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tor-heredero-tokenring/RTE/Hesso_pack/ext_keyboard.c

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Hello TOR 2k24 Have fun 🚀
2024-04-10 17:17:57 +00:00
#include "stm32f7xx_hal.h"
#include "ext_keyboard.h"
#define TRUE 1
#define FALSE 0
#define NORMAL 0
#define SHIFT 1
#define CONTROL 2
#define ALT 3
#define TABULATOR 0x09
#define BACKSPACE 0x08
#define ESCAPE 0x1B
#define CR 0x0D
#define F1 0x10
#define F2 0x11
#define F3 0x12
#define F4 0x13
#define F5 0x14
#define F6 0x15
#define F7 0x16
#define F8 0x17
#define F9 0x18
#define F10 0x19
#define F11 0x1A
#define F12 0x1B
static SPI_HandleTypeDef keyboard; // SPI keyboard handle
uint8_t ext_kbChar; // exported to global use
uint8_t scan;
static uint32_t newChar=0; // internal flag
uint8_t release;
uint8_t state;
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
uint8_t ScanCodeAnalyse(uint8_t scan)
{
switch(scan)
{
/*---------------------------------------------------------------------------*/
case 0xF0: release = TRUE; return 0 ; /* release key code */
/*---------------------------------------------------------------------------*/
case 0x14: if (release == FALSE)
state = CONTROL;
else
{
state = NORMAL;
release = FALSE;
}
return 0x00;
/*---------------------------------------------------------------------------*/
case 0x11: if (release == FALSE)
state = ALT;
else
{
state = NORMAL;
release = FALSE;
}
return 0x00;
/*---------------------------------------------------------------------------*/
case 0x12:
case 0x58:
case 0x59: if (release == FALSE)
state = SHIFT;
else
{
state = NORMAL;
release = FALSE;
}
return 0x00;
}
/*---------------------------------------------------------------------------*/
if (release == TRUE)
{
release = FALSE;
return 0x00;
}
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
switch(scan)
{
/*---------------------------------------------------------------------------*/
case 0x05: return F1; // 'F1' to 'F12'
/*---------------------------------------------------------------------------*/
case 0x06: return F2;
/*---------------------------------------------------------------------------*/
case 0x04: return F3;
/*---------------------------------------------------------------------------*/
case 0x0c: return F4;
/*---------------------------------------------------------------------------*/
case 0x03: return F5;
/*---------------------------------------------------------------------------*/
case 0x0B: return F6;
/*---------------------------------------------------------------------------*/
case 0x83: return F7;
/*---------------------------------------------------------------------------*/
case 0x0A: return F8;
/*---------------------------------------------------------------------------*/
case 0x01: return F9;
/*---------------------------------------------------------------------------*/
case 0x09: return F10;
/*---------------------------------------------------------------------------*/
case 0x78: return F11;
/*---------------------------------------------------------------------------*/
case 0x07: return F12;
/*---------------------------------------------------------------------------*/
case 0x16: switch (state) /* key '1' */
{
case NORMAL : return '1';
case CONTROL : return 0;
case SHIFT : return '!';
}
/*---------------------------------------------------------------------------*/
case 0x1E: switch (state) /* key '2' */
{
case NORMAL : return '2';
case CONTROL : return 0;
case SHIFT : return '@';
}
/*---------------------------------------------------------------------------*/
case 0x26: switch (state) /* key '3' */
{
case NORMAL : return '3';
case CONTROL : return 0;
case SHIFT : return '#';
}
/*---------------------------------------------------------------------------*/
case 0x25: switch (state) /* key '4' */
{
case NORMAL : return '4';
case CONTROL : return 0;
case SHIFT : return '$';
}
/*---------------------------------------------------------------------------*/
case 0x2E: switch (state) /* key '5' */
{
case NORMAL : return '5';
case CONTROL : return 0;
case SHIFT : return '%';
}
/*---------------------------------------------------------------------------*/
case 0x36: switch (state) /* key '6' */
{
case NORMAL : return '6';
case CONTROL : return 0;
case SHIFT : return '^';
}
/*---------------------------------------------------------------------------*/
case 0x6C:
case 0x3D: switch (state) /* key '7' */
{
case NORMAL : return '7';
case CONTROL : return 0;
case SHIFT : return '&';
}
/*---------------------------------------------------------------------------*/
case 0x75:
case 0x3E: switch (state) /* key '8' */
{
case NORMAL : return '8';
case CONTROL : return 0;
case SHIFT : return '*';
}
/*---------------------------------------------------------------------------*/
case 0x7D:
case 0x46: switch (state) /* key '9' */
{
case NORMAL : return '9';
case CONTROL : return 0;
case SHIFT : return '(';
}
/*---------------------------------------------------------------------------*/
case 0x7C:
case 0x45: switch (state) /* key '0' */
{
case NORMAL : return '0';
case CONTROL : return 0;
case SHIFT : return ')';
}
/*---------------------------------------------------------------------------*/
case 0x7E: switch (state) /* key '*' */
{
case NORMAL : return '*';
case CONTROL : return F11;
case SHIFT : return '?';
default : return 0xBF; /* ? vertical flipped */
}
/*---------------------------------------------------------------------------*/
case 0x4E: switch (state) /* key '-' */
{
case NORMAL : return '-';
case CONTROL : return 0;
case SHIFT : return '_';
default : return 0x00;
}
/*---------------------------------------------------------------------------*/
case 0x65: return 0x1B; /* End button -> Escape command */
/*---------------------------------------------------------------------------*/
case 0x15: switch (state) /* key 'Q' */
{
case SHIFT : return 'Q';
case CONTROL : return 0x11;
default : return 'q';
}
/*---------------------------------------------------------------------------*/
case 0x1D: switch (state) /* key 'W' */
{
case SHIFT : return 'W';
case CONTROL : return 0x17;
default : return 'w';
}
/*---------------------------------------------------------------------------*/
case 0x24: switch (state) /* key 'E' */
{
case SHIFT : return 'E';
case CONTROL : return 0x05;
default : return 'e';
}
/*---------------------------------------------------------------------------*/
case 0x2D: switch (state) /* key 'R' */
{
case SHIFT : return 'R';
case CONTROL : return 0x12;
default : return 'r';
}
/*---------------------------------------------------------------------------*/
case 0x2C: switch (state) /* key 'T' */
{
case SHIFT : return 'T';
case CONTROL : return 0x14;
default : return 't';
}
/*---------------------------------------------------------------------------*/
case 0x35: switch (state) /* key 'Z' */
{
case SHIFT : return 'Y';
case CONTROL : return 0x1A;
default : return 'y';
}
/*---------------------------------------------------------------------------*/
case 0x6B:
case 0x3C: switch (state) /* key 'U' */
{
case SHIFT : return 'U';
case CONTROL : return 0x15;
default : return 'u';
}
/*---------------------------------------------------------------------------*/
case 0x73:
case 0x43: switch (state) /* key 'I' */
{
case SHIFT : return 'I';
case CONTROL : return 0x09;
default : return 'i';
}
/*---------------------------------------------------------------------------*/
case 0x74:
case 0x44: switch (state) /* key 'O' */
{
case SHIFT : return 'O';
case CONTROL : return 0x0F;
default : return 'o';
}
/*---------------------------------------------------------------------------*/
case 0x7B:
case 0x4D: switch (state) /* key 'P' */
{
case SHIFT : return 'P';
case CONTROL : return 0x10;
default : return 'p';
}
/*---------------------------------------------------------------------------*/
case 0x5B: switch (state) /* key '<27>' */
{
case SHIFT : return '}';
case ALT : return 0;
default : return ']';
}
/*---------------------------------------------------------------------------*/
case 0x66: return 0x08; /* Backspace */
/*---------------------------------------------------------------------------*/
case 0x0D: return 0x09; /* Horizontal tabulator */
/*---------------------------------------------------------------------------*/
case 0x1C: switch (state) /* key 'A' */
{
case SHIFT : return 'A';
case CONTROL : return 0x01;
default : return 'a';
}
/*---------------------------------------------------------------------------*/
case 0x1B: switch (state) /* key 'S' */
{
case SHIFT : return 'S';
case CONTROL : return 0x13;
default : return 's';
}
/*---------------------------------------------------------------------------*/
case 0x23: switch (state) /* key 'D' */
{
case SHIFT : return 'D';
case CONTROL : return 0x04;
default : return 'd';
}
/*---------------------------------------------------------------------------*/
case 0x2B: switch (state) /* key 'F' */
{
case SHIFT : return 'F';
case CONTROL : return 0x06;
default : return 'f';
}
/*---------------------------------------------------------------------------*/
case 0x34: switch (state) /* key 'G' */
{
case SHIFT : return 'G';
case CONTROL : return 0x07;
default : return 'g';
}
/*---------------------------------------------------------------------------*/
case 0x33: switch (state) /* key 'H' */
{
case SHIFT : return 'H';
case CONTROL : return 0x08;
default : return 'h';
}
/*---------------------------------------------------------------------------*/
case 0x69:
case 0x3B: switch (state) /* key 'J' */
{
case SHIFT : return 'J';
case CONTROL : return 0x0A;
default : return 'j';
}
/*---------------------------------------------------------------------------*/
case 0x72:
case 0x42: switch (state) /* key 'K' */
{
case SHIFT : return 'K';
case CONTROL : return 0x0B;
default : return 'k';
}
/*---------------------------------------------------------------------------*/
case 0x7A:
case 0x4B: switch (state) /* key 'L' */
{
case SHIFT : return 'L';
case CONTROL : return 0x0C;
default : return 'l';
}
/*---------------------------------------------------------------------------*/
case 0x54: switch (state) /* key '[' */
{
case SHIFT : return '{';
case ALT : return 0; /* beta symbol */
default : return '[';
}
/*---------------------------------------------------------------------------*/
case 0x52: switch (state) /* key ''' */
{
case SHIFT : return '"';
case ALT : return 0;
default : return 0x27;
}
/*---------------------------------------------------------------------------*/
case 0x1A: switch (state) /* key 'Y' */
{
case SHIFT : return 'Z';
case CONTROL : return 0x19;
default : return 'z';
}
/*---------------------------------------------------------------------------*/
case 0x22: switch (state) /* key 'X' */
{
case SHIFT : return 'X';
case CONTROL : return 0x18;
default : return 'x';
}
/*---------------------------------------------------------------------------*/
case 0x21: switch (state) /* key 'C' */
{
case SHIFT : return 'C';
case CONTROL : return 0x03;
default : return 'c';
}
/*---------------------------------------------------------------------------*/
case 0x2A: switch (state) /* key 'V' */
{
case SHIFT : return 'V';
case CONTROL : return 0x16;
default : return 'v';
}
/*---------------------------------------------------------------------------*/
case 0x32: switch (state) /* key 'B' */
{
case SHIFT : return 'B';
case CONTROL : return 0x02;
default : return 'b';
}
/*---------------------------------------------------------------------------*/
case 0x31: switch (state) /* key 'N' */
{
case SHIFT : return 'N';
case CONTROL : return 0x0E;
default : return 'n';
}
/*---------------------------------------------------------------------------*/
case 0x70:
case 0x3A: switch (state) /* key 'M' */
{
case SHIFT : return 'M';
case CONTROL : return 0x0D;
default : return 'm';
}
/*---------------------------------------------------------------------------*/
case 0x41: switch (state) /* key ',' */
{
case SHIFT : return '<';
default : return ',';
}
/*---------------------------------------------------------------------------*/
case 0x49: switch (state) /* key '.' */
{
case SHIFT : return '>';
default : return '.';
}
/*---------------------------------------------------------------------------*/
case 0x5A: return 0x0D; /* Carriage return (Enter) */
/*---------------------------------------------------------------------------*/
case 0x29: return ' '; /* Spacebar */
/*---------------------------------------------------------------------------*/
case 0x63: switch (state) /* key 'UP ARROW' */
{
case SHIFT : return 'U';
default : return 'u';
}
/*---------------------------------------------------------------------------*/
case 0x60: switch (state) /* key 'DOWN ARROW' */
{
case SHIFT : return 'D';
default : return 'd';
}
/*---------------------------------------------------------------------------*/
case 0x61: switch (state) /* key 'LEFT ARROW' */
{
case SHIFT : return 'L';
default : return 'l';
}
/*---------------------------------------------------------------------------*/
case 0x6A: switch (state) /* key 'RIGHT ARROW' */
{
case SHIFT : return 'R';
default : return 'r';
}
/*---------------------------------------------------------------------------*/
case 0x0E: switch (state) /* key 'apostroph' */
{
case SHIFT : return '~';
default : return '`';
}
/*---------------------------------------------------------------------------*/
case 0x79:
case 0x4C: switch (state) /* key ';' */
{
case SHIFT : return ':';
default : return ';';
}
/*---------------------------------------------------------------------------*/
case 0x4A: switch (state) /* key '/' */
{
case SHIFT : return '?';
default : return '/';
}
/*---------------------------------------------------------------------------*/
case 0x5D: switch (state) /* key '\' */
{
case SHIFT : return '|';
default : return '\\';
}
/*---------------------------------------------------------------------------*/
case 0x55: switch (state) /* key '=' */
{
case SHIFT : return '+';
default : return '=';
}
}
}
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
void EXTI9_5_IRQHandler(void)
{
// read keyboard data and store it on global variable
HAL_GPIO_WritePin(GPIOI, GPIO_PIN_0, GPIO_PIN_RESET); // SPI CS activate
HAL_SPI_Receive(&keyboard,&scan,1,100); // SPI read
HAL_GPIO_WritePin(GPIOI, GPIO_PIN_0, GPIO_PIN_SET); // SPI CS desactivate
// process irq
HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_8); // clear irq and callback
ext_kbChar = ScanCodeAnalyse(scan);
if(ext_kbChar != 0)
{
newChar = 1;
}
}
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
void Ext_Keyboard_Init(void)
{
volatile uint8_t dummy;
GPIO_InitTypeDef GPIO_InitStruct;
/* Peripheral clock enable */
__HAL_RCC_GPIOI_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_SPI2_CLK_ENABLE();
/**SPI2 GPIO Configuration
PI1 ------> SPI2_SCK
PB14 ------> SPI2_MISO
PB15 ------> SPI2_MOSI
PI0 ------> /SPI_CB_SS
PF8 ------> /SPI_INT
*/
GPIO_InitStruct.Pin = GPIO_PIN_1;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_14|GPIO_PIN_15;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_8;
GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
keyboard.Instance = SPI2;
keyboard.Init.Mode = SPI_MODE_MASTER;
keyboard.Init.Direction = SPI_DIRECTION_2LINES;
keyboard.Init.DataSize = SPI_DATASIZE_8BIT;
keyboard.Init.CLKPolarity = SPI_POLARITY_HIGH;
keyboard.Init.CLKPhase = SPI_PHASE_1EDGE;
keyboard.Init.NSS = SPI_NSS_SOFT;
keyboard.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16; //3.333MHz -> (Fosc/4) / 16
keyboard.Init.FirstBit = SPI_FIRSTBIT_MSB;
keyboard.Init.TIMode = SPI_TIMODE_DISABLE;
keyboard.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
keyboard.Init.CRCPolynomial = 7;
keyboard.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
keyboard.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;
HAL_SPI_Init(&keyboard);
// dummy read to clear any glitch
HAL_GPIO_WritePin(GPIOI, GPIO_PIN_0, GPIO_PIN_RESET);
HAL_SPI_Receive(&keyboard,(uint8_t *)&dummy,1,10);
HAL_GPIO_WritePin(GPIOI, GPIO_PIN_0, GPIO_PIN_SET);
// enable interrupts on keyboard ISR
HAL_NVIC_SetPriority(EXTI9_5_IRQn,5,5);
HAL_NVIC_EnableIRQ(EXTI9_5_IRQn);
}
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
uint8_t Ext_Keyboard_Read(void)
{
while(newChar == 0) // wait new char coming
{}
newChar = 0; // clear it
return ext_kbChar; // return read char
}
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