ESP32 Forum

Hi all,
i’m trying to use the sd_mmc to read sdcard (1bit mode && 4 bit mode) with esp32, i have my own board,
pin are connected as standard (like the esprover kit 4.1, but without diode), i have pullup (10k) on

SD_dat0 (io2),
sd_dat1 (io4),
sd_dat2 (io12),
sd_dat3 (io13),
sd_cmd (io15),
sd_clk (ioio14),
sd_cd (io34)

the code initalize pins:

pinMode(SD_DAT3, PULLUP); // 13
pinMode(SD_CMD, PULLUP); // 15
pinMode(SD_DAT0, PULLUP); // 2
pinMode(SD_DAT1, PULLUP); // 4
pinMode(SD_DAT2, PULLUP); // 12

bool card_present = SD_MMC.begin("/sdcard", true);
if (!card_present)
{
Serial.println("Card Mount Failed");
return;
}
the error is:

E (859) sdmmc_common: sdmmc_init_ocr: send_op_cond (1) returned 0x107
[E][SD_MMC.cpp:97] begin(): Failed to initialize the card (263). Make sure SD card lines have pull-up resistors in place.

i read a lot on internet about this problem,
i not have wire, connector soldered directly to my board
set registry on esp32 to 3.3v (espefuse.py --port com7 set_flash_voltage 3.3V)
the pins use for sd-card are used only for sd-card, nothing more attached
put togheter io2+io2 (not functioning)
tried with 2 equals sd-card (16gb sdhc) formatted fat32 with partition of 512mb (noluck)
tried with another type (8gb) formatted fat32 with partition 512mb (no luck)
set SD_MMC.begin parameters for 1bit or 4bit
changed in SD_MCC.cpp:
line 62 to -> host.max_freq_khz = SDMMC_FREQ_PROBING
to power the board not use usb
tried to set SPI prior initialize sdmmc

i'm doing all this inside platformio/arduino, i had also another project with espressif IDF to check is there are the same problem, and yes is the same, this is the log:

(i do cut&paste of https://github.com/espressif/esp-idf/bl ... ple_main.c
set
slot_config.width = 1;
host.max_freq_khz = SDMMC_FREQ_PROBING;//SDMMC_FREQ_HIGHSPEED;
host.flags = SDMMC_HOST_FLAG_1BIT;
)

15:17:52.423 > rst:0x1 (POWERON_RESET),boot:0x3f (SPI_FAST_FLASH_BOOT)
15:17:52.439 > ets Jun 8 2016 00:22:57
15:17:52.839 >
15:17:52.839 > rst:0x10 (RTCWDT_RTC_RESET),boot:0x3f (SPI_FAST_FLASH_BOOT)
15:17:52.839 > configsip: 0, SPIWP:0xee
15:17:52.839 > clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
15:17:52.855 > mode:DIO, clock div:2
15:17:52.855 > load:0x3fff0018,len:4
15:17:52.855 > load:0x3fff001c,len:7012
15:17:52.855 > load:0x40078000,len:14076
15:17:52.855 > load:0x40080400,len:4304
15:17:52.871 > entry 0x400806e8
15:17:52.871 > ␛[0;32mI (72) boot: Chip Revision: 0␛[0m
15:17:52.871 > ␛[0;32mI (32) boot: ESP-IDF GIT-NOTFOUND 2nd stage bootloader␛[0m
15:17:52.871 > ␛[0;32mI (32) boot: compile time 12:20:24␛[0m
15:17:52.887 > ␛[0;32mI (32) boot: Enabling RNG early entropy source...␛[0m
15:17:52.887 > ␛[0;32mI (37) boot: SPI Speed : 40MHz␛[0m
15:17:52.887 > ␛[0;32mI (42) boot: SPI Mode : DIO␛[0m
15:17:52.887 > ␛[0;32mI (46) boot: SPI Flash Size : 4MB␛[0m
15:17:52.904 > ␛[0;32mI (50) boot: Partition Table:␛[0m
15:17:52.904 > ␛[0;32mI (53) boot: ## Label Usage Type ST Offset Length␛[0m
15:17:52.904 > ␛[0;32mI (60) boot: 0 nvs WiFi data 01 02 00009000 00006000␛[0m
15:17:52.919 > ␛[0;32mI (68) boot: 1 phy_init RF data 01 01 0000f000 00001000␛[0m
15:17:52.919 > ␛[0;32mI (75) boot: 2 factory factory app 00 00 00010000 00100000␛[0m
15:17:52.935 > ␛[0;32mI (83) boot: End of partition table␛[0m
15:17:52.935 > ␛[0;32mI (87) esp_image: segment 0: paddr=0x00010020 vaddr=0x3f400020 size=0x09928 ( 39208) map␛[0m
15:17:52.951 > ␛[0;32mI (110) esp_image: segment 1: paddr=0x00019950 vaddr=0x3ffb0000 size=0x02154 ( 8532) load␛[0m
15:17:52.951 > ␛[0;32mI (114) esp_image: segment 2: paddr=0x0001baac vaddr=0x40080000 size=0x00400 ( 1024) load␛[0m
15:17:52.967 > ␛[0;32mI (117) esp_image: segment 3: paddr=0x0001beb4 vaddr=0x40080400 size=0x0415c ( 16732) load␛[0m
15:17:52.967 > ␛[0;32mI (133) esp_image: segment 4: paddr=0x00020018 vaddr=0x400d0018 size=0x1c5a8 (116136) map␛[0m
15:17:52.983 > ␛[0;32mI (176) esp_image: segment 5: paddr=0x0003c5c8 vaddr=0x4008455c size=0x06148 ( 24904) load␛[0m
15:17:53.016 > ␛[0;32mI (193) boot: Loaded app from partition at offset 0x10000␛[0m
15:17:53.031 > ␛[0;32mI (194) boot: Disabling RNG early entropy source...␛[0m
15:17:53.047 > ␛[0;32mI (194) cpu_start: Pro cpu up.␛[0m
15:17:53.047 > ␛[0;32mI (198) cpu_start: Application information:␛[0m
15:17:53.047 > ␛[0;32mI (202) cpu_start: Project name: test_mmc_idf␛[0m
15:17:53.063 > ␛[0;32mI (208) cpu_start: App version: 1␛[0m
15:17:53.063 > ␛[0;32mI (212) cpu_start: Compile time: May 10 2020 12:19:59␛[0m
15:17:53.063 > ␛[0;32mI (218) cpu_start: ELF file SHA256: 3bafca7d9efc3e1b...␛[0m
15:17:53.079 > ␛[0;32mI (224) cpu_start: ESP-IDF: GIT-NOTFOUND␛[0m
15:17:53.079 > ␛[0;32mI (230) cpu_start: Starting app cpu, entry point is 0x40081384␛[0m
15:17:53.079 > ␛[0;32mI (0) cpu_start: App cpu up.␛[0m
15:17:53.095 > ␛[0;32mI (240) heap_init: Initializing. RAM available for dynamic allocation:␛[0m
15:17:53.095 > ␛[0;32mI (247) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM␛[0m
15:17:53.095 > ␛[0;32mI (253) heap_init: At 3FFB3250 len 0002CDB0 (179 KiB): DRAM␛[0m
15:17:53.112 > ␛[0;32mI (259) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM␛[0m
15:17:53.112 > ␛[0;32mI (266) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM␛[0m
15:17:53.127 > ␛[0;32mI (272) heap_init: At 4008A6A4 len 0001595C (86 KiB): IRAM␛[0m
15:17:53.127 > ␛[0;32mI (278) cpu_start: Pro cpu start user code␛[0m
15:17:53.127 > ␛[0;32mI (297) spi_flash: detected chip: gd␛[0m
15:17:53.143 > ␛[0;32mI (297) spi_flash: flash io: dio␛[0m
15:17:53.143 > ␛[0;32mI (297) cpu_start: Starting scheduler on PRO CPU.␛[0m
15:17:53.143 > ␛[0;32mI (0) cpu_start: Starting scheduler on APP CPU.␛[0m
15:17:53.160 > ␛[0;32mI (305) example: Initializing SD card␛[0m
15:17:53.160 > ␛[0;32mI (305) example: Using SDMMC peripheral␛[0m
15:17:53.160 > ␛[0;31mE (335) sdmmc_common: sdmmc_init_ocr: send_op_cond (1) returned 0x107␛[0m
15:17:53.176 > ␛[0;31mE (335) example: Failed to initialize the card (ESP_ERR_TIMEOUT). Make sure SD card lines have pull-up resistors in place.␛[0m

i have loosed many days to find solution
i not know what else try or what can be, no ideas at the moment

someone can try to point me in the right direction?
thanks

In order not to create a new topic, is it possible to reassign the sd_dat2 signal to another free one?