Trying to change SPI driver compile error "error invalid use of incomplete type 'spi_t'"

[themindfactory]

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1. #include <SPI.h>
2.  
3. SPIClass spi;
4. SPISettings spiSettings = SPISettings(SPI_CLOCK, SPI_MSBFIRST, SPI_MODE);
5.  
6. void setup() {
7.   Serial.begin(500000);
8.   spi.begin(); //ck,miso,mosi,ss
9.   spi_t *s;
10.   s = spi.bus();
11.   s->dev->mosi_dlen.usr_mosi_dbitlen = 48 - 1;
12. }
13.  
14. void loop() {
15. }

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The s->dev->mosi_dlen.usr_mosi_dbitlen = 48 - 1; line is what is causing the error

I have tried various includes without luck. This was compiled with 1.01

RichardS

[themindfactory]

I think this is happening as spi_struct_t is not defined in any .h files, its defined within a .c file, so the compiler does not know the members, so having the pointer to the object in Arduino is kind of useless not being about to easily get to the members of the struct. I will tinker and see...

RichardS