt flag in the interrupt. CC ...

Hello,

I am using two dsPIC33EV256GM104 processors as a master and slave with SPI but am having troubles implementing an interrupt driven slave. I am currently using PCD compiler v5.071c. I am tryi ...