PSRAM in M5Stack FIRE

[MhageGH]

Hardware:

Board: M5Stack FIRE
Core Installation/update date: 4/Aug/2018
IDE name: Arduino IDE
Flash Frequency: no menu for M5Stack FIRE
Upload Speed: 921600
PSRAM: Enabled

Description:

I can't allocate PSRAM by ps_malloc().
On the other hand, I can allocate internal RAM by malloc().
I tried with two hardware. Same problem happened.

Sketch:

const int N = 10;
uint16_t* buf;

void setup(){
Serial.begin(115200);
if (buf = (uint16_t*)ps_malloc(sizeof(uint16_t)*N)) Serial.println("ps_malloc succeeded");
else Serial.println("ps_malloc failed");
}

void loop() {
}

Debug Messages:

ps_malloc failed

[lbernstone]

If you don't have psram on your device, arduino is not going to be able to use it.

[MhageGH]

Thanks for comment, lbernstone.
M5Stack FIRE has 4M-PSRAM.

[lbernstone]

If you turn core debugging level to verbose do you see that psramInit succeeds? I am waiting on my wrover board, so I can't help much there at the moment.

[MhageGH]

Thanks. I tried. I see that paramInit failed. I get below error message.
[W][esp32-hal-psram.c:30] psramInit(): PSRAM init failed!

By the way, someone told me that I should try to cut UART2 PINs because they are share with wires to PSRAM in this board. I tried, but it didn't work. I got the same error massage.

[MhageGH]

Someone told me that I should try to connect UART2 PINs to GND with 240Ω. I tried, but it didn't work. I got the same error massage.

[manecolooper]

Hi, tested that sketch in esp wrover module and it Works, ps_malloc succeeded

[MhageGH]

Thank you, manecolooper.
M5Stack Inc. announced psram issue of M5Stack FIRE.
They will start the replacement service for it.

[lbernstone]

Can you please close the issue, then?