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fix SPI run on system clock

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This commit is contained in:
Markus Sattler
2015-05-08 15:27:32 +02:00
parent afdc5f1c84
commit db64fd9f98
2 changed files with 6 additions and 2 deletions
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6
hardware/esp8266com/esp8266/libraries/SPI/SPI.cpp
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@ -43,7 +43,6 @@ void SPIClass::begin() {
pinMode(MISO, SPECIAL); ///< GPIO12
pinMode(MOSI, SPECIAL); ///< GPIO13
GPMUX = 0x105; // note crash if SPI flash Frequency < 40MHz
SPI1C = 0;
setFrequency(1000000); ///< 1MHz
SPI1U = SPIUMOSI | SPIUDUPLEX | SPIUSSE;
@ -187,6 +186,11 @@ void SPIClass::setFrequency(uint32_t freq) {
}
void SPIClass::setClockDivider(uint32_t clockDiv) {
if(clockDiv == 0x80000000) {
GPMUX |= (1 << 9); // Set bit 9 if sysclock required
} else {
GPMUX &= ~(1 << 9);
}
SPI1CLK = clockDiv;
}

2
libraries/Adafruit_ILI9341/Adafruit_ILI9341.cpp
View File

@ -153,7 +153,7 @@ void Adafruit_ILI9341::writedata(uint8_t c) {
static inline void spi_begin(void) __attribute__((always_inline));
static inline void spi_begin(void) {
#ifdef ESP8266
SPI.beginTransaction(SPISettings(40000000, MSBFIRST, SPI_MODE0));
SPI.beginTransaction(SPISettings(80000000, MSBFIRST, SPI_MODE0));
#else
SPI.beginTransaction(SPISettings(8000000, MSBFIRST, SPI_MODE0));
#endif