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RPi SPI functionality and RPi fix for startWrite

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- Enabled use of hardware CS1 pin
- Removed custom_cs code for software driven CSN
- Modified BCM driver to allow use of hardware SPI pins not in use while
SPI is active.
- Updated constructor in examples
This commit is contained in:
TMRh20
2014-04-25 19:38:08 -06:00
parent cd8bb19dc3
commit 6530f954a1
10 changed files with 376 additions and 398 deletions
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RPi/RF24/examples/transfer.cpp
+18 -18
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@@ -7,7 +7,7 @@ TMRh20 2014
*/
/** General Data Transfer Rate Test
* This example demonstrates basic data transfer functionality with the
* This example demonstrates basic data transfer functionality with the
updated library. This example will display the transfer rates acheived using
the slower form of high-speed transfer using blocking-writes.
*/
@@ -26,14 +26,14 @@ using namespace std;
// CE Pin, CSN Pin, SPI Speed
// Setup for GPIO 22 CE and GPIO 25 CSN with SPI Speed @ 1Mhz
//RF24 radio(RPI_V2_GPIO_P1_22, RPI_V2_GPIO_P1_18, BCM2835_SPI_SPEED_1MHZ);
// Setup for GPIO 22 CE and CE1 CSN with SPI Speed @ 1Mhz
//RF24 radio(RPI_V2_GPIO_P1_22, RPI_V2_GPIO_P1_26, BCM2835_SPI_SPEED_1MHZ);
// Setup for GPIO 22 CE and CE0 CSN with SPI Speed @ 4Mhz
//RF24 radio(RPI_V2_GPIO_P1_15, BCM2835_SPI_CS0, BCM2835_SPI_SPEED_4MHZ);
//RF24 radio(RPI_V2_GPIO_P1_15, BCM2835_SPI_CS0, BCM2835_SPI_SPEED_4MHZ);
// Setup for GPIO 22 CE and CE1 CSN with SPI Speed @ 8Mhz
RF24 radio(RPI_V2_GPIO_P1_15, RPI_V2_GPIO_P1_26, BCM2835_SPI_SPEED_8MHZ);
// Setup for GPIO 22 CE and CE0 CSN with SPI Speed @ 8Mhz
RF24 radio(RPI_V2_GPIO_P1_15, RPI_V2_GPIO_P1_24, BCM2835_SPI_SPEED_8MHZ);
@@ -42,16 +42,16 @@ const uint64_t addresses[2] = { 0xABCDABCD71LL, 0x544d52687CLL };
bool role_ping_out = 1, role_pong_back = 0;
bool role = 0;
uint8_t data[32];
unsigned long startTime, stopTime, counter, rxTimer=0;
uint8_t data[32];
unsigned long startTime, stopTime, counter, rxTimer=0;
int main(int argc, char** argv){
// Print preamble:
printf("RF24/examples/Transfer/\n");
radio.begin(); // Setup and configure rf radio
radio.setChannel(1);
radio.setPALevel(RF24_PA_MAX);
@@ -67,7 +67,7 @@ int main(int argc, char** argv){
char myChar = {0};
cout << "Choose a role: Enter 0 for receiver, 1 for transmitter (CTRL+C to exit)\n>";
getline(cin,input);
if(input.length() == 1) {
myChar = input[0];
if(myChar == '0'){
@@ -86,8 +86,8 @@ int main(int argc, char** argv){
radio.openReadingPipe(1,addresses[0]);
radio.startListening();
}
for(int i=0; i<32; i++){
data[i] = rand() % 255; //Load the buffer with random data
}
@@ -105,7 +105,7 @@ int main(int argc, char** argv){
for(int i=0; i<cycles; i++){ //Loop through a number of cycles
data[0] = i; //Change the first byte of the payload for identification
if(!radio.writeFast(&data,32)){ //Write to the FIFO buffers
if(!radio.writeFast(&data,32)){ //Write to the FIFO buffers
counter++; //Keep count of failed payloads
}
}
@@ -115,16 +115,16 @@ int main(int argc, char** argv){
float numBytes = cycles*32;
float rate = numBytes / (stopTime - startTime);
printf("Transfer complete at %.2f KB/s \n\r",rate);
printf("%lu of %lu Packets Failed to Send\n\r",counter,cycles);
counter = 0;
counter = 0;
}
if(role == role_pong_back){
while(radio.available()){
while(radio.available()){
radio.read(&data,32);
counter++;
}