Diff: mbed_spi.c

Revision:

0:972f3778c19c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed_spi.c	Thu Dec 10 07:39:48 2015 +0000
@@ -0,0 +1,62 @@
+
+#include <stdio.h>
+#include "spi_api.h"
+#include "gpio_api.h"
+#include "nrf_delay.h"
+#include "nrf51.h"
+
+static spi_t mbed_i2c_object = {0,};
+static gpio_t mbed_spi_cs;
+
+void mbed_spi_init(PinName mosi, PinName miso, PinName sclk, PinName cs)
+{
+    spi_init(&mbed_i2c_object, mosi, miso, sclk, NC);
+    spi_format(&mbed_i2c_object, 8, 0, 0);
+    spi_frequency(&mbed_i2c_object, 1000000);
+
+    gpio_init_out(&mbed_spi_cs, cs);
+    gpio_write(&mbed_spi_cs, 1);
+}
+
+int mbed_spi_write(unsigned char reg_addr,
+                   unsigned char length,
+                   unsigned char const *data)
+{
+    int i;
+
+    gpio_write(&mbed_spi_cs, 0);
+    spi_master_write(&mbed_i2c_object, reg_addr);
+    for (i = 0; i < length; i++) {
+        spi_master_write(&mbed_i2c_object, data[i]);
+    }
+    gpio_write(&mbed_spi_cs, 1);
+    nrf_delay_us(50);
+    return 0;
+}
+
+int mbed_spi_read(unsigned char reg_addr,
+                  unsigned char length,
+                  unsigned char *data)
+{
+    int i;
+
+    gpio_write(&mbed_spi_cs, 0);
+    spi_master_write(&mbed_i2c_object, reg_addr | 0x80);
+    for (i = 0; i < length; i++) {
+        data[i] = spi_master_write(&mbed_i2c_object, 0xff);
+    }
+
+    gpio_write(&mbed_spi_cs, 1);
+    nrf_delay_us(50);
+    return 0;
+}
+
+void mbed_spi_enable(void)
+{
+
+}
+
+void mbed_spi_disable(void)
+{
+
+}