parent
35d2b9e665
commit
3c16014641
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@ -64,12 +64,11 @@ void spi_lcd_9bit_write(uint8 spi_no,uint8 high_bit,uint8 low_8bit)
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* Description : SPI master initial function for common byte units transmission
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* Description : SPI master initial function for common byte units transmission
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* Parameters : uint8 spi_no - SPI module number, Only "SPI" and "HSPI" are valid
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* Parameters : uint8 spi_no - SPI module number, Only "SPI" and "HSPI" are valid
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*******************************************************************************/
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*******************************************************************************/
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void spi_master_init(uint8 spi_no)
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void spi_master_init(uint8 spi_no, unsigned cpol, unsigned cpha, unsigned databits, uint32_t clock)
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{
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{
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uint32 regvalue;
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uint32 regvalue;
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if(spi_no>1) return; //handle invalid input number
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if(spi_no>1) return; //handle invalid input number
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if(spi_no==SPI){
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if(spi_no==SPI){
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WRITE_PERI_REG(PERIPHS_IO_MUX, 0x005);
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WRITE_PERI_REG(PERIPHS_IO_MUX, 0x005);
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@ -86,13 +85,33 @@ void spi_master_init(uint8 spi_no)
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PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDO_U, 2);//configure io to spi mode
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PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDO_U, 2);//configure io to spi mode
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}
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}
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SET_PERI_REG_MASK(SPI_USER(spi_no), SPI_CS_SETUP|SPI_CS_HOLD|SPI_USR_COMMAND|SPI_USR_MOSI);
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SET_PERI_REG_MASK(SPI_USER(spi_no), SPI_CS_SETUP|SPI_CS_HOLD|SPI_DOUTDIN|SPI_USR_MOSI);
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CLEAR_PERI_REG_MASK(SPI_USER(spi_no), SPI_FLASH_MODE);
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//set clock polarity
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// TODO: This doesn't work
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//if (cpol == 1) {
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// SET_PERI_REG_MASK(SPI_CTRL2(spi_no), (SPI_CK_OUT_HIGH_MODE<<SPI_CK_OUT_HIGH_MODE_S));
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//} else {
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// SET_PERI_REG_MASK(SPI_CTRL2(spi_no), (SPI_CK_OUT_LOW_MODE<<SPI_CK_OUT_LOW_MODE_S));
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//}
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//os_printf("SPI_CTRL2 is %08x\n",READ_PERI_REG(SPI_CTRL2(spi_no)));
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//set clock phase
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if (cpha == 1) {
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SET_PERI_REG_MASK(SPI_USER(spi_no), SPI_CK_OUT_EDGE|SPI_CK_I_EDGE);
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} else {
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CLEAR_PERI_REG_MASK(SPI_USER(spi_no), SPI_CK_OUT_EDGE|SPI_CK_I_EDGE);
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}
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CLEAR_PERI_REG_MASK(SPI_USER(HSPI), SPI_FLASH_MODE|SPI_WR_BYTE_ORDER|SPI_USR_MISO|
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SPI_RD_BYTE_ORDER|SPI_USR_ADDR|SPI_USR_COMMAND|SPI_USR_DUMMY);
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//clear Daul or Quad lines transmission mode
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//clear Daul or Quad lines transmission mode
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CLEAR_PERI_REG_MASK(SPI_CTRL(spi_no), SPI_QIO_MODE|SPI_DIO_MODE|SPI_DOUT_MODE|SPI_QOUT_MODE);
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CLEAR_PERI_REG_MASK(SPI_CTRL(spi_no), SPI_QIO_MODE|SPI_DIO_MODE|SPI_DOUT_MODE|SPI_QOUT_MODE);
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// SPI clock=CPU clock/8
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WRITE_PERI_REG(SPI_CLOCK(spi_no),
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WRITE_PERI_REG(SPI_CLOCK(spi_no),
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((1&SPI_CLKDIV_PRE)<<SPI_CLKDIV_PRE_S)|
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((3&SPI_CLKCNT_N)<<SPI_CLKCNT_N_S)|
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((3&SPI_CLKCNT_N)<<SPI_CLKCNT_N_S)|
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((1&SPI_CLKCNT_H)<<SPI_CLKCNT_H_S)|
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((1&SPI_CLKCNT_H)<<SPI_CLKCNT_H_S)|
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((3&SPI_CLKCNT_L)<<SPI_CLKCNT_L_S)); //clear bit 31,set SPI clock div
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((3&SPI_CLKCNT_L)<<SPI_CLKCNT_L_S)); //clear bit 31,set SPI clock div
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@ -109,21 +128,19 @@ void spi_master_init(uint8 spi_no)
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* Parameters : uint8 spi_no - SPI module number, Only "SPI" and "HSPI" are valid
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* Parameters : uint8 spi_no - SPI module number, Only "SPI" and "HSPI" are valid
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* uint8 data- transmitted data
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* uint8 data- transmitted data
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*******************************************************************************/
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*******************************************************************************/
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void spi_mast_byte_write(uint8 spi_no,uint8 data)
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void spi_mast_byte_write(uint8 spi_no, uint8 *data)
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{
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{
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uint32 regvalue;
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if(spi_no>1) return; //handle invalid input number
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if(spi_no>1) return; //handle invalid input number
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while(READ_PERI_REG(SPI_CMD(spi_no))&SPI_USR);
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while(READ_PERI_REG(SPI_CMD(spi_no))&SPI_USR);
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WRITE_PERI_REG(SPI_W0(HSPI), *data);
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CLEAR_PERI_REG_MASK(SPI_USER(spi_no), SPI_USR_MOSI|SPI_USR_MISO);
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//SPI_FLASH_USER2 bit28-31 is cmd length,cmd bit length is value(0-15)+1,
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SET_PERI_REG_MASK(SPI_CMD(spi_no), SPI_USR);
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// bit15-0 is cmd value.
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while(READ_PERI_REG(SPI_CMD(spi_no))&SPI_USR);
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WRITE_PERI_REG(SPI_USER2(spi_no),
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((7&SPI_USR_COMMAND_BITLEN)<<SPI_USR_COMMAND_BITLEN_S)|((uint32)data));
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*data = (uint8)(READ_PERI_REG(SPI_W0(spi_no))&0xff);
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SET_PERI_REG_MASK(SPI_CMD(spi_no), SPI_USR);
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}
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}
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/******************************************************************************
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/******************************************************************************
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* FunctionName : spi_byte_write_espslave
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* FunctionName : spi_byte_write_espslave
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@ -18,9 +18,9 @@ void spi_lcd_mode_init(uint8 spi_no);
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void spi_lcd_9bit_write(uint8 spi_no,uint8 high_bit,uint8 low_8bit);
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void spi_lcd_9bit_write(uint8 spi_no,uint8 high_bit,uint8 low_8bit);
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//spi master init funtion
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//spi master init funtion
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void spi_master_init(uint8 spi_no);
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void spi_master_init(uint8 spi_no, unsigned cpol, unsigned cpha, unsigned databits, uint32_t clock);
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//use spi send 8bit data
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//use spi send 8bit data
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void spi_mast_byte_write(uint8 spi_no,uint8 data);
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void spi_mast_byte_write(uint8 spi_no,uint8 *data);
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//transmit data to esp8266 slave buffer,which needs 16bit transmission ,
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//transmit data to esp8266 slave buffer,which needs 16bit transmission ,
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//first byte is master command 0x04, second byte is master data
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//first byte is master command 0x04, second byte is master data
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@ -39,6 +39,11 @@
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#define SPI_MISO_DELAY_NUM_S 18
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#define SPI_MISO_DELAY_NUM_S 18
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#define SPI_MISO_DELAY_MODE 0x00000003
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#define SPI_MISO_DELAY_MODE 0x00000003
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#define SPI_MISO_DELAY_MODE_S 16
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#define SPI_MISO_DELAY_MODE_S 16
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#define SPI_CK_OUT_HIGH_MODE 0x0000000F
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#define SPI_CK_OUT_HIGH_MODE_S 12
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#define SPI_CK_OUT_LOW_MODE 0x0000000F
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#define SPI_CK_OUT_LOW_MODE_S 8
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#define SPI_CLOCK(i) (REG_SPI_BASE(i) + 0x18)
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#define SPI_CLOCK(i) (REG_SPI_BASE(i) + 0x18)
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#define SPI_CLK_EQU_SYSCLK (BIT(31))
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#define SPI_CLK_EQU_SYSCLK (BIT(31))
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#define SPI_CLKDIV_PRE 0x00001FFF
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#define SPI_CLKDIV_PRE 0x00001FFF
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@ -73,6 +78,7 @@
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#define SPI_CS_SETUP (BIT(5))
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#define SPI_CS_SETUP (BIT(5))
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#define SPI_CS_HOLD (BIT(4))
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#define SPI_CS_HOLD (BIT(4))
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#define SPI_FLASH_MODE (BIT(2))
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#define SPI_FLASH_MODE (BIT(2))
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#define SPI_DOUTDIN (BIT(0))
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#define SPI_USER1(i) (REG_SPI_BASE(i) + 0x20)
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#define SPI_USER1(i) (REG_SPI_BASE(i) + 0x20)
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#define SPI_USR_ADDR_BITLEN 0x0000003F
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#define SPI_USR_ADDR_BITLEN 0x0000003F
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@ -55,6 +55,7 @@
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#define LUA_USE_MODULES_NET
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#define LUA_USE_MODULES_NET
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#define LUA_USE_MODULES_PWM
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#define LUA_USE_MODULES_PWM
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#define LUA_USE_MODULES_I2C
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#define LUA_USE_MODULES_I2C
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#define LUA_USE_MODULES_SPI
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#define LUA_USE_MODULES_TMR
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#define LUA_USE_MODULES_TMR
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#define LUA_USE_MODULES_ADC
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#define LUA_USE_MODULES_ADC
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#define LUA_USE_MODULES_UART
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#define LUA_USE_MODULES_UART
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@ -45,6 +45,14 @@
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#define ROM_MODULES_I2C
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#define ROM_MODULES_I2C
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#endif
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#endif
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#if defined(LUA_USE_MODULES_SPI)
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#define MODULES_SPI "spi"
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#define ROM_MODULES_SPI \
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_ROM(MODULES_SPI, luaopen_spi, spi_map)
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#else
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#define ROM_MODULES_SPI
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#endif
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#if defined(LUA_USE_MODULES_TMR)
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#if defined(LUA_USE_MODULES_TMR)
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#define MODULES_TMR "tmr"
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#define MODULES_TMR "tmr"
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#define ROM_MODULES_TMR \
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#define ROM_MODULES_TMR \
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@ -106,6 +114,7 @@
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ROM_MODULES_PWM \
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ROM_MODULES_PWM \
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ROM_MODULES_WIFI \
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ROM_MODULES_WIFI \
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ROM_MODULES_I2C \
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ROM_MODULES_I2C \
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ROM_MODULES_SPI \
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ROM_MODULES_TMR \
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ROM_MODULES_TMR \
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ROM_MODULES_NODE \
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ROM_MODULES_NODE \
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ROM_MODULES_FILE \
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ROM_MODULES_FILE \
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@ -0,0 +1,166 @@
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// Module for interfacing with the SPI interface
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//#include "lua.h"
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#include "lualib.h"
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#include "lauxlib.h"
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#include "platform.h"
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#include "auxmods.h"
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#include "lrotable.h"
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// Lua: = spi.setup( id, mode, cpol, cpha, databits, clock )
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static int spi_setup( lua_State *L )
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{
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unsigned id = luaL_checkinteger( L, 1 );
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unsigned mode = luaL_checkinteger( L, 2 );
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unsigned cpol = luaL_checkinteger( L, 3 );
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unsigned cpha = luaL_checkinteger( L, 4 );
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unsigned databits = luaL_checkinteger( L, 5 );
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uint32_t clock = luaL_checkinteger( L, 6 );
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MOD_CHECK_ID( spi, id );
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if (mode != PLATFORM_SPI_SLAVE && mode != PLATFORM_SPI_MASTER) {
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return luaL_error( L, "wrong arg type" );
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}
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if (cpol != PLATFORM_SPI_CPOL_LOW && cpol != PLATFORM_SPI_CPOL_HIGH) {
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return luaL_error( L, "wrong arg type" );
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}
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if (cpha != PLATFORM_SPI_CPHA_LOW && cpha != PLATFORM_SPI_CPHA_HIGH) {
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return luaL_error( L, "wrong arg type" );
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}
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if (databits != PLATFORM_SPI_DATABITS_8 && databits != PLATFORM_SPI_DATABITS_16) {
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return luaL_error( L, "wrong arg type" );
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}
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u32 res = platform_spi_setup(id, mode, cpol, cpha, databits, clock);
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lua_pushinteger( L, res );
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return 1;
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}
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// Lua: wrote = spi.send( id, data1, [data2], ..., [datan] )
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// data can be either a string, a table or an 8-bit number
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static int spi_send( lua_State *L )
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{
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unsigned id = luaL_checkinteger( L, 1 );
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const char *pdata;
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size_t datalen, i;
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int numdata;
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u32 wrote = 0;
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unsigned argn;
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MOD_CHECK_ID( spi, id );
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if( lua_gettop( L ) < 2 )
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return luaL_error( L, "wrong arg type" );
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for( argn = 2; argn <= lua_gettop( L ); argn ++ )
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{
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// lua_isnumber() would silently convert a string of digits to an integer
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// whereas here strings are handled separately.
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if( lua_type( L, argn ) == LUA_TNUMBER )
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{
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numdata = ( int )luaL_checkinteger( L, argn );
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if( numdata < 0 || numdata > 255 )
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return luaL_error( L, "wrong arg range" );
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platform_spi_send_recv( id, numdata );
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wrote ++;
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}
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else if( lua_istable( L, argn ) )
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{
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datalen = lua_objlen( L, argn );
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for( i = 0; i < datalen; i ++ )
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{
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lua_rawgeti( L, argn, i + 1 );
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numdata = ( int )luaL_checkinteger( L, -1 );
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lua_pop( L, 1 );
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if( numdata < 0 || numdata > 255 )
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return luaL_error( L, "wrong arg range" );
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platform_spi_send_recv( id, numdata );
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}
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wrote += i;
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if( i < datalen )
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break;
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}
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else
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{
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pdata = luaL_checklstring( L, argn, &datalen );
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for( i = 0; i < datalen; i ++ )
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platform_spi_send_recv( id, pdata[ i ] );
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wrote += i;
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if( i < datalen )
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break;
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}
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}
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lua_pushinteger( L, wrote );
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return 1;
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}
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// Lua: read = spi.recv( id, size )
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static int spi_recv( lua_State *L )
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{
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unsigned id = luaL_checkinteger( L, 1 );
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u32 size = ( u32 )luaL_checkinteger( L, 2 ), i;
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luaL_Buffer b;
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spi_data_type data;
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MOD_CHECK_ID( spi, id );
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if (size == 0) {
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return 0;
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}
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luaL_buffinit( L, &b );
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for (i=0; i<size; i++) {
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data = platform_spi_send_recv(id, 0xFF);
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luaL_addchar( &b, ( char )data);
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}
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luaL_pushresult( &b );
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return 1;
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}
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// Module function map
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#define MIN_OPT_LEVEL 2
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#include "lrodefs.h"
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const LUA_REG_TYPE spi_map[] =
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{
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{ LSTRKEY( "setup" ), LFUNCVAL( spi_setup ) },
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{ LSTRKEY( "send" ), LFUNCVAL( spi_send ) },
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{ LSTRKEY( "recv" ), LFUNCVAL( spi_recv ) },
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#if LUA_OPTIMIZE_MEMORY > 0
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{ LSTRKEY( "MASTER" ), LNUMVAL( PLATFORM_SPI_MASTER ) },
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{ LSTRKEY( "SLAVE" ), LNUMVAL( PLATFORM_SPI_SLAVE) },
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{ LSTRKEY( "CPHA_LOW" ), LNUMVAL( PLATFORM_SPI_CPHA_LOW) },
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{ LSTRKEY( "CPHA_HIGH" ), LNUMVAL( PLATFORM_SPI_CPHA_HIGH) },
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{ LSTRKEY( "CPOL_LOW" ), LNUMVAL( PLATFORM_SPI_CPOL_LOW) },
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{ LSTRKEY( "CPOL_HIGH" ), LNUMVAL( PLATFORM_SPI_CPOL_HIGH) },
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{ LSTRKEY( "DATABITS_8" ), LNUMVAL( PLATFORM_SPI_DATABITS_8) },
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{ LSTRKEY( "DATABITS_16" ), LNUMVAL( PLATFORM_SPI_DATABITS_16) },
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#endif // #if LUA_OPTIMIZE_MEMORY > 0
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{ LNILKEY, LNILVAL }
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};
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LUALIB_API int luaopen_spi( lua_State *L )
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{
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#if LUA_OPTIMIZE_MEMORY > 0
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return 0;
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#else // #if LUA_OPTIMIZE_MEMORY > 0
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luaL_register( L, AUXLIB_SPI, spi_map );
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// Add constants
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MOD_REG_NUMBER( L, "MASTER", PLATFORM_SPI_MASTER);
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MOD_REG_NUMBER( L, "SLAVE", PLATFORM_SPI_SLAVE);
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MOD_REG_NUMBER( L, "CPHA_LOW" , PLATFORM_SPI_CPHA_LOW);
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MOD_REG_NUMBER( L, "CPHA_HIGH", PLATFORM_SPI_CPHA_HIGH);
|
||||||
|
MOD_REG_NUMBER( L, "CPOL_LOW" , PLATFORM_SPI_CPOL_LOW);
|
||||||
|
MOD_REG_NUMBER( L, "CPOL_HIGH", PLATFORM_SPI_CPOL_HIGH);
|
||||||
|
MOD_REG_NUMBER( L, "DATABITS_8" , PLATFORM_SPI_DATABITS_8);
|
||||||
|
MOD_REG_NUMBER( L, "DATABITS_16" , PLATFORM_SPI_DATABITS_16);
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
#endif // #if LUA_OPTIMIZE_MEMORY > 0
|
||||||
|
}
|
||||||
|
|
|
@ -8,7 +8,7 @@
|
||||||
#include "flash_api.h"
|
#include "flash_api.h"
|
||||||
// Number of resources (0 if not available/not implemented)
|
// Number of resources (0 if not available/not implemented)
|
||||||
#define NUM_GPIO GPIO_PIN_NUM
|
#define NUM_GPIO GPIO_PIN_NUM
|
||||||
#define NUM_SPI 1
|
#define NUM_SPI 2
|
||||||
#define NUM_UART 1
|
#define NUM_UART 1
|
||||||
#define NUM_PWM GPIO_PIN_NUM
|
#define NUM_PWM GPIO_PIN_NUM
|
||||||
#define NUM_ADC 1
|
#define NUM_ADC 1
|
||||||
|
|
|
@ -435,6 +435,20 @@ int platform_i2c_recv_byte( unsigned id, int ack ){
|
||||||
return r;
|
return r;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
// *****************************************************************************
|
||||||
|
// SPI platform interface
|
||||||
|
uint32_t platform_spi_setup( unsigned id, int mode, unsigned cpol, unsigned cpha, unsigned databits, uint32_t clock)
|
||||||
|
{
|
||||||
|
spi_master_init(id, cpol, cpha, databits, clock);
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
spi_data_type platform_spi_send_recv( unsigned id, spi_data_type data )
|
||||||
|
{
|
||||||
|
spi_mast_byte_write(id, &data);
|
||||||
|
return data;
|
||||||
|
}
|
||||||
|
|
||||||
// ****************************************************************************
|
// ****************************************************************************
|
||||||
// Flash access functions
|
// Flash access functions
|
||||||
|
|
||||||
|
|
|
@ -84,13 +84,23 @@ int platform_can_recv( unsigned id, uint32_t *canid, uint8_t *idtype, uint8_t *l
|
||||||
// SPI enable/disable
|
// SPI enable/disable
|
||||||
#define PLATFORM_SPI_ENABLE 1
|
#define PLATFORM_SPI_ENABLE 1
|
||||||
#define PLATFORM_SPI_DISABLE 0
|
#define PLATFORM_SPI_DISABLE 0
|
||||||
|
// SPI clock phase
|
||||||
|
#define PLATFORM_SPI_CPHA_LOW 0
|
||||||
|
#define PLATFORM_SPI_CPHA_HIGH 1
|
||||||
|
// SPI clock polarity
|
||||||
|
#define PLATFORM_SPI_CPOL_LOW 0
|
||||||
|
#define PLATFORM_SPI_CPOL_HIGH 1
|
||||||
|
// SPI databits
|
||||||
|
#define PLATFORM_SPI_DATABITS_8 8
|
||||||
|
#define PLATFORM_SPI_DATABITS_16 16
|
||||||
|
|
||||||
|
|
||||||
// Data types
|
// Data types
|
||||||
typedef uint32_t spi_data_type;
|
typedef uint32_t spi_data_type;
|
||||||
|
|
||||||
// The platform SPI functions
|
// The platform SPI functions
|
||||||
int platform_spi_exists( unsigned id );
|
int platform_spi_exists( unsigned id );
|
||||||
uint32_t platform_spi_setup( unsigned id, int mode, uint32_t clock, unsigned cpol, unsigned cpha, unsigned databits );
|
uint32_t platform_spi_setup( unsigned id, int mode, unsigned cpol, unsigned cpha, unsigned databits, uint32_t clock);
|
||||||
spi_data_type platform_spi_send_recv( unsigned id, spi_data_type data );
|
spi_data_type platform_spi_send_recv( unsigned id, spi_data_type data );
|
||||||
void platform_spi_select( unsigned id, int is_select );
|
void platform_spi_select( unsigned id, int is_select );
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue