nm_bus_wrapper_sam4s.c File Reference

This module contains NMC1000 bus wrapper APIs implementation.

Copyright (c) 2016-2021 Microchip Technology Inc. and its subsidiaries.

#include <stdio.h>
#include "bsp/include/nm_bsp.h"
#include "common/include/nm_common.h"
#include "bus_wrapper/include/nm_bus_wrapper.h"
#include "asf.h"
#include "conf_winc.h"

Macros
#define	NM_BUS_MAX_TRX_SZ   4096
#define	SPI_ASSERT_CS()   do {p_pio->PIO_CODR = 1 << (CONF_WINC_SPI_CS_GPIO & 0x1F);}while(0)
#define	SPI_DEASSERT_CS()   do {p_pio->PIO_SODR = 1 << (CONF_WINC_SPI_CS_GPIO & 0x1F);}while(0)
#define	xSPI_ASSERT_CS()   {gpio_set_pin_low(CONF_WINC_SPI_CS_GPIO);}
#define	xSPI_DEASSERT_CS()   {gpio_set_pin_high(CONF_WINC_SPI_CS_GPIO);}

Functions
sint8	nm_bus_deinit (void)
	De-initialize the bus wrapper. More...
sint8	nm_bus_init (void *pvinit)
sint8	nm_bus_ioctl (uint8 u8Cmd, void *pvParameter)
sint8	nm_spi_rw (uint8 *pu8Mosi, uint8 *pu8Miso, uint16 u16Sz)

Variables
tstrNmBusCapabilities	egstrNmBusCapabilities
static Pdc *	g_p_spim_pdc
	Pointer to Pdc data structure. More...
Pio *	p_pio
	PIO instance used by CS. More...

#define NM_BUS_MAX_TRX_SZ   4096

#define SPI_ASSERT_CS

(

)

do {p_pio->PIO_CODR = 1 << (CONF_WINC_SPI_CS_GPIO & 0x1F);}while(0)

Referenced by nm_spi_rw().

#define SPI_DEASSERT_CS

(

)

do {p_pio->PIO_SODR = 1 << (CONF_WINC_SPI_CS_GPIO & 0x1F);}while(0)

Referenced by nm_bus_init(), and nm_spi_rw().

#define xSPI_ASSERT_CS

(

)

{gpio_set_pin_low(CONF_WINC_SPI_CS_GPIO);}

#define xSPI_DEASSERT_CS

(

)

{gpio_set_pin_high(CONF_WINC_SPI_CS_GPIO);}

nm_bus_deinit

(

void

)

De-initialize the bus wrapper.

Returns

ZERO in case of success and M2M_ERR_BUS_FAIL in case of failure

References M2M_SUCCESS.

Referenced by nm_bus_iface_deinit().

sint8 nm_bus_init

(

void *

pvinit

)

References CONF_WINC_SPI, CONF_WINC_SPI_CLK_FLAGS, CONF_WINC_SPI_CLK_GPIO, CONF_WINC_SPI_CLOCK, CONF_WINC_SPI_CS_FLAGS, CONF_WINC_SPI_CS_GPIO, CONF_WINC_SPI_DLYBCT, CONF_WINC_SPI_DLYBS, CONF_WINC_SPI_MISO_FLAGS, CONF_WINC_SPI_MISO_GPIO, CONF_WINC_SPI_MOSI_FLAGS, CONF_WINC_SPI_MOSI_GPIO, CONF_WINC_SPI_NPCS, CONF_WINC_SPI_PHA, CONF_WINC_SPI_POL, g_p_spim_pdc, gpio_configure_pin, M2M_SUCCESS, nm_bsp_reset(), nm_bsp_sleep(), pdc_disable_transfer(), SPI_DEASSERT_CS, spi_disable(), spi_disable_mode_fault_detect(), spi_enable(), spi_enable_clock(), spi_get_pdc_base(), spi_reset(), spi_set_baudrate_div(), spi_set_bits_per_transfer(), spi_set_clock_phase(), spi_set_clock_polarity(), spi_set_fixed_peripheral_select(), spi_set_master_mode(), spi_set_peripheral_chip_select_value(), spi_set_transfer_delay(), and sysclk_get_cpu_hz().

Referenced by nm_bus_iface_init().

sint8 nm_bus_ioctl	(	uint8	u8Cmd,
		void *	pvParameter
	)

References M2M_ERR, NM_BUS_IOCTL_R, NM_BUS_IOCTL_RW, NM_BUS_IOCTL_W, NM_BUS_IOCTL_W_SPECIAL, nm_spi_rw(), tstrNmI2cDefault::pu8Buf, tstrNmI2cSpecial::pu8Buf1, tstrNmI2cSpecial::pu8Buf2, tstrNmSpiRw::pu8InBuf, tstrNmSpiRw::pu8OutBuf, tstrNmI2cDefault::u16Sz, tstrNmSpiRw::u16Sz, tstrNmI2cSpecial::u16Sz1, and tstrNmI2cSpecial::u16Sz2.

sint8 nm_spi_rw	(	uint8 *	pu8Mosi,
		uint8 *	pu8Miso,
		uint16	u16Sz
	)

References CONF_WINC_SPI, CONF_WINC_SPI_CS_GPIO, g_p_spim_pdc, M2M_ERR_BUS_FAIL, M2M_SUCCESS, NULL, p_pio, pdc_rx_init(), pdc_tx_init(), PIO_DELTA, SPI_ASSERT_CS, SPI_DEASSERT_CS, spi_read(), spi_write(), pdc_packet::ul_addr, and pdc_packet::ul_size.

Referenced by nm_bus_ioctl(), nmi_spi_read(), nmi_spi_write(), and nmi_spi_writeread().

tstrNmBusCapabilities egstrNmBusCapabilities

Initial value:

=
{
    NM_BUS_MAX_TRX_SZ
}

Referenced by nm_read_block(), and nm_write_block().

Pdc* g_p_spim_pdc

static

Pointer to Pdc data structure.

Referenced by nm_bus_init(), and nm_spi_rw().

Pio* p_pio

PIO instance used by CS.

Referenced by nm_spi_rw(), pio_configure_pin(), pio_disable_pin_interrupt(), pio_enable_pin_interrupt(), pio_get_pin_group(), pio_get_pin_value(), pio_set_pin_high(), pio_set_pin_low(), and pio_toggle_pin().