1 files changed, 61 insertions, 0 deletions
diff --git a/polycom_xmit/uart.c b/polycom_xmit/uart.c
new file mode 100644
index 0000000..5d7b5d3
--- /dev/null
+++ b/polycom_xmit/uart.c
@@ -0,0 +1,61 @@
+#include "project.h"
+
+
+
+LOCAL void ICACHE_FLASH_ATTR
+uart0_config (uint32_t baud)
+{
+
+
+//        ETS_UART_INTR_ATTACH(uart0_rx_intr_handler,  &(UartDev.rcv_buff));
+
+  PIN_PULLUP_DIS (PERIPHS_IO_MUX_U0TXD_U);
+  PIN_FUNC_SELECT (PERIPHS_IO_MUX_U0TXD_U, FUNC_U0TXD);
+
+
+
+  uart_div_modify (UART0, UART_CLK_FREQ / baud);
+
+  SET_PERI_REG_MASK (UART_CONF0 (UART0), UART_RXFIFO_RST | UART_TXFIFO_RST); //RESET FIFO
+  CLEAR_PERI_REG_MASK (UART_CONF0 (UART0), UART_RXFIFO_RST | UART_TXFIFO_RST);
+
+  WRITE_PERI_REG (UART_CONF1 (UART0),
+                  ((100 & UART_RXFIFO_FULL_THRHD) << UART_RXFIFO_FULL_THRHD_S)
+                  | (0x02 & UART_RX_TOUT_THRHD) << UART_RX_TOUT_THRHD_S |
+                  UART_RX_TOUT_EN | ((0x10 & UART_TXFIFO_EMPTY_THRHD) <<
+                                     UART_TXFIFO_EMPTY_THRHD_S));
+  SET_PERI_REG_MASK (UART_INT_ENA (UART0),
+                     UART_RXFIFO_TOUT_INT_ENA | UART_FRM_ERR_INT_ENA);
+
+
+
+  WRITE_PERI_REG (UART_INT_CLR (UART0), 0xffff);
+  //enable rx_interrupt
+  //SET_PERI_REG_MASK(UART_INT_ENA(UART0), UART_RXFIFO_FULL_INT_ENA|UART_RXFIFO_OVF_INT_ENA);
+}
+
+
+
+STATUS
+uart0_tx_one_char (uint8 TxChar)
+{
+  while (true)
+    {
+      uint32 fifo_cnt =
+        READ_PERI_REG (UART_STATUS (UART0)) & (UART_TXFIFO_CNT <<
+                                               UART_TXFIFO_CNT_S);
+      if ((fifo_cnt >> UART_TXFIFO_CNT_S & UART_TXFIFO_CNT) < 126)
+        {
+          break;
+        }
+    }
+  WRITE_PERI_REG (UART_FIFO (UART0), TxChar);
+  return OK;
+}
+
+
+void ICACHE_FLASH_ATTR
+uart_init (void)
+{
+  uart0_config (115200);
+}