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ch552: Add USB HID and protocol support over UART
- Add USB HID support. - Introduce a small protocol to distinguish between CDC and HID data sent over the UART. - Add some debug printing. - Cleanup of code and formatting.
This commit is contained in:
Jonas Thörnblad
Michael Cardell Widerkrantz
parent
90fca5d3dd
commit
b443359e9c
12 changed files with 2047 additions and 1138 deletions
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@ -1,133 +1,201 @@
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#ifndef __DEBUG_H__
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#define __DEBUG_H__
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/* Debug */
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/* Provide printf subroutine and delay function */
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#pragma once
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#include <stdint.h>
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#ifndef UART0_BAUD
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#define UART0_BAUD 9600
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#include "ch554.h"
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// UART1 baud rates
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// Setting Actual % error
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//Std 9600 9615.38 0.16%
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// 14400 14492.75 0.64%
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//Std 19200 19230.77 0.16%
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//Std 38400 38461.54 0.16%
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//Std 57600 58823.53 2.12%
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// 100000 100000 0.00%
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//Std 115200 111111.1 -3.55%
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// 128000 142857.14 11.61%
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//Std 230400 250000 8.51%
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// 250000 250000 0%
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// 256000 333333.33 30.21%
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//Std 460800 500000 8.51%
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//Std 500000 500000 0%
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//Std 576000
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//Std 921600
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//Std 1000000 1000000 0.00%
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#ifndef UART0_BAUD
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//#define UART0_BAUD 115200
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#define UART0_BAUD 1000000
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#endif
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#ifndef UART1_BAUD
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#define UART1_BAUD 9600
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#define UART1_BAUD 500000
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//#define UART1_BAUD 1000000
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#endif
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void CfgFsys( ); // CH554 clock selection and configuration
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void mDelayuS (uint16_t n); // Delay in units of uS
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void mDelaymS (uint16_t n); // Delay in mS
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void CfgFsys(); // CH554 clock selection and configuration
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void mDelayuS(uint16_t n); // Delay in units of uS
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void mDelaymS(uint16_t n); // Delay in mS
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/*******************************************************************************
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* Function Name : CH554UART0Alter()
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* Description : CH554 serial port 0 pin mapping, serial port mapping to P0.2 and P0.3
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*******************************************************************************/
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* Function Name : CH554UART0Alter()
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* Description : Set the alternate pin mappings for UART0 (RX on P1.2, TX on P1.3)
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*******************************************************************************/
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inline void CH554UART0Alter()
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{
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PIN_FUNC |= bUART0_PIN_X; //串口映射到P1.2和P1.3
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PIN_FUNC |= bUART0_PIN_X; // RX on P1.2, TX on P1.3
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}
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/*******************************************************************************
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* Function Name : mInitSTDIO()
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* Description : CH554 serial port 0 is initialized, T1 is used as the baud rate generator of UART0 by default, T2 can also be used
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As a baud rate generator
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*******************************************************************************/
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inline void mInitSTDIO( )
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* Function Name : mInitSTDIO()
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* Description : CH554 UART0 is initialized
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* T1 is used as the baud rate generator of UART0 by default
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* T2 can also be used as baud rate generator
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* RX on P3.0, TX on P3.1
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*******************************************************************************/
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inline void mInitSTDIO( )
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{
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uint32_t x;
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uint8_t x2;
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SM0 = 0;
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SM1 = 1;
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SM2 = 0; //Serial port 0 usage mode 1
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//Use Timer1 as a baud rate generator
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RCLK = 0; //UART0 receive clock
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TCLK = 0; //UART0 transmit clock
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PCON |= SMOD;
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x = 10 * FREQ_SYS / UART0_BAUD / 16; //If you change the main frequency, be careful not to overflow the value of x
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SM0 = 0; // 8-bit data asynchronous communication
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SM1 = 1; // Variable baud rate, which is generated by timer T1 or T2
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// With SM0=0 and SM1=1 we are now in UART0 Mode 1
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SM2 = 0; // In Mode 1, SM2=0 gives that the Receive interrupt flag bit is set when receiving data and the reception is valid
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// Use Timer1 as a baud rate generator
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RCLK = 0; // UART0 receive clock
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TCLK = 0; // UART0 transmit clock
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PCON |= SMOD; // Set Fast mode for UART0 baud rate communication
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x = 10 * FREQ_SYS / UART0_BAUD / 16; // If you change the main frequency, be careful not to overflow the value of x
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x2 = x % 10;
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x /= 10;
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if ( x2 >= 5 ) x ++; //rounding
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TMOD = TMOD & ~ bT1_GATE & ~ bT1_CT & ~ MASK_T1_MOD | bT1_M1; //0X20, Timer1 as 8-bit auto-reload timer
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T2MOD = T2MOD | bTMR_CLK | bT1_CLK; //Timer1 clock selection
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TH1 = 0-x; //12MHz crystal oscillator, buad / 12 is the actual need to set the baud rate
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TR1 = 1; //Start timer 1
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TI = 1;
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REN = 1; //Serial 0 receive enable
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if (x2 >= 5) {
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x++; // Rounding
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}
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TMOD = (TMOD & ~bT1_GATE & ~bT1_CT & ~MASK_T1_MOD) | bT1_M1; // Timer1 as 8-bit auto-reload timer
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T2MOD = T2MOD | bTMR_CLK | bT1_CLK; // Timer1 clock selection
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TH1 = 0-x; // 12MHz crystal oscillator, buad / 12 is the actual need to set the baud rate
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TR1 = 1; // Start timer 1
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TI = 1; // Enable transmit interrupt
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REN = 1; // UART0 receive enable
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ES = 1; // UART0 interrupt enable
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}
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/*******************************************************************************
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* Function Name : CH554UART0RcvByte()
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* Description : CH554UART0 receives a byte
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* Return : SBUF
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*******************************************************************************/
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inline uint8_t CH554UART0RcvByte( )
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* Function Name : CH554UART0RcvByte()
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* Description : CH554UART0 receives a byte
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* Return : SBUF
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*******************************************************************************/
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inline uint8_t CH554UART0RcvByte()
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{
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while(RI == 0); // wait for uart rx interrupt flag
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while (RI == 0)
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; // Wait for uart rx interrupt flag
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RI = 0;
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return SBUF;
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}
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/*******************************************************************************
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* Function Name : CH554UART0SendByte(uint8_t SendDat)
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* Description : CH554UART0 sends a byte
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* Input : uint8_t SendDat; the data to be sent
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*******************************************************************************/
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* Function Name : CH554UART0SendByte(uint8_t SendDat)
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* Description : CH554UART0 sends a byte
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* Input : uint8_t SendDat; the data to be sent
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*******************************************************************************/
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inline void CH554UART0SendByte(uint8_t SendDat)
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{
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SBUF = SendDat;
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while(TI ==0); // wait for transmit to finish (TI == 1)
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TI = 0;
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SBUF = SendDat;
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while (TI == 0)
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; // Wait for transmit to finish (TI == 1)
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TI = 0;
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}
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/*******************************************************************************
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* Function Name : CH554UART1Alter()
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* Description : Set the alternate pin mappings for UART1 (TX on P3.2, RX on P3.4)
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*******************************************************************************/
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* Function Name : CH554UART1Alter()
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* Description : Set the alternate pin mappings for UART1 (RX on P3.4, TX on P3.2)
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*******************************************************************************/
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inline void CH554UART1Alter()
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{
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PIN_FUNC |= bUART1_PIN_X;
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PIN_FUNC |= bUART1_PIN_X; // RX on P3.4, TX on P3.2
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}
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/*******************************************************************************
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* Function Name : UART1Setup()
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* Description : CH554串口1初始化
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*******************************************************************************/
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inline void UART1Setup()
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* Function Name : UART1Setup()
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* Description : CH554 serial port 1 initialization
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* RX on P1.6, TX on P1.7
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*
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*******************************************************************************/
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inline void UART1Setup()
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{
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U1SM0 = 0; //UART1选择8位数据位
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U1SMOD = 1; //快速模式
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U1REN = 1; //使能接收
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// should correct for rounding in SBAUD1 calculation
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SBAUD1 = 256 - FREQ_SYS/16/UART1_BAUD;
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U1SM0 = 0; // UART1 selects 8-bit data bit
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U1SMOD = 1; // Fast mode
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U1REN = 1; // Enable receiving
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// Should correct for rounding in SBAUD1 calculation
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SBAUD1 = 256 - FREQ_SYS/16/UART1_BAUD; // Calculation for Fast mode
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IE_UART1 = 1; // Enable UART1 interrupt
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}
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/*******************************************************************************
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* Function Name : CH554UART1RcvByte()
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* Description : CH554UART1接收一个字节
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* Return : SBUF
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*******************************************************************************/
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* Function Name : UART1Clean()
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* Description : Read out spurious data
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*******************************************************************************/
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inline void UART1Clean()
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{
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uint8_t tmp;
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while (U1RI) {
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tmp = SBUF1;
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U1RI = 0;
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}
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}
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/*******************************************************************************
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* Function Name : CH554UART1RcvByte()
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* Description : CH554UART1 receives a byte
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* Return : SBUF
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*******************************************************************************/
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inline uint8_t CH554UART1RcvByte( )
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{
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while(U1RI == 0); //查询接收，中断方式可不用
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while (U1RI == 0) // Query reception, interrupt mode is not required
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;
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U1RI = 0;
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return SBUF1;
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}
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/*******************************************************************************
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* Function Name : CH554UART1SendByte(uint8_t SendDat)
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* Description : CH554UART1发送一个字节
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* Input : uint8_t SendDat；要发送的数据
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*******************************************************************************/
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* Function Name : CH554UART1SendByte(uint8_t SendDat)
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* Description : CH554UART1 sends a byte
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* Input : uint8_t SendDat; data to be sent
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*******************************************************************************/
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inline void CH554UART1SendByte(uint8_t SendDat)
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{
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SBUF1 = SendDat; //查询发送，中断方式可不用下面2条语句,但发送前需TI=0
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while(U1TI ==0);
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SBUF1 = SendDat; // Query sending, the interrupt mode does not need the following two statements, but TI=0 is required before sending
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while (U1TI == 0)
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;
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U1TI = 0;
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}
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/*******************************************************************************
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* Function Name : CH554UART1SendBuffer(uint8_t SendDat)
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* Description : CH554UART1 sends a complete buffer
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* Input : uint8_t *Buf; Data to be sent
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* Input : uint32_t Len; Length of data
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*******************************************************************************/
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inline void CH554UART1SendBuffer(uint8_t *Buf, uint32_t Len)
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{
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uint32_t Count = 0;
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while (Count < Len) {
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SBUF1 = Buf[Count++];
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while (U1TI == 0)
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;
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U1TI = 0;
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}
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}
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#if SDCC < 370
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@ -149,16 +217,15 @@ int getchar(void);
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*******************************************************************************/
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inline void CH554WDTModeSelect(uint8_t mode)
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{
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SAFE_MOD = 0x55;
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SAFE_MOD = 0xaa; //Enter Safe Mode
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if(mode){
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GLOBAL_CFG |= bWDOG_EN; //Start watchdog reset
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}
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else GLOBAL_CFG &= ~bWDOG_EN; //Start watchdog only as a timer
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SAFE_MOD = 0x00; //exit safe Mode
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WDOG_COUNT = 0; //Watchdog assignment initial value
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SAFE_MOD = 0x55;
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SAFE_MOD = 0xaa; // Enter Safe Mode
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if (mode) {
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GLOBAL_CFG |= bWDOG_EN; // Start watchdog reset
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} else {
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GLOBAL_CFG &= ~bWDOG_EN; //Start watchdog only as a timer
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}
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SAFE_MOD = 0x00; // Exit safe Mode
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WDOG_COUNT = 0; // Watchdog assignment initial value
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}
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/*******************************************************************************
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@ -173,12 +240,12 @@ inline void CH554WDTModeSelect(uint8_t mode)
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*******************************************************************************/
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inline void CH554WDTFeed(uint8_t tim)
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{
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WDOG_COUNT = tim; // Watchdog counter assignment
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WDOG_COUNT = tim; // Watchdog counter assignment
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}
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// Set pin p1.4 and p1.5 to GPIO output mode.
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void gpio_init();
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void gpio_set(uint8_t pin);
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void gpio_unset(uint8_t pin);
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#endif
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