Diff: main.cpp

Revision:

0:f44331af9d8b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Nov 25 07:34:40 2015 +0000
@@ -0,0 +1,111 @@
+#include "mbed.h"
+SPI spi(p5, p6, p7); // mosi, miso, sclk
+DigitalOut ak4117cs(p8);
+DigitalOut ak4117pdn(p9);
+DigitalOut ak4396cs(p10);
+DigitalOut ak4396pdn(p11);
+DigitalOut myled(LED1);
+
+uint16_t CONTROL0_CLOCK_SOURCE =       0b0010000000001111;   // select PLL as master clock source
+uint16_t CONTROL1_CLOCK_FREQ =        0b0010000100000000;   // select master clk for PLL mode, fs = 48kHz
+uint16_t CONTROL2_FORMAT_SETTING =     0b0010001000001101;   // select I2S as comm format and channel 1 for fs
+uint16_t CONTROL3_INT_0 =              0b0010001101111111;   // enable all the interrupts on INT0
+
+
+uint16_t CONTROL2_DEFAULT_NORMALSPEED = 0b0010000110000010;
+uint16_t CONTROL1_MODE3_RSTN_AUTO_SETTING = 0b0010000010001110;
+uint16_t CONTROL1_MODE3_AUTO_SETTING = 0b0010000010001111;
+uint16_t CONTROL3_DEFAULT = 0b0010001000000000;
+uint16_t LCH_FULL_VOLUME = 0b0010001111111111;
+uint16_t RCH_FULL_VOLUME = 0b0010010011111111;
+
+//data order is C1,C0,R/W,A4,A3,A2,A1,A0,D7,D6.D5,D4,D3,D2,D1,D0
+uint16_t CONTROL0_AK4396 = 0b0010000010000111;
+uint16_t CONTROL1_AK4396 = 0b0010000110000010;
+
+
+void ak4117_config();
+void ak4396_config();
+
+int main()
+{
+    // Setup the spi for 16 bit data, high steady state clock,
+    // second edge capture, with a 9600 clock rate
+    spi.format(16,3);
+    spi.frequency(9600);
+    ak4396cs = 1;
+    ak4117cs=1;
+
+    ak4117_config();
+    wait(0.2);
+    ak4396_config();
+    while(1) {
+        myled = 1;
+        wait(0.2);
+        myled = 0;
+        wait(0.2);
+    }
+}
+
+void ak4396_config()
+{
+    // Chip must be deselected
+    ak4396cs = 1;
+    ak4396pdn=0; //power down
+    wait_ms(1);
+    ak4396pdn=1;
+    wait_ms(1);
+
+    
+    //while (1)
+    // {
+    // Select the device by seting chip select low
+    ak4396cs = 0;
+    // turn on zero_detect
+    spi.write(CONTROL0_AK4396);
+    // Deselect the device
+    ak4396cs = 1;
+    wait_ms(1);
+
+    ak4396cs=0;
+    spi.write(CONTROL1_AK4396);
+    ak4396cs=1;
+    wait_ms(1);
+    return;
+}
+
+void ak4117_config()
+{
+    // Chip must be deselected
+    ak4117cs = 1;
+    ak4117pdn=0; //power down
+    wait_ms(1);
+    ak4117pdn=1;
+    wait_ms(1);
+
+    //while (1)
+    // {
+    // Select the device by seting chip select low
+    ak4117cs = 0;
+    // turn on zero_detect
+    spi.write(CONTROL0_CLOCK_SOURCE);
+    // Deselect the device
+    ak4117cs = 1;
+    wait_ms(1);
+
+    ak4117cs=0;
+    spi.write(CONTROL1_CLOCK_FREQ);
+    ak4117cs=1;
+    wait_ms(1);
+
+    ak4117cs=0;
+    spi.write(CONTROL2_FORMAT_SETTING);
+    ak4117cs=1;
+    wait_ms(1);
+
+    ak4117cs=0;
+    spi.write(CONTROL3_INT_0);
+    ak4117cs=1;
+    wait_ms(1);
+    return;
+}
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