fb7415151b
Fix SdInfo example and file.timestamp. Remove Syscall::yield and SysCall::halt. Major restructuring for future portability to RTOS systems and RPI Pico.
47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
// An example of an external chip select functions.
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// Useful for port expanders or replacement of the standard GPIO functions.
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//
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#include "SdFat.h"
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// SD_CHIP_SELECT_MODE must be set to one or two in SdFat/SdFatConfig.h.
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// A value of one allows optional replacement and two requires replacement.
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#if SD_CHIP_SELECT_MODE == 1 || SD_CHIP_SELECT_MODE == 2
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// SD chip select pin.
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#define SD_CS_PIN SS
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#define SD_CONFIG SdSpiConfig(SD_CS_PIN, SHARED_SPI, SD_SCK_MHZ(50))
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SdFat sd;
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// Stats to verify function calls.
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uint32_t initCalls = 0;
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uint32_t writeCalls = 0;
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//------------------------------------------------------------------------------
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// Modify these functions for your port expander or custom GPIO library.
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void sdCsInit(SdCsPin_t pin) {
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initCalls++;
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pinMode(pin, OUTPUT);
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}
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void sdCsWrite(SdCsPin_t pin, bool level) {
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writeCalls++;
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digitalWrite(pin, level);
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}
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//------------------------------------------------------------------------------
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void setup() {
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Serial.begin(9600);
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if (!sd.begin(SD_CONFIG)) {
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sd.initErrorHalt(&Serial);
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}
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sd.ls(&Serial, LS_SIZE);
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Serial.print(F("sdCsInit calls: "));
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Serial.println(initCalls);
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Serial.print(F("sdCsWrite calls: "));
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Serial.println(writeCalls);
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}
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//------------------------------------------------------------------------------
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void loop() {}
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#else // SD_CHIP_SELECT_MODE == 1 || SD_CHIP_SELECT_MODE == 2
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#error SD_CHIP_SELECT_MODE must be one or two in SdFat/SdFatConfig.h
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#endif // SD_CHIP_SELECT_MODE == 1 || SD_CHIP_SELECT_MODE == 2
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