prenticedavid
commented
5 years ago I would be happier if you had verified your wiring with LCD_ID_readreg first.
Here is your SPECIAL
#elif defined(USE_NIKJAYSWAL_BLUEPILL) && (defined(ARDUINO_GENERIC_STM32F103C) || defined(ARDUINO_BLUEPILL_F103C8))
#warning Using USE_NIKJAYSWAL_BLUEPILL
//LCD pins |D7 |D6 |D5 |D4 |D3 |D2 |D1 |D0 | |RD |WR |RS |CS |RST|
//STM32 pin |PB15|PB14|PB11|PB10|PB9|PB8|PB7|PB6| |PA3|PA2|PA1|PA0|PA4|
#if defined(ARDUINO_BLUEPILL_F103C8) //regular CMSIS libraries
#define REGS(x) x
#define GPIO_INIT() { RCC->APB2ENR |= RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN | RCC_APB2ENR_IOPCEN | RCC_APB2ENR_IOPDEN | RCC_APB2ENR_AFIOEN; \
AFIO->MAPR |= AFIO_MAPR_SWJ_CFG_1;}
#else //weird Maple libraries
#define REGS(x) regs->x
#endif
#define WRITE_DELAY { }
#define READ_DELAY { RD_ACTIVE; }
#define GROUP_MODE(port, reg, mask, val) {port->REGS(reg) = (port->REGS(reg) & ~(mask)) | ((mask)&(val)); }
#define GP_OUT(port, reg, mask) GROUP_MODE(port, reg, mask, 0x33333333)
#define GP_INP(port, reg, mask) GROUP_MODE(port, reg, mask, 0x44444444)
#define PIN_OUTPUT(port, pin) {\
if (pin < 8) {GP_OUT(port, CRL, 0xF<<((pin)<<2));} \
else {GP_OUT(port, CRH, 0xF<<((pin&7)<<2));} \
}
#define PIN_INPUT(port, pin) { \
if (pin < 8) { GP_INP(port, CRL, 0xF<<((pin)<<2)); } \
else { GP_INP(port, CRH, 0xF<<((pin&7)<<2)); } \
}
#define PIN_HIGH(port, pin) (port)-> REGS(BSRR) = (1<<(pin))
#define PIN_LOW(port, pin) (port)-> REGS(BSRR) = (1<<((pin)+16))
#define RD_PORT GPIOA
#define RD_PIN 3
#define WR_PORT GPIOA
#define WR_PIN 2
#define CD_PORT GPIOA
#define CD_PIN 1
#define CS_PORT GPIOA
#define CS_PIN 0
#define RESET_PORT GPIOA
#define RESET_PIN 4
// configure macros for the data pins
#define BMASK 0xCFC0
#define write_8(d) { GPIOB->REGS(BSRR) = BMASK << 16; \
GPIOB->REGS(BSRR) = (((d) & 0xC0) << 8); \
GPIOB->REGS(BSRR) = (((d) & 0x3F) << 6); \
}
#define read_8() (((GPIOB->REGS(IDR) & (0xC000)) >> 8) | ((GPIOB->REGS(IDR) & (0x0FC0)) >> 6))
// PB15-PB14,PB11-PB8 PB7-PB6
#define setWriteDir() {GP_OUT(GPIOB, CRH, 0xFF00FFFF); GP_OUT(GPIOB, CRL, 0xFF000000); }
#define setReadDir() {GP_INP(GPIOB, CRH, 0xFF00FFFF); GP_INP(GPIOB, CRL, 0xFF000000); }
#define write8(x) { write_8(x); WRITE_DELAY; WR_STROBE; }
#define write16(x) { uint8_t h = (x)>>8, l = x; write8(h); write8(l); }
#define READ_8(dst) { RD_STROBE; READ_DELAY; dst = read_8(); RD_IDLE; }
#define READ_16(dst) { uint8_t hi; READ_8(hi); READ_8(dst); dst |= (hi << 8); }Untested.
David.
Edit corrected ARDUINO_NUCLEO_F103C8 with ARDUINO_BLUEPILL_F103C8
nikjayswal
Pinmapping not working on stm32f103 LCD ID : 0x4747 (HX8347D)
I want to change pins from this :------
define LCD_CS A3 // Chip Select goes to Analog 3
define LCD_CD A2 // Command/Data goes to Analog 2
define LCD_WR A1 // LCD Write goes to Analog 1
define LCD_RD A0 // LCD Read goes to Analog 0
define LCD_RESET A4 // Can alternately just connect to Arduino's reset pin
To this : -----
define LCD_CS PA0 // Chip Select goes to Analog 3
define LCD_CD PA1 // Command/Data goes to Analog 2
define LCD_WR PA2 // LCD Write goes to Analog 1
define LCD_RD PA3 // LCD Read goes to Analog 0
define LCD_RESET PA4 // Can alternately just connect to Arduino's reset pin
define LCD_D0 PB6
define LCD_D1 PB7
define LCD_D2 PB8
define LCD_D3 PB9
define LCD_D4 PB10
define LCD_D5 PB11
define LCD_D6 PB14
define LCD_D7 PB15