Payloads

Spam UART A TX

543B

spam_uartA_payload.bin

FuseeGeleePayload - Spams UART-A-TX

6KB

uart_payload.c

FuseeGeleePayload - Spams UART-A-TX (source)

ECHO UART RX to TX

work in progress.

Hardware (PinMUX)

Looks like UARTA is using the ULPI pins as noted here (https://github.com/u-boot/u-boot/blob/master/arch/arm/mach-tegra/tegra30/pinmux.c#L238) So we know we can setup our UARTA and UARTD on the ULPI pins

#if defined UARTA /* set pinmux for uart-a (nexus 7) */ reg_write(PINMUX_BASE, PINMUX_AUX_ULPI_DATA0_0, 0b00000110); /* tx */ reg_write(PINMUX_BASE, PINMUX_AUX_ULPI_DATA1_0, 0b00100110); /* rx */ #elif defined UARTD /* set pinmux for uart-d (ouya */ reg_write(PINMUX_BASE, PINMUX_AUX_ULPI_CLK_0, 0b00000110); /* tx */ reg_write(PINMUX_BASE, PINMUX_AUX_ULPI_DIR_0, 0b00100110); /* rx */ #endif