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Bluetooth: SPI: switch to a single SPI transfer when receiving

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Change-Id: I27b504032080bddf7ebc88ef4812a0e7eab691c6
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
This commit is contained in:
Ricardo Salveti 2017-01-25 23:19:44 -02:00 • committed by Johan Hedberg
commit f27d8eef39
1 changed files with 5 additions and 5 deletions
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10
drivers/bluetooth/hci/spi.c
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@ -58,6 +58,7 @@
#define SPI_MAX_MSG_LEN 255 /* As defined by X-NUCLEO-IDB04A1 BSP */ #define SPI_MAX_MSG_LEN 255 /* As defined by X-NUCLEO-IDB04A1 BSP */
static uint8_t rxmsg[SPI_MAX_MSG_LEN]; static uint8_t rxmsg[SPI_MAX_MSG_LEN];
static uint8_t txmsg[SPI_MAX_MSG_LEN];
static struct device *spi_dev; static struct device *spi_dev;
#if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) #if defined(CONFIG_BLUETOOTH_SPI_BLUENRG)
@ -134,8 +135,10 @@ static void bt_spi_rx_thread(void)
struct net_buf *buf; struct net_buf *buf;
uint8_t header_master[5] = { SPI_READ, 0x00, 0x00, 0x00, 0x00 }; uint8_t header_master[5] = { SPI_READ, 0x00, 0x00, 0x00, 0x00 };
uint8_t header_slave[5]; uint8_t header_slave[5];
uint8_t dummy = 0xFF, size, i;
struct bt_hci_acl_hdr acl_hdr; struct bt_hci_acl_hdr acl_hdr;
uint8_t size;
memset(&txmsg, 0xFF, SPI_MAX_MSG_LEN);
while (true) { while (true) {
k_sem_take(&sem_request, K_FOREVER); k_sem_take(&sem_request, K_FOREVER);
@ -152,10 +155,7 @@ static void bt_spi_rx_thread(void)
header_slave[STATUS_HEADER_TOREAD] == 0xFF); header_slave[STATUS_HEADER_TOREAD] == 0xFF);
size = header_slave[STATUS_HEADER_TOREAD]; size = header_slave[STATUS_HEADER_TOREAD];
spi_transceive(spi_dev, &txmsg, size, &rxmsg, size);
for (i = 0; i < size; i++) {
spi_transceive(spi_dev, &dummy, 1, &rxmsg[i], 1);
}
#if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) #if defined(CONFIG_BLUETOOTH_SPI_BLUENRG)
gpio_pin_write(cs_dev, GPIO_CS_PIN, 1); gpio_pin_write(cs_dev, GPIO_CS_PIN, 1);