Wim Huiskamp
Test for SC16IS750 and SC16IS752 I2C or SPI to UART bridge.
Diff: main.cpp
- Revision:
- 0:20d8ef79d787
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Dec 24 01:09:26 2014 +0000
@@ -0,0 +1,320 @@
+#include "mbed.h"
+#include "SC16IS750.h"
+
+
+#if defined(TARGET_LPC1768)
+// SPI for LPC1768
+#define D_MOSI p5
+#define D_MISO p6
+#define D_SCLK p7
+#define D_CS p8
+#define D_INTR p15
+#define D_RST p16
+
+// I2C for KL25Z
+#define D_SCL p10
+#define D_SDA p9
+
+// Serial for LPC1768
+#define D_TX USBTX
+#define D_RX USBRX
+//#define D_RST p25
+//#define D_STS p26
+
+DigitalOut myled1(LED1);
+//DigitalOut myled2(LED2);
+//DigitalOut myled3(LED3);
+DigitalOut heartbeatLED(LED4);
+#endif
+
+#if defined(TARGET_KL25Z)
+// SPI for KL25Z
+#define D_MOSI PTD2
+#define D_MISO PTD3
+#define D_SCLK PTD1
+#define D_CS PTD0
+//#define D_INTR PTA13
+#define D_RST PTD5
+
+// I2C for KL25Z
+#define D_SCL PTE1
+#define D_SDA PTE0
+
+// Serial for KL25Z
+#define D_TX USBTX
+#define D_RX USBRX
+
+DigitalOut myled1(LED_RED);
+//DigitalOut myled2(LED_GREEN);
+//DigitalOut myled3(LED_BLUE); // Same as PTD1 (SCK)
+DigitalOut heartbeatLED(LED_GREEN);
+#endif
+
+#if defined(TARGET_LPC812)
+// SPI for LPC812
+#define D_MOSI P0_14
+#define D_MISO P0_15
+#define D_SCLK P0_12
+#define D_CS P0_13
+//#define D_INTR P0_7
+//#define D_RST P0_8
+
+// Serial for LPC812
+#define D_TX P0_4
+#define D_RX P0_0
+//#define D_RST P0_9
+//#define D_STS P0_17
+#endif
+
+
+//SPI Version
+SPI spi(D_MOSI, D_MISO, D_SCLK); //MOSI, MISO, SCK
+//SC16IS750_SPI serial_bridge(&spi, D_CS);
+//SC16IS750_SPI serial_bridge(&spi, D_CS, D_RST); // version with Hardware Reset pin
+//SC16IS752_SPI serial_bridge(&spi, D_CS, D_RST, SC16IS750::Channel_A); // Dual UART version with Hardware Reset pin
+//SC16IS752_SPI serial_bridge(&spi, D_CS, D_RST, SC16IS750::Channel_B); // Dual UART version with Hardware Reset pin
+
+//I2C Version
+I2C i2c(D_SDA, D_SCL); //SDA, SCL
+//SC16IS750_I2C serial_bridge(&i2c, SC16IS750_DEFAULT_ADDR);
+//SC16IS750_I2C serial_bridge(&i2c, SC16IS750_DEFAULT_ADDR, D_RST);
+SC16IS752_I2C serial_bridge(&i2c, SC16IS750_DEFAULT_ADDR, D_RST, SC16IS750::Channel_A); // Dual UART version with Hardware Reset pin
+//SC16IS752_I2C serial_bridge(&i2c, SC16IS750_DEFAULT_ADDR, D_RST, SC16IS750::Channel_B); // Dual UART version with Hardware Reset pin
+
+
+Serial pc(D_TX,D_RX);
+
+void show_menu() {
+ pc.printf("0: Exit\n\r");
+ pc.printf("1: Show Menu\n\r");
+ pc.printf("2: Init\n\r");
+ pc.printf("3: IO Port Out\n\r");
+ pc.printf("4: Transparant mode\n\r");
+ pc.printf("5: Free bufferspace\n\r");
+ pc.printf("6: Enable RTS/CTS\n\r");
+ pc.printf("7: Disable RTS/CTS\n\r");
+ pc.printf("8: Write block\n\r");
+ pc.printf("9: Baudrate 9600\n\r");
+ pc.printf("A: Baudrate 115200\n\r");
+ pc.printf("B: Transparant mode with bufferdisplay\n\r");
+ pc.printf("C: Test printf \n\r");
+ pc.printf("D: Test connected\n\r");
+
+ #if(0)
+ pc.printf("D: \n\r");
+ pc.printf("P: \n\r");
+#endif
+ pc.printf("\n\r");
+}
+
+// Variables for Heartbeat and Status monitoring
+Ticker heartbeat;
+bool heartbeatflag=false;
+
+// Local functions
+void clear_screen() {
+//ANSI Terminal Commands
+ pc.printf("\x1B[2J");
+ pc.printf("\x1B[H");
+}
+
+
+// Heartbeat monitor
+void pulse() {
+ heartbeatLED = !heartbeatLED;
+}
+
+void heartbeat_start() {
+ heartbeat.attach(&pulse, 0.5);
+}
+
+void heartbeat_stop() {
+ heartbeat.detach();
+}
+
+
+int main() {
+ bool running=true;
+ bool running_test=true;
+ char command, ch;
+ int i=0;
+
+#if defined(TARGET_LPC1768)
+ pc.printf("\r\nHello World from LPC1768\r\n");
+#endif
+#if defined(TARGET_KL25Z)
+ pc.printf("\r\nHello World from KL25Z\r\n");
+#endif
+#if defined(TARGET_LPC812)
+ pc.printf("\r\nHello World from LPC812\r\n");
+#endif
+
+
+ heartbeat_start();
+
+ myled1 = 1; // LED Off
+
+ // We need to enable flow control or we overflow buffers and
+ // lose data when used with the WiFly. Note that flow control
+ // needs to be enabled on the WiFly for this to work but it's
+ // possible to do that with flow control enabled here but not there.
+// serial_bridge.set_flow_control(SC16IS750::RTSCTS);
+
+ serial_bridge.ioSetDirection(0xFF); // All outputs
+ serial_bridge.ioSetState(0xFF); // All On
+
+ show_menu();
+
+ while(running) {
+
+ if(pc.readable()) {
+ command = pc.getc();
+ pc.printf("command= %c \n\r", command);
+
+ switch (command) {
+ case '0' :
+ pc.printf("Done\n\r");
+ running = false;
+ break;
+
+ case '1' :
+ show_menu();
+ break;
+
+ case '2' :
+ pc.printf("Hardware Reset\n\r");
+ serial_bridge.hwReset(); //test
+
+ pc.printf("Init\n\r");
+ serial_bridge._init();
+ pc.printf("Hardware Init done\n\r");
+ break;
+
+ case '3' :
+ pc.printf("IO Port Out\n\r");
+
+ i=0;
+ while (!pc.readable()) {
+ serial_bridge.ioSetState(~i);
+// serial_bridge.ioGetState() ; //test
+ wait(0.5);
+ pc.putc('*');
+ i=(i+1) & 0xFF;
+ }
+
+ pc.getc();
+ pc.printf("IO Port Out Done\n\r");
+ break;
+
+ case '4' :
+ pc.printf("Transparant Mode, Enter '#' to quit...\n\r");
+
+ running_test=true;
+
+ while (running_test) {
+ // From SPI/I2C to serial
+ while (running_test && pc.readable()) {
+ ch = pc.getc();
+ running_test = (ch != '#');
+ serial_bridge.putc(ch);
+ }
+
+ // From Serial to SPI/I2C
+ while (running_test && serial_bridge.readable()) {
+ ch = serial_bridge.getc();
+ running_test = (ch != '#');
+ pc.putc(ch);
+ }
+
+ }
+
+ pc.printf("\n\rTransparant Mode done\n\r");
+ break;
+
+ case '5' :
+ pc.printf("Available for Reading = %3d (Free Space = %3d)\n\r", serial_bridge.readableCount(), SC16IS750_FIFO_RX - serial_bridge.readableCount());
+ pc.printf("Available for Writing = %3d (Used Space = %3d)\n\r", serial_bridge.writableCount(), SC16IS750_FIFO_TX - serial_bridge.writableCount());
+ break;
+
+ case '6' :
+ pc.printf("Enable RTS/CTS\n\r");
+ serial_bridge.set_flow_control(SC16IS750::RTSCTS);
+ break;
+ case '7' :
+ pc.printf("Disable RTS/CTS\n\r");
+ serial_bridge.set_flow_control(SC16IS750::Disabled);
+ break;
+
+ case '8' :
+ pc.printf("Write block\n\r");
+ serial_bridge.writeString("Hello World from mbed and SC16IS750 ");
+ break;
+
+ case '9' :
+ pc.printf("Baudrate = 9600, Divisor = %d\n\r", SC16IS750_BAUDRATE_DIVISOR(9600));
+ serial_bridge.baud(9600);
+ break;
+
+ case 'A' :
+ pc.printf("Baudrate = 115200, Divisor = %d\n\r", SC16IS750_BAUDRATE_DIVISOR(115200));
+ serial_bridge.baud(115200);
+ break;
+
+ case 'B' :
+ pc.printf("Transparant Mode with buffer display, Enter '#' to quit...\n\r");
+
+ running_test=true;
+
+ while (running_test) {
+ // From SPI/I2C to serial
+ while (running_test && pc.readable()) {
+ ch = pc.getc();
+ running_test = (ch != '#');
+ serial_bridge.putc(ch);
+
+ // Show buffers when character was entered
+ pc.printf("\n\r");
+ pc.printf("Available for Reading = %3d (Free Space = %3d)\n\r", serial_bridge.readableCount(), SC16IS750_FIFO_RX - serial_bridge.readableCount());
+ pc.printf("Available for Writing = %3d (Used Space = %3d)\n\r", serial_bridge.writableCount(), SC16IS750_FIFO_TX - serial_bridge.writableCount());
+ }
+
+
+ // From Serial to SPI/I2C
+ while (running_test && serial_bridge.readable()) {
+ ch = serial_bridge.getc();
+ running_test = (ch != '#');
+ pc.putc(ch);
+ }
+
+ }
+
+ pc.printf("\n\rTransparant Mode done\n\r");
+ break;
+
+ case 'C' :
+ pc.printf("Test printf() \n\r");
+
+ serial_bridge.printf("Available for Reading = %3d (Free Space = %3d)\n\r", serial_bridge.readableCount(), SC16IS750_FIFO_RX - serial_bridge.readableCount() );
+ serial_bridge.printf("Available for Writing = %3d (Used Space = %3d)\n\r", serial_bridge.writableCount(), SC16IS750_FIFO_TX - serial_bridge.writableCount());
+
+ pc.printf("\n\rTest printf() done\n\r");
+ break;
+ case 'D' :
+ pc.printf("Test connected\n\r");
+ if(!serial_bridge.connected()){
+ pc.printf("Failed to detect UART bridge\r\n");
+ }
+ else {
+ pc.printf("Found UART bridge!\r\n");
+ }
+ break;
+ default :
+ break;
+
+ } //switch
+ } //if
+ } //while
+
+ pc.printf("\nBye World!\n");
+}
+
\ No newline at end of file
Repository toolbox
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Repository details
| Type: | Program |
|---|---|
| Mbed OS support: | Mbed 2 deprecated |
| Created: | 24 Dec 2014 |
| Imports: | 121 |
| Forks: | 0 |
| Commits: | 1 |
| Dependents: | 0 |
| Dependencies: | 2 |
| Followers: | 2 |
The code in this repository is Apache licensed.
SC16IS750 and SC16IS752 I2C or SPI to UART bridge