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add functions to read out the flash config

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Serial.print(F("Flash Chip Size: "));
Serial.println(ESP.getFlashChipSize());

Serial.print(F("Flash Chip Speed: "));
Serial.println(ESP.getFlashChipSpeed());

Serial.print(F("Flash Chip Mode: 0x"));
Serial.println(ESP.getFlashChipMode(), HEX);
This commit is contained in:
Markus Sattler
2015-04-30 10:42:17 +02:00
parent b4610462d1
commit 724baf7910
3 changed files with 93 additions and 6 deletions
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72
cores/esp8266/Esp.cpp
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@ -89,11 +89,6 @@ uint32_t EspClass::getChipId(void)
return system_get_chip_id();
}
uint32_t EspClass::getFlashChipId(void)
{
return spi_flash_get_id();
}
const char * EspClass::getSDKversion(void)
{
return system_get_sdk_version();
@ -113,3 +108,70 @@ uint8_t EspClass::getCPUfreqMHz(void)
{
return system_get_cpu_freq();
}
uint32_t EspClass::getFlashChipId(void)
{
return spi_flash_get_id();
}
uint32_t EspClass::getFlashChipSize(void)
{
uint32_t data;
uint8_t * bytes = (uint8_t *) &data;
// read first 4 byte (magic byte + flash config)
if(spi_flash_read(0x0000, &data, 4) == SPI_FLASH_RESULT_OK) {
switch((bytes[3] & 0xF0) >> 4) {
case 0x0: // 4 Mbit (512KB)
return (512 * kB);
case 0x1: // 2 MBit (256KB)
return (256 * kB);
case 0x2: // 8 MBit (1MB)
return (1 * MB);
case 0x3: // 16 MBit (2MB)
return (2 * MB);
case 0x4: // 32 MBit (4MB)
return (4 * MB);
default: // fail?
return 0;
}
}
return 0;
}
uint32_t EspClass::getFlashChipSpeed(void)
{
uint32_t data;
uint8_t * bytes = (uint8_t *) &data;
// read first 4 byte (magic byte + flash config)
if(spi_flash_read(0x0000, &data, 4) == SPI_FLASH_RESULT_OK) {
switch(bytes[3] & 0x0F) {
case 0x0: // 40 MHz
return (40 * MHz);
case 0x1: // 26 MHz
return (26 * MHz);
case 0x2: // 20 MHz
return (20 * MHz);
case 0xF: // 80 MHz
return (80 * MHz);
default: // fail?
return 0;
}
}
return 0;
}
FlashMode_t EspClass::getFlashChipMode(void)
{
FlashMode_t mode = FM_FAILD;
uint32_t data;
uint8_t * bytes = (uint8_t *) &data;
// read first 4 byte (magic byte + flash config)
if(spi_flash_read(0x0000, &data, 4) == SPI_FLASH_RESULT_OK) {
mode = (FlashMode_t) bytes[2];
if(mode > FM_DOUT) {
mode = FM_FAILD;
}
}
return mode;
}