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[PSOC™] 【英飞凌PSOC 4000T DIY】串行通信接口之UART

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 楼主| 南来之风 发表于 2025-4-22 21:24 | 显示全部楼层 |阅读模式
DIY, PSOC, SOC, UART, ps
PSOC™ 4000T有两路SCB即Serial Communication Block，可以被配置为SPI、I2C和UART。

这是一个全功能的UART，运行速度高达1mbps。此外，它还支持9位多处理器模式,允许通过普通RX和TX线路连接的外设寻址。该模块支持常见的UART功能，如奇偶校验、中断检测和帧错误。

从数据手册看到，P2.2，P2.3可以分别用于uart.rx与uart.tx。


硬件实物：
打开Modus IDE，点击New Application开始创建新的工程。

选择器件型号：

选择外设UART：

点击Device Configurator，进入图形化外设配置界面。

配置SCB 0为UART模式。TX P2.3， RX P2.2， 115200等参数。


实物照片：

核心代码：
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  1. int main(void)
    

  2. {
    

  3.     cy_rslt_t result;
    

  4.     uint32_t read_data;
    

  5.     cy_en_scb_uart_status_t initstatus;
    


  6. 

  7.     /* Turn off the USER LED */
    

  8.     Cy_GPIO_Write(CYBSP_LED1_PORT, CYBSP_LED1_NUM, LED_OFF);
    


  9. 

  10.     /* Initialize the device and board peripherals */
    

  11.     result = cybsp_init() ;
    


  12. 

  13.     /* Board init failed. Stop program execution */
    

  14.     if (result != CY_RSLT_SUCCESS)
    

  15.     {
    

  16.         CY_ASSERT(0);
    

  17.     }
    


  18. 

  19.     /* Initialize the UART */
    

  20.     initstatus = Cy_SCB_UART_Init(CYBSP_UART_HW, &CYBSP_UART_config, &CYBSP_UART_context);
    


  21. 

  22.     /* Initialization failed. Handle error */
    

  23.     if(initstatus!=CY_SCB_UART_SUCCESS)
    

  24.     {
    

  25.         handle_error();
    

  26.     }
    


  27. 

  28.     /* Enable global interrupts */
    

  29.     __enable_irq();
    


  30. 

  31.     Cy_SCB_UART_Enable(CYBSP_UART_HW);
    


  32. 

  33.     /* Transmit Header to the Terminal */
    

  34.     Cy_SCB_UART_PutString(CYBSP_UART_HW, "\x1b[2J\x1b[;H");
    

  35.     Cy_SCB_UART_PutString(CYBSP_UART_HW, "***********************************************************\r\n");
    

  36.     Cy_SCB_UART_PutString(CYBSP_UART_HW, "PSoC 4 MCU UART transmit and receive\r\n");
    

  37.     Cy_SCB_UART_PutString(CYBSP_UART_HW, "***********************************************************\r\n\n");
    

  38.     Cy_SCB_UART_PutString(CYBSP_UART_HW, ">> Start typing to see the echo on the screen \r\n\n");
    


  39. 

  40.    for (;;)
    

  41.     {
    

  42.         /* Check if there is a received character from user console */
    

  43.         if (0UL != Cy_SCB_UART_GetNumInRxFifo(CYBSP_UART_HW))
    

  44.         {
    

  45.             /* Re-transmit whatever the user types on the console */
    

  46.             read_data = Cy_SCB_UART_Get(CYBSP_UART_HW);
    

  47.             while (0UL == Cy_SCB_UART_Put(CYBSP_UART_HW,read_data))
    

  48.             {
    

  49.             }
    

  50.         }
    

  51.     }
    

  52. }


编译后，烧录：
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  1. Started by GNU MCU Eclipse
    

  2. Open On-Chip Debugger 0.12.0+dev-5.7.0.3672 (2025-03-04-03:08)
    

  3. Licensed under GNU GPL v2
    

  4. For bug reports, read
    

  5.         http://openocd.org/doc/doxygen/bugs.html
    

  6. ********************************************************************************
    

  7. * !!! OBSOLETE target 'psoc4.cfg' - will be removed soon.                      *
    

  8. * Use 'infineon/psoc4.cfg' target instead.                                     *
    

  9. ********************************************************************************
    

  10. Info : auto-selecting first available session transport "swd". To override use 'transport select <transport>'.
    

  11. ** Auto-acquire enabled, use "set PSOC4_USE_ACQUIRE 0" to disable
    

  12. adapter speed: 2000 kHz
    

  13. Info : Using CMSIS-DAPv2 interface with VID:PID=0x04b4:0xf155, serial=0D04189E02272400
    

  14. Info : CMSIS-DAP: SWD supported
    

  15. Info : CMSIS-DAP: Atomic commands supported
    

  16. Info : CMSIS-DAP: FW Version = 2.0.0
    

  17. Info : CMSIS-DAP: Interface Initialised (SWD)
    

  18. Info : SWCLK/TCK = 1 SWDIO/TMS = 1 TDI = 0 TDO = 0 nTRST = 0 nRESET = 1
    

  19. Info : CMSIS-DAP: Interface ready
    

  20. Info : KitProg3: FW version: 2.70.1480
    

  21. Info : KitProg3: Pipelined transfers enabled
    

  22. Info : KitProg3: Asynchronous USB transfers enabled
    

  23. Info : VTarget = 3.317 V
    

  24. Info : kitprog3: acquiring device in Test Mode using 'PSOC 4' target and 'xres' reset...
    

  25. Info : clock speed 2000 kHz
    

  26. Info : SWD DPIDR 0x0bc11477
    

  27. Info : [psoc4.cpu] Cortex-M0+ r0p1 processor detected
    

  28. Info : [psoc4.cpu] target has 4 breakpoints, 2 watchpoints
    

  29. *****************************************
    

  30. ** Silicon: 0x3612, Family: 0xC6, Rev.: 0x22 (B1)
    

  31. ** Detected Family: PSoC 4000T
    

  32. ** Detected Device: CY8C4046LQI-T452
    

  33. ** Detected Main Flash size, kb: 64
    

  34. ** Chip Protection: OPEN
    

  35. *****************************************
    

  36. Info : [psoc4.mem_ap] Examination succeed
    

  37. Info : [psoc4.cpu] Examination succeed
    

  38. Info : gdb port disabled
    

  39. Info : starting gdb server for psoc4.cpu on 3333
    

  40. Info : Listening on port 3333 for gdb connections
    

  41. Info : SWD DPIDR 0x0bc11477
    

  42. Info : kitprog3: acquiring device in Test Mode using 'PSOC 4' target and 'xres' reset...
    

  43. [psoc4.cpu] halted due to debug-request, current mode: Thread 
    

  44. xPSR: 0xa1000000 pc: 0x10000040 msp: 0x20001fe8
    

  45. ** Device acquired successfully
    

  46. Started by GNU MCU Eclipse
    

  47. Info : Listening on port 6666 for tcl connections
    

  48. Info : Listening on port 4444 for telnet connections
    

  49. Info : accepting 'gdb' connection on tcp/3333
    

  50. Info : New GDB Connection: 1, Target psoc4.cpu, state: halted
    

  51. Warn : Prefer GDB command "target extended-remote :3333" instead of "target remote :3333"
    

  52. Info : SWD DPIDR 0x0bc11477
    

  53. Error: Failed to read memory at 0x10000040
    

  54. semihosting is enabled
    

  55. Warn : No RTOS could be auto-detected!
    

  56. Warn : No RTOS could be auto-detected!
    

  57. Verifying region (0x00000000,      4712)... Mismatch
    

  58. Info : Data mismatch, proceeding with flash programming
    

  59. Info : Padding image section 0 at 0x00001268 with 24 bytes (bank write end alignment)
    

  60. Warn : Only mass erase available, erase skipped! (psoc4 mass_erase)
    


  61. 

  62. [  5%] [#                               ] [ Programming ]
    

  63. [  8%] [##                              ] [ Programming ]
    

  64. [ 10%] [###                             ] [ Programming ]
    

  65. [ 13%] [####                            ] [ Programming ]
    

  66. [ 16%] [#####                           ] [ Programming ]
    

  67. [ 21%] [######                          ] [ Programming ]
    

  68. [ 24%] [#######                         ] [ Programming ]
    

  69. [ 27%] [########                        ] [ Programming ]
    

  70. [ 29%] [#########                       ] [ Programming ]
    

  71. [ 32%] [##########                      ] [ Programming ]
    

  72. [ 35%] [###########                     ] [ Programming ]
    

  73. [ 40%] [############                    ] [ Programming ]
    

  74. [ 43%] [#############                   ] [ Programming ]
    

  75. [ 45%] [##############                  ] [ Programming ]
    

  76. [ 48%] [###############                 ] [ Programming ]
    

  77. [ 51%] [################                ] [ Programming ]
    

  78. [ 54%] [#################               ] [ Programming ]
    

  79. [ 59%] [##################              ] [ Programming ]
    

  80. [ 62%] [###################             ] [ Programming ]
    

  81. [ 64%] [####################            ] [ Programming ]
    

  82. [ 67%] [#####################           ] [ Programming ]
    

  83. [ 70%] [######################          ] [ Programming ]
    

  84. [ 72%] [#######################         ] [ Programming ]
    

  85. [ 75%] [########################        ] [ Programming ]
    

  86. [ 81%] [#########################       ] [ Programming ]
    

  87. [ 83%] [##########################      ] [ Programming ]
    

  88. [ 86%] [###########################     ] [ Programming ]
    

  89. [ 89%] [############################    ] [ Programming ]
    

  90. [ 91%] [#############################   ] [ Programming ]
    

  91. [ 94%] [##############################  ] [ Programming ]
    

  92. [ 97%] [############################### ] [ Programming ]
    

  93. [100%] [################################] [ Programming ]
    

  94. Info : SWD DPIDR 0x0bc11477
    

  95. Info : kitprog3: acquiring device in Test Mode using 'PSOC 4' target and 'xres' reset...
    

  96. [psoc4.cpu] halted due to debug-request, current mode: Thread 
    

  97. xPSR: 0xa1000000 pc: 0x10000040 msp: 0x20001fe8, semihosting
    

  98. ** Device acquired successfully
    

  99. Info : SWD DPIDR 0x0bc11477
    

  100. Info : kitprog3: acquiring device in Test Mode using 'PSOC 4' target and 'xres' reset...
    

  101. [psoc4.cpu] halted due to debug-request, current mode: Thread 
    

  102. xPSR: 0xa1000000 pc: 0x10000040 msp: 0x20001fe8, semihosting
    

  103. ** Device acquired successfully
    

  104. Info : psoc4.cpu: bkpt @0x00000359, issuing SYSRESETREQ
    

  105. [psoc4.cpu] halted due to debug-request, current mode: Thread 
    

  106. xPSR: 0x61000000 pc: 0x00000358 msp: 0x20002000, semihosting
    

  107. ===== arm v7m registers
    

  108. (0) r0 (/32): 0x40100004
    

  109. (1) r1 (/32): 0x00000359
    

  110. (2) r2 (/32): 0x00000000
    

  111. (3) r3 (/32): 0x00000000
    

  112. (4) r4 (/32): 0x20002000
    

  113. (5) r5 (/32): 0x08000000
    

  114. (6) r6 (/32): 0x0ffff060
    

  115. (7) r7 (/32): 0x00000000
    

  116. (8) r8 (/32): 0x200007e4
    

  117. (9) r9 (/32): 0x40290000
    

  118. (10) r10 (/32): 0x1fff2000
    

  119. (11) r11 (/32): 0x00000000
    

  120. (12) r12 (/32): 0x00400200
    

  121. (13) sp (/32): 0x20002000
    

  122. (14) lr (/32): 0x1000012d
    

  123. (15) pc (/32): 0x00000358
    

  124. (16) xpsr (/32): 0x61000000
    

  125. (17) msp (/32): 0x20002000
    

  126. (18) psp (/32): 0x40100110
    

  127. (20) primask (/1): 0x00
    

  128. (21) basepri (/8): 0x00
    

  129. (22) faultmask (/1): 0x00
    

  130. (23) control (/3): 0x00
    

  131. ===== Cortex-M DWT registers
    

  132. Warn : keep_alive() was not invoked in the 1000 ms timelimit. GDB alive packet not sent! (2733 ms). Workaround: increase "set remotetimeout" in GDB
    

  133. Warn : keep_alive() was not invoked in the 1000 ms timelimit. GDB alive packet not sent! (1418 ms). Workaround: increase "set remotetimeout" in GDB
    

  134. Error: [psoc4.cpu] not halted (gdb fileio)
    

  135. Polling target psoc4.cpu failed, trying to reexamine
    

  136. Info : SWD DPIDR 0x0bc11477
    

  137. Info : [psoc4.cpu] Cortex-M0+ r0p1 processor detected
    

  138. Info : [psoc4.cpu] target has 4 breakpoints, 2 watchpoints
    

  139. Info : [psoc4.cpu] Examination succeed
    

  140. Info : [psoc4.cpu] external reset detected
    

  141. Polling target psoc4.cpu failed, trying to reexamine
    

  142. Info : SWD DPIDR 0x0bc11477
    

  143. Info : [psoc4.cpu] Cortex-M0+ r0p1 processor detected
    

  144. Info : [psoc4.cpu] target has 4 breakpoints, 2 watchpoints
    

  145. Info : [psoc4.cpu] Examination succeed
    

  146. Info : [psoc4.cpu] external reset detected
    

  147. Polling target psoc4.cpu failed, trying to reexamine
    

  148. Info : SWD DPIDR 0x0bc11477
    

  149. Info : [psoc4.cpu] Cortex-M0+ r0p1 processor detected
    

  150. Info : [psoc4.cpu] target has 4 breakpoints, 2 watchpoints
    

  151. Info : [psoc4.cpu] Examination succeed
    

  152. Info : [psoc4.cpu] external reset detected
    

  153. Polling target psoc4.cpu failed, trying to reexamine
    

  154. Info : SWD DPIDR 0x0bc11477
    

  155. Info : [psoc4.cpu] Cortex-M0+ r0p1 processor detected
    

  156. Info : [psoc4.cpu] target has 4 breakpoints, 2 watchpoints
    

  157. Info : [psoc4.cpu] Examination succeed
    

  158. Info : [psoc4.cpu] external reset detected

打开串口助手，可以看到欢迎界面。在串口输入：“hello 21ic”，可以看到相同的内容被打印到屏幕上。







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Amazingxixixi 发表于 2025-4-24 16:18 | 显示全部楼层
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