Gpio for Pico calc, how to make firmware for Pico calc

PicoCalc
,
1

I want to create custom firmware that can read Pico calc SD and I want more features (display audio etc) later

2

a good starting point would be picocalc_text_starter

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3

What’s that?
I’ve seen allot of fatfs repos but I want to be a bit more low level and for a file system if there is one to be made by me so I just want to be able to read a page (512b) and write a sector (4096b)

4

May not be as low level as you are looking for.

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5

Thanks :+1:, checked out the repo, it had almost everything :smiley:, for the SD I can use sd_card.h /sd_card.c, haven’t checked out the rest yet, although I still need to know if there is a gpio sheet for Pico calc

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6

I put this together the other day. This might help

on board pico LED

PICO_LED = board.LED

Picocalc usbc UART0 pins

UART0_TX = board.GP0 # UART0_TX ----->> USBC
UART0_RX = board.GP1 # UART0_RX <<----- USBC

PSRAM SPIO

PSRAM_TX = board.GP2 # RAM_TX
PSRAM_RX = board.GP3 # RAM_RX
PSRAM_IO2 = board.GP4 # RAM_IO2
PSRAM_IO3 = board.GP5 # RAM_IO3
PSRAM_CS = board.GP20 # RAM_CSa
PSRAM_SCK = board.GP21 # RAM_SCK

I2C keyboaard interface for the south bridge (i2c1)

SB_SDA = board.GP6 # I2C1_SDA <<----->> M_I2C1_SDA 4.7k pullups.
SB_SCL = board.GP7 # I2C1_SCL <<----->> M_I2C1_SCL 4.7k pullups.

Picocalc UART1 pins

UART1_TX = board.GP8 # UART1_TX ----->> M_UART3_RX
UART1_RX = board.GP9 # UART1_RX <<----- M_UART3_TX

PicoCalc LCD pins SPI1

LCD_CLK = board.GP10 # SPI1_SCK
LCD_MOSI = board.GP11 # SPI1_TX
LCD_MISO = board.GP12 # SPI1_RX Not sure if this is used in setup/init
LCD_CS = board.GP13 # SPI1_CS
LCD_DC = board.GP14 # LCD_DC
LCD_RESET = board.GP15 # LCD_RST

PicoCalc SD card pins SPI0

SD_MISO = board.GP16 # SPI0_TX
SD_CS = board.GP17 # SPI0_CS
SD_SCK = board.GP18 # SPI0_SCK
SD_MOSI = board.GP19 # SPI0_RX
SD_DETECT = board.GP22 # SPI0_DET

AUDIO

PWM_L = board.GP26 # PWM_L
PWM_R = board.GP27 # PWM_R

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