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#include <stdlib.h>
#include <stdint.h>
#include "encoding.h"
#include "platform.h"
#include "eos.h"
#include "msgq.h"
#include "interrupt.h"
#include "event.h"
#include "board.h"
#include "net.h"
#include "spi.h"
#include "spi_priv.h"
#include "spi_cfg.h"
#include "spi_dev.h"
static uint8_t spi_dev;
static uint8_t spi_lock;
static uint16_t spi_div[EOS_SPI_MAX_DEV];
void eos_spi_dev_init(void) {
int i;
for (i=0; i<EOS_SPI_MAX_DEV; i++) {
spi_div[i] = spi_cfg[i].div;
if (spi_cfg[i].csid == SPI_CSID_NONE) {
GPIO_REG(GPIO_INPUT_EN) &= ~(1 << spi_cfg[i].cspin);
GPIO_REG(GPIO_OUTPUT_EN) |= (1 << spi_cfg[i].cspin);
GPIO_REG(GPIO_PULLUP_EN) &= ~(1 << spi_cfg[i].cspin);
GPIO_REG(GPIO_OUTPUT_XOR) &= ~(1 << spi_cfg[i].cspin);
GPIO_REG(GPIO_OUTPUT_VAL) |= (1 << spi_cfg[i].cspin);
}
}
}
int eos_spi_select(unsigned char dev) {
if (dev == EOS_SPI_DEV_NET) return EOS_ERR;
if (spi_lock) return EOS_ERR_BUSY;
if (spi_dev == EOS_SPI_DEV_NET) {
eos_net_stop();
} else {
eos_spi_stop();
}
spi_dev = dev;
eos_spi_start(spi_div[dev], spi_cfg[dev].csid, spi_cfg[dev].cspin, spi_cfg[dev].evt);
return EOS_OK;
}
int eos_spi_deselect(void) {
if (spi_dev == EOS_SPI_DEV_NET) return EOS_ERR;
if (spi_lock) return EOS_ERR_BUSY;
eos_spi_stop();
spi_dev = EOS_SPI_DEV_NET;
eos_net_start(0);
return EOS_OK;
}
uint8_t eos_spi_dev(void) {
return spi_dev;
}
uint16_t eos_spi_div(unsigned char dev) {
return spi_div[dev];
}
uint8_t eos_spi_csid(unsigned char dev) {
return spi_cfg[dev].csid;
}
uint8_t eos_spi_cspin(unsigned char dev) {
return spi_cfg[dev].cspin;
}
void eos_spi_lock(void) {
spi_lock = 1;
}
void eos_spi_unlock(void) {
spi_lock = 0;
}
void eos_spi_set_div(unsigned char dev, uint16_t div) {
spi_div[dev] = div;
}
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