New Teensy

[mjs513]

Hi Bill Trying to get new Teensy T$ working on a SPI. Is there a way to specify what pins to use for SPI1, ie., MISO, MOSI, SCK? See this thread for the Teensy: https://forum.pjrc.com/threads/54711-Teensy-4-0-First-Beta-Test. Works right out of the box for SPI.

I set it up so:

define SD1_CONFIG SdSpiConfig(36, DEDICATED_SPI, SD_SCK_MHZ(18), &SPI1)

SdFs sd1;

but if it print out the pins I get: Assuming the SD chip select pin is: 36 Edit SD_CS_PIN to change the SD chip select pin.

SPI pins: MISO: 12 MOSI: 11 SCK: 13

EDIT: Guess one of the I am asking is how to setup builtin_SDCARD pins for different MCU and what settings do I need in the Config file

[greiman]

I don't have a Teensy 4.0 so I can't modify code for it.

I didn't ask Paul for a 4.0 beta since I was busy finishing SdFat V 2.0 beta. Guess I should try to get a Teensy 4.0.

Here is the section of SdFatConfig.h where SPI pins are defined for Teensy 3.5/3.6.

/** Enable SDIO driver if available. */
#if defined(__MK64FX512__) || defined(__MK66FX1M0__)
// Pseudo pin select for SDIO.
#ifndef BUILTIN_SDCARD
#define BUILTIN_SDCARD 254
#endif  // BUILTIN_SDCARD
// SPI for built-in card.
#ifndef SDCARD_SPI
#define SDCARD_SPI      SPI1
#define SDCARD_MISO_PIN 59
#define SDCARD_MOSI_PIN 61
#define SDCARD_SCK_PIN  60
#define SDCARD_SS_PIN   62
#endif  // SDCARD_SPI
#define HAS_SDIO_CLASS 1
#endif  // defined(__MK64FX512__) || defined(__MK66FX1M0__)

Here is the section of SdSpiTeensy3.cpp where the definitions are used.

void SdAltSpiDriver::begin(SdSpiConfig spiConfig) {
  m_csPin = spiConfig.csPin;
  m_spiSettings = SPI_LOW_SPEED;
  if (spiConfig.spiPort) {
    m_spi = spiConfig.spiPort;
#if defined(SDCARD_SPI) && defined(SDCARD_SS_PIN)
  } else if (m_csPin == SDCARD_SS_PIN) {
    m_spi = &SDCARD_SPI;
    m_spi->setMISO(SDCARD_MISO_PIN);
    m_spi->setMOSI(SDCARD_MOSI_PIN);
    m_spi->setSCK(SDCARD_SCK_PIN);
#endif  // defined(SDCARD_SPI) && defined(SDCARD_SS_PIN)
  } else {
    m_spi = &SPI;
  }
  pinMode(m_csPin, OUTPUT);
  digitalWrite(m_csPin, HIGH);
  m_spi->begin();
}

[mjs513]

Thanks BIll… I looked at that but couldn't figure out how it knew to use SdSpiTeensy3.cpp.

Anyway did a hack to SDFatConfig.h:

//------------------------------------------------------------------------------
/** Enable SDIO driver if available. */
#if defined(__MK64FX512__) || defined(__MK66FX1M0__) || defined(__IMXRT1062__)
// Pseudo pin select for SDIO.
#ifndef BUILTIN_SDCARD
#define BUILTIN_SDCARD 254
#endif  // BUILTIN_SDCARD
// SPI for built-in card.
#if defined(__IMXRT1062__)
    #ifndef SDCARD_SPI
    #define SDCARD_SPI      SPI1
    #define SDCARD_MISO_PIN 34
    #define SDCARD_MOSI_PIN 35
    #define SDCARD_SCK_PIN  37
    #define SDCARD_SS_PIN   36
    #endif  // SDCARD_SPI
    #define HAS_SDIO_CLASS 0
#else
    #ifndef SDCARD_SPI
    #define SDCARD_SPI      SPI1
    #define SDCARD_MISO_PIN 59
    #define SDCARD_MOSI_PIN 61
    #define SDCARD_SCK_PIN  60
    #define SDCARD_SS_PIN   62
    #endif  // SDCARD_SPI
    #define HAS_SDIO_CLASS 1
#endif
#endif  // defined(__MK64FX512__) || defined(__MK66FX1M0__)

But still didn't work:

SdFat version: 2.0.0

Assuming the SD is the only SPI device.
Edit DISABLE_CS_PIN to disable an SPI device.

Assuming the SD chip select pin is: 36
Edit SD_CS_PIN to change the SD chip select pin.

type any character to start

SD initialization failed.
Do not reformat the card!
Is the card correctly inserted?
Is there a wiring/soldering problem?
Is SD_CS_PIN set to the correct value?
Does another SPI device need to be disabled?
SD errorCode: SD_CARD_ERROR_CMD0 = 0x1
SD errorData = 0x0

type any character to start

```  So something else may be going on so I will leave it up to you..... :)  Thanks anyway, I thought there might be a simple workaround but I guess not.