These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
UART/HWFlowControl/uart_hw_flow_control.c@0:bf7b9fba3924, 2011-03-20 (annotated)
- Committer:
- frank26080115
- Date:
- Sun Mar 20 05:38:56 2011 +0000
- Revision:
- 0:bf7b9fba3924
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
frank26080115 | 0:bf7b9fba3924 | 1 | /*** |
frank26080115 | 0:bf7b9fba3924 | 2 | * @file uart_hw_flow_control.c |
frank26080115 | 0:bf7b9fba3924 | 3 | * @purpose This example describes how to using UART Hardware flow control mode |
frank26080115 | 0:bf7b9fba3924 | 4 | * @version 2.0 |
frank26080115 | 0:bf7b9fba3924 | 5 | * @date 10. June. 2010 |
frank26080115 | 0:bf7b9fba3924 | 6 | * @author NXP MCU SW Application Team |
frank26080115 | 0:bf7b9fba3924 | 7 | *--------------------------------------------------------------------- |
frank26080115 | 0:bf7b9fba3924 | 8 | * Software that is described herein is for illustrative purposes only |
frank26080115 | 0:bf7b9fba3924 | 9 | * which provides customers with programming information regarding the |
frank26080115 | 0:bf7b9fba3924 | 10 | * products. This software is supplied "AS IS" without any warranties. |
frank26080115 | 0:bf7b9fba3924 | 11 | * NXP Semiconductors assumes no responsibility or liability for the |
frank26080115 | 0:bf7b9fba3924 | 12 | * use of the software, conveys no license or title under any patent, |
frank26080115 | 0:bf7b9fba3924 | 13 | * copyright, or mask work right to the product. NXP Semiconductors |
frank26080115 | 0:bf7b9fba3924 | 14 | * reserves the right to make changes in the software without |
frank26080115 | 0:bf7b9fba3924 | 15 | * notification. NXP Semiconductors also make no representation or |
frank26080115 | 0:bf7b9fba3924 | 16 | * warranty that such application will be suitable for the specified |
frank26080115 | 0:bf7b9fba3924 | 17 | * use without further testing or modification. |
frank26080115 | 0:bf7b9fba3924 | 18 | **********************************************************************/ |
frank26080115 | 0:bf7b9fba3924 | 19 | #include "lpc17xx_uart.h" |
frank26080115 | 0:bf7b9fba3924 | 20 | #include "lpc17xx_libcfg.h" |
frank26080115 | 0:bf7b9fba3924 | 21 | #include "lpc17xx_pinsel.h" |
frank26080115 | 0:bf7b9fba3924 | 22 | |
frank26080115 | 0:bf7b9fba3924 | 23 | /* Example group ----------------------------------------------------------- */ |
frank26080115 | 0:bf7b9fba3924 | 24 | /** @defgroup UART_HWFlowControl HWFlowControl |
frank26080115 | 0:bf7b9fba3924 | 25 | * @ingroup UART_Examples |
frank26080115 | 0:bf7b9fba3924 | 26 | * @{ |
frank26080115 | 0:bf7b9fba3924 | 27 | */ |
frank26080115 | 0:bf7b9fba3924 | 28 | |
frank26080115 | 0:bf7b9fba3924 | 29 | /************************** PRIVATE DEFINITIONS *************************/ |
frank26080115 | 0:bf7b9fba3924 | 30 | #define TEST_UART (LPC_UART_TypeDef *)LPC_UART1 |
frank26080115 | 0:bf7b9fba3924 | 31 | |
frank26080115 | 0:bf7b9fba3924 | 32 | /************************** PRIVATE VARIABLES *************************/ |
frank26080115 | 0:bf7b9fba3924 | 33 | uint8_t menu1[] = "Hello NXP Semiconductors \n\r"; |
frank26080115 | 0:bf7b9fba3924 | 34 | uint8_t menu2[] = "UART hardware flow control mode demo \n\r\t MCU LPC17xx - ARM Cortex-M3 \n\r\t UART1 - 9600bps \n\r"; |
frank26080115 | 0:bf7b9fba3924 | 35 | uint8_t menu3[] = "UART demo terminated!"; |
frank26080115 | 0:bf7b9fba3924 | 36 | |
frank26080115 | 0:bf7b9fba3924 | 37 | /************************** PRIVATE FUNCTIONS *************************/ |
frank26080115 | 0:bf7b9fba3924 | 38 | void print_menu(void); |
frank26080115 | 0:bf7b9fba3924 | 39 | |
frank26080115 | 0:bf7b9fba3924 | 40 | /*-------------------------PRIVATE FUNCTIONS------------------------------*/ |
frank26080115 | 0:bf7b9fba3924 | 41 | /*********************************************************************//** |
frank26080115 | 0:bf7b9fba3924 | 42 | * @brief Print Welcome menu |
frank26080115 | 0:bf7b9fba3924 | 43 | * @param[in] none |
frank26080115 | 0:bf7b9fba3924 | 44 | * @return None |
frank26080115 | 0:bf7b9fba3924 | 45 | **********************************************************************/ |
frank26080115 | 0:bf7b9fba3924 | 46 | void print_menu(void) |
frank26080115 | 0:bf7b9fba3924 | 47 | { |
frank26080115 | 0:bf7b9fba3924 | 48 | UART_Send(TEST_UART, menu1, sizeof(menu1), BLOCKING); |
frank26080115 | 0:bf7b9fba3924 | 49 | UART_Send(TEST_UART, menu2, sizeof(menu2), BLOCKING); |
frank26080115 | 0:bf7b9fba3924 | 50 | } |
frank26080115 | 0:bf7b9fba3924 | 51 | |
frank26080115 | 0:bf7b9fba3924 | 52 | /*-------------------------MAIN FUNCTION------------------------------*/ |
frank26080115 | 0:bf7b9fba3924 | 53 | /*********************************************************************//** |
frank26080115 | 0:bf7b9fba3924 | 54 | * @brief c_entry: Main UART program body |
frank26080115 | 0:bf7b9fba3924 | 55 | * @param[in] None |
frank26080115 | 0:bf7b9fba3924 | 56 | * @return int |
frank26080115 | 0:bf7b9fba3924 | 57 | **********************************************************************/ |
frank26080115 | 0:bf7b9fba3924 | 58 | int c_entry(void) |
frank26080115 | 0:bf7b9fba3924 | 59 | { |
frank26080115 | 0:bf7b9fba3924 | 60 | // UART Configuration structure variable |
frank26080115 | 0:bf7b9fba3924 | 61 | UART_CFG_Type UARTConfigStruct; |
frank26080115 | 0:bf7b9fba3924 | 62 | // UART FIFO configuration Struct variable |
frank26080115 | 0:bf7b9fba3924 | 63 | UART_FIFO_CFG_Type UARTFIFOConfigStruct; |
frank26080115 | 0:bf7b9fba3924 | 64 | // Pin configuration for UART0 |
frank26080115 | 0:bf7b9fba3924 | 65 | PINSEL_CFG_Type PinCfg; |
frank26080115 | 0:bf7b9fba3924 | 66 | |
frank26080115 | 0:bf7b9fba3924 | 67 | uint32_t idx, len; |
frank26080115 | 0:bf7b9fba3924 | 68 | __IO FlagStatus exitflag; |
frank26080115 | 0:bf7b9fba3924 | 69 | uint8_t buffer[10]; |
frank26080115 | 0:bf7b9fba3924 | 70 | |
frank26080115 | 0:bf7b9fba3924 | 71 | /* |
frank26080115 | 0:bf7b9fba3924 | 72 | * Initialize UART1 pin connect |
frank26080115 | 0:bf7b9fba3924 | 73 | */ |
frank26080115 | 0:bf7b9fba3924 | 74 | PinCfg.Funcnum = 2; |
frank26080115 | 0:bf7b9fba3924 | 75 | PinCfg.OpenDrain = 0; |
frank26080115 | 0:bf7b9fba3924 | 76 | PinCfg.Pinmode = 0; |
frank26080115 | 0:bf7b9fba3924 | 77 | PinCfg.Pinnum = 0; |
frank26080115 | 0:bf7b9fba3924 | 78 | PinCfg.Portnum = 2; |
frank26080115 | 0:bf7b9fba3924 | 79 | PINSEL_ConfigPin(&PinCfg);//P2.0 TXD1 |
frank26080115 | 0:bf7b9fba3924 | 80 | PinCfg.Pinnum = 1; |
frank26080115 | 0:bf7b9fba3924 | 81 | PINSEL_ConfigPin(&PinCfg);//P2.1 RXD1 |
frank26080115 | 0:bf7b9fba3924 | 82 | PinCfg.Pinnum = 2; |
frank26080115 | 0:bf7b9fba3924 | 83 | PINSEL_ConfigPin(&PinCfg);//P2.2 CTS1 |
frank26080115 | 0:bf7b9fba3924 | 84 | PinCfg.Pinnum = 7; |
frank26080115 | 0:bf7b9fba3924 | 85 | PINSEL_ConfigPin(&PinCfg);//P2.7 RTS1 |
frank26080115 | 0:bf7b9fba3924 | 86 | |
frank26080115 | 0:bf7b9fba3924 | 87 | /* Initialize UART Configuration parameter structure to default state: |
frank26080115 | 0:bf7b9fba3924 | 88 | * Baudrate = 9600bps |
frank26080115 | 0:bf7b9fba3924 | 89 | * 8 data bit |
frank26080115 | 0:bf7b9fba3924 | 90 | * 1 Stop bit |
frank26080115 | 0:bf7b9fba3924 | 91 | * None parity |
frank26080115 | 0:bf7b9fba3924 | 92 | */ |
frank26080115 | 0:bf7b9fba3924 | 93 | UART_ConfigStructInit(&UARTConfigStruct); |
frank26080115 | 0:bf7b9fba3924 | 94 | |
frank26080115 | 0:bf7b9fba3924 | 95 | // Initialize UART0 peripheral with given to corresponding parameter |
frank26080115 | 0:bf7b9fba3924 | 96 | UART_Init(TEST_UART, &UARTConfigStruct); |
frank26080115 | 0:bf7b9fba3924 | 97 | |
frank26080115 | 0:bf7b9fba3924 | 98 | /* Initialize FIFOConfigStruct to default state: |
frank26080115 | 0:bf7b9fba3924 | 99 | * - FIFO_DMAMode = DISABLE |
frank26080115 | 0:bf7b9fba3924 | 100 | * - FIFO_Level = UART_FIFO_TRGLEV0 |
frank26080115 | 0:bf7b9fba3924 | 101 | * - FIFO_ResetRxBuf = ENABLE |
frank26080115 | 0:bf7b9fba3924 | 102 | * - FIFO_ResetTxBuf = ENABLE |
frank26080115 | 0:bf7b9fba3924 | 103 | * - FIFO_State = ENABLE |
frank26080115 | 0:bf7b9fba3924 | 104 | */ |
frank26080115 | 0:bf7b9fba3924 | 105 | UART_FIFOConfigStructInit(&UARTFIFOConfigStruct); |
frank26080115 | 0:bf7b9fba3924 | 106 | |
frank26080115 | 0:bf7b9fba3924 | 107 | // Initialize FIFO for UART0 peripheral |
frank26080115 | 0:bf7b9fba3924 | 108 | UART_FIFOConfig(TEST_UART, &UARTFIFOConfigStruct); |
frank26080115 | 0:bf7b9fba3924 | 109 | |
frank26080115 | 0:bf7b9fba3924 | 110 | // Configure UART1 hardware flow control RTS/CTS |
frank26080115 | 0:bf7b9fba3924 | 111 | UART_FullModemForcePinState((LPC_UART1_TypeDef *)LPC_UART1,UART1_MODEM_PIN_RTS,ACTIVE); |
frank26080115 | 0:bf7b9fba3924 | 112 | |
frank26080115 | 0:bf7b9fba3924 | 113 | // Enable UART Transmit |
frank26080115 | 0:bf7b9fba3924 | 114 | UART_TxCmd(TEST_UART, ENABLE); |
frank26080115 | 0:bf7b9fba3924 | 115 | |
frank26080115 | 0:bf7b9fba3924 | 116 | // print welcome screen |
frank26080115 | 0:bf7b9fba3924 | 117 | print_menu(); |
frank26080115 | 0:bf7b9fba3924 | 118 | |
frank26080115 | 0:bf7b9fba3924 | 119 | // Reset exit flag |
frank26080115 | 0:bf7b9fba3924 | 120 | exitflag = RESET; |
frank26080115 | 0:bf7b9fba3924 | 121 | |
frank26080115 | 0:bf7b9fba3924 | 122 | /* Read some data from the buffer */ |
frank26080115 | 0:bf7b9fba3924 | 123 | while (exitflag == RESET) |
frank26080115 | 0:bf7b9fba3924 | 124 | { |
frank26080115 | 0:bf7b9fba3924 | 125 | len = 0; |
frank26080115 | 0:bf7b9fba3924 | 126 | while (len == 0) |
frank26080115 | 0:bf7b9fba3924 | 127 | { |
frank26080115 | 0:bf7b9fba3924 | 128 | len = UART_Receive(TEST_UART, buffer, sizeof(buffer), NONE_BLOCKING); |
frank26080115 | 0:bf7b9fba3924 | 129 | } |
frank26080115 | 0:bf7b9fba3924 | 130 | |
frank26080115 | 0:bf7b9fba3924 | 131 | /* Got some data */ |
frank26080115 | 0:bf7b9fba3924 | 132 | idx = 0; |
frank26080115 | 0:bf7b9fba3924 | 133 | while (idx < len) |
frank26080115 | 0:bf7b9fba3924 | 134 | { |
frank26080115 | 0:bf7b9fba3924 | 135 | if (buffer[idx] == 27) |
frank26080115 | 0:bf7b9fba3924 | 136 | { |
frank26080115 | 0:bf7b9fba3924 | 137 | /* ESC key, set exit flag */ |
frank26080115 | 0:bf7b9fba3924 | 138 | UART_Send(TEST_UART, menu3, sizeof(menu3), BLOCKING); |
frank26080115 | 0:bf7b9fba3924 | 139 | exitflag = SET; |
frank26080115 | 0:bf7b9fba3924 | 140 | } |
frank26080115 | 0:bf7b9fba3924 | 141 | else if (buffer[idx] == 'r') |
frank26080115 | 0:bf7b9fba3924 | 142 | { |
frank26080115 | 0:bf7b9fba3924 | 143 | print_menu(); |
frank26080115 | 0:bf7b9fba3924 | 144 | } |
frank26080115 | 0:bf7b9fba3924 | 145 | else |
frank26080115 | 0:bf7b9fba3924 | 146 | { |
frank26080115 | 0:bf7b9fba3924 | 147 | /* Echo it back */ |
frank26080115 | 0:bf7b9fba3924 | 148 | UART_Send(TEST_UART, &buffer[idx], 1, BLOCKING); |
frank26080115 | 0:bf7b9fba3924 | 149 | } |
frank26080115 | 0:bf7b9fba3924 | 150 | idx++; |
frank26080115 | 0:bf7b9fba3924 | 151 | } |
frank26080115 | 0:bf7b9fba3924 | 152 | } |
frank26080115 | 0:bf7b9fba3924 | 153 | |
frank26080115 | 0:bf7b9fba3924 | 154 | // wait for current transmission complete - THR must be empty |
frank26080115 | 0:bf7b9fba3924 | 155 | while (UART_CheckBusy(TEST_UART) == SET); |
frank26080115 | 0:bf7b9fba3924 | 156 | |
frank26080115 | 0:bf7b9fba3924 | 157 | // DeInitialize UART0 peripheral |
frank26080115 | 0:bf7b9fba3924 | 158 | UART_DeInit(TEST_UART); |
frank26080115 | 0:bf7b9fba3924 | 159 | |
frank26080115 | 0:bf7b9fba3924 | 160 | /* Loop forever */ |
frank26080115 | 0:bf7b9fba3924 | 161 | while(1); |
frank26080115 | 0:bf7b9fba3924 | 162 | return 1; |
frank26080115 | 0:bf7b9fba3924 | 163 | } |
frank26080115 | 0:bf7b9fba3924 | 164 | |
frank26080115 | 0:bf7b9fba3924 | 165 | /* With ARM and GHS toolsets, the entry point is main() - this will |
frank26080115 | 0:bf7b9fba3924 | 166 | allow the linker to generate wrapper code to setup stacks, allocate |
frank26080115 | 0:bf7b9fba3924 | 167 | heap area, and initialize and copy code and data segments. For GNU |
frank26080115 | 0:bf7b9fba3924 | 168 | toolsets, the entry point is through __start() in the crt0_gnu.asm |
frank26080115 | 0:bf7b9fba3924 | 169 | file, and that startup code will setup stacks and data */ |
frank26080115 | 0:bf7b9fba3924 | 170 | int main(void) |
frank26080115 | 0:bf7b9fba3924 | 171 | { |
frank26080115 | 0:bf7b9fba3924 | 172 | return c_entry(); |
frank26080115 | 0:bf7b9fba3924 | 173 | } |
frank26080115 | 0:bf7b9fba3924 | 174 | |
frank26080115 | 0:bf7b9fba3924 | 175 | |
frank26080115 | 0:bf7b9fba3924 | 176 | #ifdef DEBUG |
frank26080115 | 0:bf7b9fba3924 | 177 | /******************************************************************************* |
frank26080115 | 0:bf7b9fba3924 | 178 | * @brief Reports the name of the source file and the source line number |
frank26080115 | 0:bf7b9fba3924 | 179 | * where the CHECK_PARAM error has occurred. |
frank26080115 | 0:bf7b9fba3924 | 180 | * @param[in] file Pointer to the source file name |
frank26080115 | 0:bf7b9fba3924 | 181 | * @param[in] line assert_param error line source number |
frank26080115 | 0:bf7b9fba3924 | 182 | * @return None |
frank26080115 | 0:bf7b9fba3924 | 183 | *******************************************************************************/ |
frank26080115 | 0:bf7b9fba3924 | 184 | void check_failed(uint8_t *file, uint32_t line) |
frank26080115 | 0:bf7b9fba3924 | 185 | { |
frank26080115 | 0:bf7b9fba3924 | 186 | /* User can add his own implementation to report the file name and line number, |
frank26080115 | 0:bf7b9fba3924 | 187 | ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
frank26080115 | 0:bf7b9fba3924 | 188 | |
frank26080115 | 0:bf7b9fba3924 | 189 | /* Infinite loop */ |
frank26080115 | 0:bf7b9fba3924 | 190 | while(1); |
frank26080115 | 0:bf7b9fba3924 | 191 | } |
frank26080115 | 0:bf7b9fba3924 | 192 | #endif |
frank26080115 | 0:bf7b9fba3924 | 193 | /* |
frank26080115 | 0:bf7b9fba3924 | 194 | * @} |
frank26080115 | 0:bf7b9fba3924 | 195 | */ |