arduino/esp8266
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CS is now software controlled. Otherwise ESP has problems with receiving data over SPI

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Sermus
2015-04-02 09:50:01 +03:00
parent 4626a9df80
commit fd4215aa22
4 changed files with 17 additions and 14 deletions
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13
libraries/SPI/HSPI.cpp
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@ -11,13 +11,6 @@ void HSPI::begin()
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
uint32_t regvalue = SPI_FLASH_DOUT;
regvalue |= SPI_DOUTDIN | SPI_CK_I_EDGE;
regvalue &= ~(BIT2 | SPI_FLASH_USR_ADDR | SPI_FLASH_USR_DUMMY | SPI_FLASH_USR_DIN | SPI_USR_COMMAND);
SET_PERI_REG_MASK(SPI_FLASH_USER(hspi_port), regvalue);
// SPI clock=CPU clock/8
WRITE_PERI_REG(SPI_FLASH_CLOCK(hspi_port),
@ -26,6 +19,12 @@ void HSPI::begin()
((1&SPI_CLKCNT_H)<<SPI_CLKCNT_H_S)|
((3&SPI_CLKCNT_L)<<SPI_CLKCNT_L_S)); //clear bit 31,set SPI clock div
uint32_t regvalue = SPI_FLASH_DOUT;
regvalue |= SPI_DOUTDIN | SPI_CK_I_EDGE;
regvalue &= ~(BIT2 | SPI_FLASH_USR_ADDR | SPI_FLASH_USR_DUMMY | SPI_FLASH_USR_DIN | SPI_USR_COMMAND);
WRITE_PERI_REG(SPI_FLASH_USER(hspi_port), regvalue);
WRITE_PERI_REG(SPI_FLASH_CTRL1(hspi_port), 0);
}
void HSPI::end()

2
libraries/SPI/include/HSPI.h
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@ -27,7 +27,7 @@ private:
uint32_t _clkDiv;
uint32_t *spi_fifo;
const uint32_t hspi_port = 1;
const uint32_t hspi_fifo_size = 32;
const uint32_t hspi_fifo_size = 16;
private:
inline void hspi_wait_ready(void){while (READ_PERI_REG(SPI_FLASH_CMD(hspi_port))&SPI_FLASH_USR);}