From 3f913efda03fd840cd526ef72e6f397c7da61bd7 Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Tue, 9 Aug 2022 22:23:08 +0200
Subject: code layout

---
 fw/fe310/eos/soc/uart.c | 31 ++++++++++++++++++++-----------
 1 file changed, 20 insertions(+), 11 deletions(-)

(limited to 'fw/fe310/eos/soc/uart.c')

diff --git a/fw/fe310/eos/soc/uart.c b/fw/fe310/eos/soc/uart.c
index 30f76d9..589832a 100644
--- a/fw/fe310/eos/soc/uart.c
+++ b/fw/fe310/eos/soc/uart.c
@@ -9,6 +9,7 @@
 #include "eos.h"
 #include "interrupt.h"
 #include "event.h"
+#include "i2s.h"
 
 #include "uart.h"
 
@@ -44,22 +45,30 @@ int eos_uart_init(uint8_t wakeup_cause) {
     eos_evtq_set_handler(EOS_EVT_UART, uart_handle_evt);
     eos_intr_set(INT_UART0_BASE, IRQ_PRIORITY_UART, uart_handle_intr);
 
-    UART0_REG(UART_REG_TXCTRL)  |=  UART_TXEN;
-    UART0_REG(UART_REG_RXCTRL)  |=  UART_RXEN;
-
     eos_uart_speed(EOS_UART_SPEED);
-    eos_uart_start();
+
+    eos_uart_enable();
 
     return EOS_OK;
 }
 
-void eos_uart_start(void) {
+void eos_uart_enable(void) {
+    UART0_REG(UART_REG_TXCTRL)  |=  UART_TXEN;
+    UART0_REG(UART_REG_RXCTRL)  |=  UART_RXEN;
+
     GPIO_REG(GPIO_IOF_SEL)      &= ~IOF0_UART0_MASK;
     GPIO_REG(GPIO_IOF_EN)       |=  IOF0_UART0_MASK;
 }
 
-void eos_uart_stop(void) {
+void eos_uart_disable(void) {
     GPIO_REG(GPIO_IOF_EN)       &= ~IOF0_UART0_MASK;
+
+    UART0_REG(UART_REG_TXCTRL)  &= ~UART_TXEN;
+    UART0_REG(UART_REG_RXCTRL)  &= ~UART_RXEN;
+}
+
+int eos_uart_enabled(void) {
+    return !!(GPIO_REG(GPIO_IOF_EN) & IOF0_UART0_MASK);
 }
 
 void eos_uart_speed(uint32_t baud_rate) {
@@ -90,8 +99,8 @@ void eos_uart_rxwm_clear(void) {
     UART0_REG(UART_REG_IE)      &= ~UART_IP_RXWM;
 }
 
-int eos_uart_putc(int c, char b) {
-    if (b) {
+int eos_uart_putc(int c, int block) {
+    if (block) {
         while (UART0_REG(UART_REG_TXFIFO) & 0x80000000);
         UART0_REG(UART_REG_TXFIFO) = c & 0xff;
     } else {
@@ -101,14 +110,14 @@ int eos_uart_putc(int c, char b) {
     return EOS_OK;
 }
 
-int eos_uart_getc(char b) {
+int eos_uart_getc(int block) {
     volatile uint32_t r;
 
-    if (b) {
+    if (block) {
         while ((r = UART0_REG(UART_REG_RXFIFO)) & 0x80000000);
     } else {
         r = UART0_REG(UART_REG_RXFIFO);
         if (r & 0x80000000) return EOS_ERR_EMPTY;
     }
     return r & 0xff;
-}
\ No newline at end of file
+}
-- 
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