mirror of
https://github.com/esp8266/Arduino.git
synced 2025-04-25 20:02:37 +03:00
95 lines
2.1 KiB
C++
95 lines
2.1 KiB
C++
#ifndef HSPI_H
|
|
#define HSPI_H
|
|
|
|
#include "SPIImpl.h"
|
|
#include "SPIdef.h"
|
|
|
|
extern "C" {
|
|
#include "spi_register.h"
|
|
#include "ets_sys.h"
|
|
#include "osapi.h"
|
|
#include "os_type.h"
|
|
}
|
|
|
|
class HSPI : public SPIImpl
|
|
{
|
|
public:
|
|
virtual void begin()
|
|
{
|
|
//bit9 of PERIPHS_IO_MUX should be cleared when HSPI clock doesn't equal CPU clock
|
|
WRITE_PERI_REG(PERIPHS_IO_MUX, 0x105);
|
|
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDI_U, FUNC_HSPIQ_MISO); // gpio12
|
|
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTCK_U, FUNC_HSPID_MOSI); // gpio13
|
|
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTMS_U, FUNC_HSPI_CLK); // gpio14
|
|
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDO_U, FUNC_HSPI_CS0); // gpio15
|
|
|
|
|
|
SET_PERI_REG_MASK(SPI_USER(HSPI), SPI_CS_SETUP|SPI_CS_HOLD|SPI_USR_COMMAND);
|
|
CLEAR_PERI_REG_MASK(SPI_USER(HSPI), SPI_FLASH_MODE);
|
|
|
|
// SPI clock=CPU clock/8
|
|
WRITE_PERI_REG(SPI_CLOCK(HSPI),
|
|
((1&SPI_CLKDIV_PRE)<<SPI_CLKDIV_PRE_S)|
|
|
((3&SPI_CLKCNT_N)<<SPI_CLKCNT_N_S)|
|
|
((1&SPI_CLKCNT_H)<<SPI_CLKCNT_H_S)|
|
|
((3&SPI_CLKCNT_L)<<SPI_CLKCNT_L_S)); //clear bit 31,set SPI clock div
|
|
|
|
|
|
SET_PERI_REG_MASK(SPI_USER(spi_no), SPI_CS_SETUP|SPI_CS_HOLD|SPI_USR_COMMAND|SPI_USR_MOSI);
|
|
CLEAR_PERI_REG_MASK(SPI_USER(spi_no), SPI_FLASH_MODE);
|
|
|
|
//clear Daul or Quad lines transmission mode
|
|
CLEAR_PERI_REG_MASK(SPI_CTRL(spi_no), SPI_QIO_MODE|SPI_DIO_MODE|SPI_DOUT_MODE|SPI_QOUT_MODE);
|
|
|
|
WRITE_PERI_REG(SPI_CLOCK(spi_no),
|
|
((3&SPI_CLKCNT_N)<<SPI_CLKCNT_N_S)|
|
|
((1&SPI_CLKCNT_H)<<SPI_CLKCNT_H_S)|
|
|
((3&SPI_CLKCNT_L)<<SPI_CLKCNT_L_S)); //clear bit 31,set SPI clock div
|
|
|
|
//set 8bit output buffer length, the buffer is the low 8bit of register"SPI_FLASH_C0"
|
|
WRITE_PERI_REG(SPI_USER1(spi_no),
|
|
((7&SPI_USR_MOSI_BITLEN)<<SPI_USR_MOSI_BITLEN_S)|
|
|
((7&SPI_USR_MISO_BITLEN)<<SPI_USR_MISO_BITLEN_S));
|
|
|
|
}
|
|
|
|
virtual void end()
|
|
{
|
|
|
|
}
|
|
|
|
virtual void setBitOrder(uint8_t bitOrder)
|
|
{
|
|
|
|
}
|
|
|
|
virtual void setDataMode(uint8_t dataMode)
|
|
{
|
|
|
|
}
|
|
|
|
virtual void setClockDivider(uint8_t clockDiv)
|
|
{
|
|
|
|
}
|
|
|
|
virtual uint8_t transfer(uint8_t data)
|
|
{
|
|
|
|
}
|
|
|
|
virtual void transfer(void *buf, size_t count)
|
|
{
|
|
|
|
}
|
|
|
|
private:
|
|
uint32_t _clkDiv;
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
#endif//HSPI_H
|