Diff: NRFuart.cpp

Revision:

36:8e359069192b

Child:

37:505ef618f06c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/NRFuart.cpp	Tue Jan 15 11:19:41 2019 +0000
@@ -0,0 +1,118 @@
+//bool NRFuart_enabled = false;
+#include "NRFuart.h"
+
+void NRFuart_init_nohwfc() {
+    if(NRF_UART0->ENABLE == UART_ENABLE_ENABLE_Disabled) {
+        //Configure UART0 pins.
+        nrf_gpio_cfg_output(PN_UART_TX);
+        nrf_gpio_cfg_input(PN_UART_RX, NRF_GPIO_PIN_NOPULL);
+        NRF_UART0->PSELTXD = PN_UART_TX;
+        NRF_UART0->PSELRXD = PN_UART_RX;
+        NRF_UART0->CONFIG = (UART_CONFIG_PARITY_Excluded << UART_CONFIG_PARITY_Pos) | UART_CONFIG_HWFC_Disabled;
+        NRF_UART0->BAUDRATE = NRF_UART_BAUDRATE_115200;
+        NRF_UART0->ENABLE = UART_ENABLE_ENABLE_Enabled;
+        NRF_UART0->EVENTS_RXDRDY = 0;
+        NRF_UART0->EVENTS_TXDRDY = 0;
+        NRF_UART0->EVENTS_ERROR  = 0;
+        NRF_UART0->EVENTS_TXDRDY = 0;
+        NRF_UART0->TASKS_STARTRX = 1;
+        NRF_UART0->TASKS_STARTTX = 1;
+        //NRF_UART0->INTENCLR = 0xffffffffUL;
+        //NRF_UART0->INTENSET = UART_INTENSET_RXDRDY_Msk; //or
+        /*NRF_UART0->INTENSET = (UART_INTENSET_RXDRDY_Set << UART_INTENSET_RXDRDY_Pos) |
+                              (UART_INTENSET_TXDRDY_Set << UART_INTENSET_TXDRDY_Pos) |
+                              (UART_INTENSET_ERROR_Set << UART_INTENSET_ERROR_Pos);*/    
+        //NVIC_ClearPendingIRQ(UART0_IRQn);
+        //NVIC_SetPriority(UART0_IRQn, 1); //3
+        //NVIC_EnableIRQ(UART0_IRQn);
+        //NVIC_SetVector(UART0_IRQn, (uint32_t) UART0_IRQHandler);
+    }
+    //NRFuart_enabled = true;
+};
+void NRFuart_uninit() {
+    if (NRF_UART0->ENABLE == UART_ENABLE_ENABLE_Enabled) {
+        NVIC_DisableIRQ(UART0_IRQn);
+        NRF_UART0->INTENCLR = 0xffffffffUL;
+        NRF_UART0->TASKS_STOPRX = 1;
+        NRF_UART0->TASKS_STOPTX = 1;
+        NRF_UART0->ENABLE = UART_ENABLE_ENABLE_Disabled;
+        NRF_UART0->PSELTXD = 0xFFFFFFFF;
+        NRF_UART0->PSELRXD = 0xFFFFFFFF;
+        NRF_UART0->PSELRTS = 0xFFFFFFFF;
+        NRF_UART0->PSELCTS = 0xFFFFFFFF;
+        //NRFuart_enabled = false;
+    }
+};
+void NRFuart_putc(char byte) {
+    if (!NRF_UART0->ENABLE) NRFuart_init_nohwfc();
+    NRF_UART0->TXD = byte;
+    uint32_t safetycounter = 0;
+    while(NRF_UART0->EVENTS_TXDRDY != 1 && safetycounter < 10000) {
+        safetycounter ++; // Wait for the current TXD data to be sent.
+    }
+    NRF_UART0->EVENTS_TXDRDY = 0;
+};
+void NRFuart_puts(char* bytes) {
+    if (!NRF_UART0->ENABLE) NRFuart_init_nohwfc();
+    for(int i = 0; bytes[i] != '\0'; i++) {
+        NRFuart_putc(bytes[i]);
+    }
+};
+void NRFuart_puts_debug(char* bytes) {
+    if (!NRF_UART0->ENABLE) NRFuart_init_nohwfc();
+    for(int i = 0; bytes[i] != '\0'; i++) {
+        NRFuart_putc(bytes[i]);
+    }
+    NRFuart_putc('\n');
+};
+void debug_prep(){
+    memset(GLOBAL_debug_buffer, '\0', sizeof(GLOBAL_debug_buffer));   
+}
+void debug_exe(){
+    NRFuart_puts_debug(GLOBAL_debug_buffer);
+}
+char NRFuart_getc() {
+    if (!NRF_UART0->ENABLE) NRFuart_init_nohwfc();
+    uint32_t safetycounter = 0;
+    while(NRF_UART0->EVENTS_RXDRDY != 1 && safetycounter < 10000){
+        safetycounter ++;
+    }
+    NRF_UART0->EVENTS_RXDRDY = 0;
+    return (uint8_t)NRF_UART0->RXD;
+};
+char* NRFuart_gets(char terminator) {
+    if (!NRF_UART0->ENABLE) NRFuart_init_nohwfc();
+    static char buffer[200];
+    int charindex = 0;
+    memset(buffer,0x00,sizeof(buffer));
+    while(1) {
+        if (NRF_UART0->EVENTS_RXDRDY == 0) {
+            //Nothing available from the UART.
+            continue;
+        } else {
+            char inbyte = NRFuart_getc();
+            if (inbyte == terminator) {
+                break;
+            } else {
+                buffer[charindex] = inbyte;
+                charindex++;
+            }
+        }
+    }
+    buffer[charindex] = '\n'; //make sure we end with whitespace lf
+    return buffer;
+};
+void NRFuart_flush() {
+    if (!NRF_UART0->ENABLE) NRFuart_init_nohwfc();
+    //THIS HASNT BEEN TESTED
+    char char1 = 0;
+    uint32_t safetycounter = 0;
+    while (NRFuart_readable() && safetycounter < 10000) {
+        safetycounter ++;
+        char1 = NRFuart_getc();
+    }
+};
+bool NRFuart_readable() {
+    if (!NRF_UART0->ENABLE) NRFuart_init_nohwfc();
+    return (NRF_UART0->EVENTS_RXDRDY == 1);
+};
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