Embedded Game Programming

• Get the ESP-IDF v4.0
  • Follow Steps 1 through 3 of the Documentation
• Comment out line 303 of esp-idf/components/driver/sdspi_host.c to enable the shared SPI bus

// Initialize SPI bus
esp_err_t ret = spi_bus_initialize((spi_host_device_t)slot, &buscfg,
    slot_config->dma_channel);
if (ret != ESP_OK) {
    ESP_LOGD(TAG, "spi_bus_initialize failed with rc=0x%x", ret);
    //return ret;
}

• Modify the export.sh script in the game directory and fill out IDF_PATH and IDF_TOOLS_PATH
  • IDF_PATH is the extracted ESP-IDF
  • IDF_TOOLS_PATH is the path to the toolchain
• source export.sh