C++ (Cpp) spi_queue_xfer_sg Examples

Example #1

File: spiflash.c Project: biznixcn/mchck

static void
spiflash_run_transaction(struct spiflash_transaction *trans)
{
        spi_queue_xfer_sg(&trans->dev->flash_spi_ctx.ctx, trans->dev->cs,
                          trans->flash_tx_sg, trans->flash_rx_sg,
                          spiflash_transaction_dispatched_spi_cb, trans);
}

Example #2

File: nrf.c Project: tralamazza/mchck

static void
send_command(struct nrf_transaction_t *trans, spi_cb *cb, void *data)
{
	struct sg *tx = trans->tx_len ?
		sg_init(trans->tx_sg, &trans->cmd, 1, trans->tx_data, trans->tx_len) :
		sg_init(trans->tx_sg, &trans->cmd, 1);
	struct sg *rx = trans->rx_len ?
		sg_init(trans->rx_sg, &trans->status, 1, trans->rx_data, trans->rx_len) :
		sg_init(trans->rx_sg, &trans->status, 1);

	spi_queue_xfer_sg(&trans->spi_ctx, NRF_SPI_CS, tx, rx, cb, data);
}

Example #3

File: ez-port-flash.c Project: deanrock/mchck

static size_t
program_sector(size_t addr)
{
        static struct spi_ctx_bare sp_ctx;
        static struct sg tx_sg[2];
        static uint8_t header[4];
        size_t len = FLASH_SECTOR_SIZE;

        write_enable();
        header[0] = EZPORT_SP;
        header[1] = addr >> 16;
        header[2] = addr >> 8;
        header[3] = addr;
        sg_init(tx_sg,
                (void *)header, 4,
                _binary_payload_bin_start + addr, len);
        spi_queue_xfer_sg(&sp_ctx, EZPORT_SPI_CS,
                          tx_sg, NULL,
                          NULL, NULL);
        check_status();

        return (addr + len);
}