Frank 26080115
These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
SSP/sc16is750_int/sc16is750_int.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 sc16is750_int.c |
| frank26080115 | 0:bf7b9fba3924 | 3 | * @purpose This example describes how to use SPP using interrupt mode, |
| frank26080115 | 0:bf7b9fba3924 | 4 | * SSP frame format to communicate with SC16IS750/760 Demo board |
| frank26080115 | 0:bf7b9fba3924 | 5 | * @version 2.0 |
| frank26080115 | 0:bf7b9fba3924 | 6 | * @date 21. May. 2010 |
| frank26080115 | 0:bf7b9fba3924 | 7 | * @author NXP MCU SW Application Team |
| frank26080115 | 0:bf7b9fba3924 | 8 | *--------------------------------------------------------------------- |
| frank26080115 | 0:bf7b9fba3924 | 9 | * Software that is described herein is for illustrative purposes only |
| frank26080115 | 0:bf7b9fba3924 | 10 | * which provides customers with programming information regarding the |
| frank26080115 | 0:bf7b9fba3924 | 11 | * products. This software is supplied "AS IS" without any warranties. |
| frank26080115 | 0:bf7b9fba3924 | 12 | * NXP Semiconductors assumes no responsibility or liability for the |
| frank26080115 | 0:bf7b9fba3924 | 13 | * use of the software, conveys no license or title under any patent, |
| frank26080115 | 0:bf7b9fba3924 | 14 | * copyright, or mask work right to the product. NXP Semiconductors |
| frank26080115 | 0:bf7b9fba3924 | 15 | * reserves the right to make changes in the software without |
| frank26080115 | 0:bf7b9fba3924 | 16 | * notification. NXP Semiconductors also make no representation or |
| frank26080115 | 0:bf7b9fba3924 | 17 | * warranty that such application will be suitable for the specified |
| frank26080115 | 0:bf7b9fba3924 | 18 | * use without further testing or modification. |
| frank26080115 | 0:bf7b9fba3924 | 19 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 20 | #include "lpc17xx_ssp.h" |
| frank26080115 | 0:bf7b9fba3924 | 21 | #include "lpc17xx_libcfg.h" |
| frank26080115 | 0:bf7b9fba3924 | 22 | #include "lpc17xx_pinsel.h" |
| frank26080115 | 0:bf7b9fba3924 | 23 | #include "debug_frmwrk.h" |
| frank26080115 | 0:bf7b9fba3924 | 24 | #include "lpc17xx_gpio.h" |
| frank26080115 | 0:bf7b9fba3924 | 25 | |
| frank26080115 | 0:bf7b9fba3924 | 26 | /* Example group ----------------------------------------------------------- */ |
| frank26080115 | 0:bf7b9fba3924 | 27 | /** @defgroup SSP_sc16is750_int sc16is750_int |
| frank26080115 | 0:bf7b9fba3924 | 28 | * @ingroup SSP_Examples |
| frank26080115 | 0:bf7b9fba3924 | 29 | * @{ |
| frank26080115 | 0:bf7b9fba3924 | 30 | */ |
| frank26080115 | 0:bf7b9fba3924 | 31 | |
| frank26080115 | 0:bf7b9fba3924 | 32 | /************************** PRIVATE DEFINTIONS ***********************/ |
| frank26080115 | 0:bf7b9fba3924 | 33 | // PORT number that /CS pin assigned on |
| frank26080115 | 0:bf7b9fba3924 | 34 | #define CS_PORT_NUM 0 |
| frank26080115 | 0:bf7b9fba3924 | 35 | // PIN number that /CS pin assigned on |
| frank26080115 | 0:bf7b9fba3924 | 36 | #define CS_PIN_NUM 16 |
| frank26080115 | 0:bf7b9fba3924 | 37 | |
| frank26080115 | 0:bf7b9fba3924 | 38 | /* Idle char */ |
| frank26080115 | 0:bf7b9fba3924 | 39 | #define IDLE_CHAR 0xFF |
| frank26080115 | 0:bf7b9fba3924 | 40 | |
| frank26080115 | 0:bf7b9fba3924 | 41 | // Define macro used in command when using SSP with SC16IS740 |
| frank26080115 | 0:bf7b9fba3924 | 42 | #define SC16IS740_WR_CMD(x) ((uint8_t) (x << 3)) |
| frank26080115 | 0:bf7b9fba3924 | 43 | #define SC16IS740_RD_CMD(x) ((uint8_t) ((x << 3) | 0x80)) |
| frank26080115 | 0:bf7b9fba3924 | 44 | |
| frank26080115 | 0:bf7b9fba3924 | 45 | // Define register address of SC16IS740 |
| frank26080115 | 0:bf7b9fba3924 | 46 | #define SC16IS740_IODIR_REG 0x0A |
| frank26080115 | 0:bf7b9fba3924 | 47 | #define SC16IS740_IOSTATE_REG 0x0B |
| frank26080115 | 0:bf7b9fba3924 | 48 | #define SC16IS740_IOCON_REG 0x0E |
| frank26080115 | 0:bf7b9fba3924 | 49 | |
| frank26080115 | 0:bf7b9fba3924 | 50 | /************************** PRIVATE VARIABLES *************************/ |
| frank26080115 | 0:bf7b9fba3924 | 51 | uint8_t menu1[] = |
| frank26080115 | 0:bf7b9fba3924 | 52 | "********************************************************************************\n\r" |
| frank26080115 | 0:bf7b9fba3924 | 53 | "Hello NXP Semiconductors \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 54 | "SSP demo \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 55 | "\t - MCU: LPC17xx \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 56 | "\t - Core: ARM Cortex-M3 \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 57 | "\t - Communicate via: UART0 - 9.6 kbps \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 58 | " An example of SSP using interrupt mode - SPI frame format \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 59 | "to test SSP driver \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 60 | " Using SSP at mode SSP master/8bit on LPC1768 to communicate with \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 61 | " SC16IS750/760 Demo Board \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 62 | " Press '1' to turn on LEDs, '2' to turn off LEDs \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 63 | "********************************************************************************\n\r"; |
| frank26080115 | 0:bf7b9fba3924 | 64 | uint8_t menu2[] = "Demo terminated! \n\r"; |
| frank26080115 | 0:bf7b9fba3924 | 65 | |
| frank26080115 | 0:bf7b9fba3924 | 66 | uint8_t iocon_cfg[2] = {SC16IS740_WR_CMD(SC16IS740_IOCON_REG), 0x00}; |
| frank26080115 | 0:bf7b9fba3924 | 67 | uint8_t iodir_cfg[2] = {SC16IS740_WR_CMD(SC16IS740_IODIR_REG), 0xFF}; |
| frank26080115 | 0:bf7b9fba3924 | 68 | uint8_t iostate_on[2] = {SC16IS740_WR_CMD(SC16IS740_IOSTATE_REG), 0x00}; |
| frank26080115 | 0:bf7b9fba3924 | 69 | uint8_t iostate_off[2] = {SC16IS740_WR_CMD(SC16IS740_IOSTATE_REG), 0xFF}; |
| frank26080115 | 0:bf7b9fba3924 | 70 | uint8_t sspreadbuf[2]; |
| frank26080115 | 0:bf7b9fba3924 | 71 | |
| frank26080115 | 0:bf7b9fba3924 | 72 | /* Status Flag indicates current SSP transmission complete or not */ |
| frank26080115 | 0:bf7b9fba3924 | 73 | __IO FlagStatus complete; |
| frank26080115 | 0:bf7b9fba3924 | 74 | |
| frank26080115 | 0:bf7b9fba3924 | 75 | // SSP Configuration structure variable |
| frank26080115 | 0:bf7b9fba3924 | 76 | SSP_CFG_Type SSP_ConfigStruct; |
| frank26080115 | 0:bf7b9fba3924 | 77 | SSP_DATA_SETUP_Type xferConfig; |
| frank26080115 | 0:bf7b9fba3924 | 78 | |
| frank26080115 | 0:bf7b9fba3924 | 79 | /************************** PRIVATE FUNCTIONS *************************/ |
| frank26080115 | 0:bf7b9fba3924 | 80 | void SSP0_IRQHandler(void); |
| frank26080115 | 0:bf7b9fba3924 | 81 | |
| frank26080115 | 0:bf7b9fba3924 | 82 | void CS_Init(void); |
| frank26080115 | 0:bf7b9fba3924 | 83 | void CS_Force(int32_t state); |
| frank26080115 | 0:bf7b9fba3924 | 84 | void print_menu(void); |
| frank26080115 | 0:bf7b9fba3924 | 85 | |
| frank26080115 | 0:bf7b9fba3924 | 86 | |
| frank26080115 | 0:bf7b9fba3924 | 87 | /*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 88 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 89 | * @brief SSP0 Interrupt used for reading and writing handler |
| frank26080115 | 0:bf7b9fba3924 | 90 | * @param None |
| frank26080115 | 0:bf7b9fba3924 | 91 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 92 | ***********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 93 | void SSP0_IRQHandler(void) |
| frank26080115 | 0:bf7b9fba3924 | 94 | { |
| frank26080115 | 0:bf7b9fba3924 | 95 | SSP_DATA_SETUP_Type *xf_setup; |
| frank26080115 | 0:bf7b9fba3924 | 96 | uint16_t tmp; |
| frank26080115 | 0:bf7b9fba3924 | 97 | uint8_t dataword; |
| frank26080115 | 0:bf7b9fba3924 | 98 | |
| frank26080115 | 0:bf7b9fba3924 | 99 | // Disable all SSP interrupts |
| frank26080115 | 0:bf7b9fba3924 | 100 | SSP_IntConfig(LPC_SSP0, SSP_INTCFG_ROR|SSP_INTCFG_RT|SSP_INTCFG_RX|SSP_INTCFG_TX, DISABLE); |
| frank26080115 | 0:bf7b9fba3924 | 101 | |
| frank26080115 | 0:bf7b9fba3924 | 102 | if(SSP_GetDataSize(LPC_SSP0)>8) |
| frank26080115 | 0:bf7b9fba3924 | 103 | dataword = 1; |
| frank26080115 | 0:bf7b9fba3924 | 104 | else |
| frank26080115 | 0:bf7b9fba3924 | 105 | dataword = 0; |
| frank26080115 | 0:bf7b9fba3924 | 106 | xf_setup = &xferConfig; |
| frank26080115 | 0:bf7b9fba3924 | 107 | // save status |
| frank26080115 | 0:bf7b9fba3924 | 108 | tmp = SSP_GetRawIntStatusReg(LPC_SSP0); |
| frank26080115 | 0:bf7b9fba3924 | 109 | xf_setup->status = tmp; |
| frank26080115 | 0:bf7b9fba3924 | 110 | |
| frank26080115 | 0:bf7b9fba3924 | 111 | // Check overrun error |
| frank26080115 | 0:bf7b9fba3924 | 112 | if (tmp & SSP_RIS_ROR){ |
| frank26080115 | 0:bf7b9fba3924 | 113 | // Clear interrupt |
| frank26080115 | 0:bf7b9fba3924 | 114 | SSP_ClearIntPending(LPC_SSP0, SSP_INTCLR_ROR); |
| frank26080115 | 0:bf7b9fba3924 | 115 | // update status |
| frank26080115 | 0:bf7b9fba3924 | 116 | xf_setup->status |= SSP_STAT_ERROR; |
| frank26080115 | 0:bf7b9fba3924 | 117 | // Set Complete Flag |
| frank26080115 | 0:bf7b9fba3924 | 118 | complete = SET; |
| frank26080115 | 0:bf7b9fba3924 | 119 | return; |
| frank26080115 | 0:bf7b9fba3924 | 120 | } |
| frank26080115 | 0:bf7b9fba3924 | 121 | |
| frank26080115 | 0:bf7b9fba3924 | 122 | if ((xf_setup->tx_cnt != xf_setup->length) || (xf_setup->rx_cnt != xf_setup->length)){ |
| frank26080115 | 0:bf7b9fba3924 | 123 | /* check if RX FIFO contains data */ |
| frank26080115 | 0:bf7b9fba3924 | 124 | while ((SSP_GetStatus(LPC_SSP0, SSP_STAT_RXFIFO_NOTEMPTY)) && (xf_setup->rx_cnt != xf_setup->length)){ |
| frank26080115 | 0:bf7b9fba3924 | 125 | // Read data from SSP data |
| frank26080115 | 0:bf7b9fba3924 | 126 | tmp = SSP_ReceiveData(LPC_SSP0); |
| frank26080115 | 0:bf7b9fba3924 | 127 | |
| frank26080115 | 0:bf7b9fba3924 | 128 | // Store data to destination |
| frank26080115 | 0:bf7b9fba3924 | 129 | if (xf_setup->rx_data != NULL) |
| frank26080115 | 0:bf7b9fba3924 | 130 | { |
| frank26080115 | 0:bf7b9fba3924 | 131 | if (dataword == 0){ |
| frank26080115 | 0:bf7b9fba3924 | 132 | *(uint8_t *)((uint32_t)xf_setup->rx_data + xf_setup->rx_cnt) = (uint8_t) tmp; |
| frank26080115 | 0:bf7b9fba3924 | 133 | } else { |
| frank26080115 | 0:bf7b9fba3924 | 134 | *(uint16_t *)((uint32_t)xf_setup->rx_data + xf_setup->rx_cnt) = (uint16_t) tmp; |
| frank26080115 | 0:bf7b9fba3924 | 135 | } |
| frank26080115 | 0:bf7b9fba3924 | 136 | } |
| frank26080115 | 0:bf7b9fba3924 | 137 | // Increase counter |
| frank26080115 | 0:bf7b9fba3924 | 138 | if (dataword == 0){ |
| frank26080115 | 0:bf7b9fba3924 | 139 | xf_setup->rx_cnt++; |
| frank26080115 | 0:bf7b9fba3924 | 140 | } else { |
| frank26080115 | 0:bf7b9fba3924 | 141 | xf_setup->rx_cnt += 2; |
| frank26080115 | 0:bf7b9fba3924 | 142 | } |
| frank26080115 | 0:bf7b9fba3924 | 143 | } |
| frank26080115 | 0:bf7b9fba3924 | 144 | |
| frank26080115 | 0:bf7b9fba3924 | 145 | while ((SSP_GetStatus(LPC_SSP0, SSP_STAT_TXFIFO_NOTFULL)) && (xf_setup->tx_cnt != xf_setup->length)){ |
| frank26080115 | 0:bf7b9fba3924 | 146 | // Write data to buffer |
| frank26080115 | 0:bf7b9fba3924 | 147 | if(xf_setup->tx_data == NULL){ |
| frank26080115 | 0:bf7b9fba3924 | 148 | if (dataword == 0){ |
| frank26080115 | 0:bf7b9fba3924 | 149 | SSP_SendData(LPC_SSP0, 0xFF); |
| frank26080115 | 0:bf7b9fba3924 | 150 | xf_setup->tx_cnt++; |
| frank26080115 | 0:bf7b9fba3924 | 151 | } else { |
| frank26080115 | 0:bf7b9fba3924 | 152 | SSP_SendData(LPC_SSP0, 0xFFFF); |
| frank26080115 | 0:bf7b9fba3924 | 153 | xf_setup->tx_cnt += 2; |
| frank26080115 | 0:bf7b9fba3924 | 154 | } |
| frank26080115 | 0:bf7b9fba3924 | 155 | } else { |
| frank26080115 | 0:bf7b9fba3924 | 156 | if (dataword == 0){ |
| frank26080115 | 0:bf7b9fba3924 | 157 | SSP_SendData(LPC_SSP0, (*(uint8_t *)((uint32_t)xf_setup->tx_data + xf_setup->tx_cnt))); |
| frank26080115 | 0:bf7b9fba3924 | 158 | xf_setup->tx_cnt++; |
| frank26080115 | 0:bf7b9fba3924 | 159 | } else { |
| frank26080115 | 0:bf7b9fba3924 | 160 | SSP_SendData(LPC_SSP0, (*(uint16_t *)((uint32_t)xf_setup->tx_data + xf_setup->tx_cnt))); |
| frank26080115 | 0:bf7b9fba3924 | 161 | xf_setup->tx_cnt += 2; |
| frank26080115 | 0:bf7b9fba3924 | 162 | } |
| frank26080115 | 0:bf7b9fba3924 | 163 | } |
| frank26080115 | 0:bf7b9fba3924 | 164 | |
| frank26080115 | 0:bf7b9fba3924 | 165 | // Check overrun error |
| frank26080115 | 0:bf7b9fba3924 | 166 | if (SSP_GetRawIntStatus(LPC_SSP0, SSP_INTSTAT_RAW_ROR)){ |
| frank26080115 | 0:bf7b9fba3924 | 167 | // update status |
| frank26080115 | 0:bf7b9fba3924 | 168 | xf_setup->status |= SSP_STAT_ERROR; |
| frank26080115 | 0:bf7b9fba3924 | 169 | // Set Complete Flag |
| frank26080115 | 0:bf7b9fba3924 | 170 | complete = SET; |
| frank26080115 | 0:bf7b9fba3924 | 171 | return; |
| frank26080115 | 0:bf7b9fba3924 | 172 | } |
| frank26080115 | 0:bf7b9fba3924 | 173 | |
| frank26080115 | 0:bf7b9fba3924 | 174 | // Check for any data available in RX FIFO |
| frank26080115 | 0:bf7b9fba3924 | 175 | while ((SSP_GetStatus(LPC_SSP0, SSP_STAT_RXFIFO_NOTEMPTY)) && (xf_setup->rx_cnt != xf_setup->length)){ |
| frank26080115 | 0:bf7b9fba3924 | 176 | // Read data from SSP data |
| frank26080115 | 0:bf7b9fba3924 | 177 | tmp = SSP_ReceiveData(LPC_SSP0); |
| frank26080115 | 0:bf7b9fba3924 | 178 | |
| frank26080115 | 0:bf7b9fba3924 | 179 | // Store data to destination |
| frank26080115 | 0:bf7b9fba3924 | 180 | if (xf_setup->rx_data != NULL) |
| frank26080115 | 0:bf7b9fba3924 | 181 | { |
| frank26080115 | 0:bf7b9fba3924 | 182 | if (dataword == 0){ |
| frank26080115 | 0:bf7b9fba3924 | 183 | *(uint8_t *)((uint32_t)xf_setup->rx_data + xf_setup->rx_cnt) = (uint8_t) tmp; |
| frank26080115 | 0:bf7b9fba3924 | 184 | } else { |
| frank26080115 | 0:bf7b9fba3924 | 185 | *(uint16_t *)((uint32_t)xf_setup->rx_data + xf_setup->rx_cnt) = (uint16_t) tmp; |
| frank26080115 | 0:bf7b9fba3924 | 186 | } |
| frank26080115 | 0:bf7b9fba3924 | 187 | } |
| frank26080115 | 0:bf7b9fba3924 | 188 | // Increase counter |
| frank26080115 | 0:bf7b9fba3924 | 189 | if (dataword == 0){ |
| frank26080115 | 0:bf7b9fba3924 | 190 | xf_setup->rx_cnt++; |
| frank26080115 | 0:bf7b9fba3924 | 191 | } else { |
| frank26080115 | 0:bf7b9fba3924 | 192 | xf_setup->rx_cnt += 2; |
| frank26080115 | 0:bf7b9fba3924 | 193 | } |
| frank26080115 | 0:bf7b9fba3924 | 194 | } |
| frank26080115 | 0:bf7b9fba3924 | 195 | } |
| frank26080115 | 0:bf7b9fba3924 | 196 | } |
| frank26080115 | 0:bf7b9fba3924 | 197 | |
| frank26080115 | 0:bf7b9fba3924 | 198 | // If there more data to sent or receive |
| frank26080115 | 0:bf7b9fba3924 | 199 | if ((xf_setup->rx_cnt != xf_setup->length) || (xf_setup->tx_cnt != xf_setup->length)){ |
| frank26080115 | 0:bf7b9fba3924 | 200 | // Enable all interrupt |
| frank26080115 | 0:bf7b9fba3924 | 201 | SSP_IntConfig(LPC_SSP0, SSP_INTCFG_ROR|SSP_INTCFG_RT|SSP_INTCFG_RX|SSP_INTCFG_TX, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 202 | } else { |
| frank26080115 | 0:bf7b9fba3924 | 203 | // Save status |
| frank26080115 | 0:bf7b9fba3924 | 204 | xf_setup->status = SSP_STAT_DONE; |
| frank26080115 | 0:bf7b9fba3924 | 205 | // Set Complete Flag |
| frank26080115 | 0:bf7b9fba3924 | 206 | complete = SET; |
| frank26080115 | 0:bf7b9fba3924 | 207 | } |
| frank26080115 | 0:bf7b9fba3924 | 208 | } |
| frank26080115 | 0:bf7b9fba3924 | 209 | |
| frank26080115 | 0:bf7b9fba3924 | 210 | /*-------------------------PRIVATE FUNCTIONS------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 211 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 212 | * @brief Initialize CS pin as GPIO function to drive /CS pin |
| frank26080115 | 0:bf7b9fba3924 | 213 | * due to definition of CS_PORT_NUM and CS_PORT_NUM |
| frank26080115 | 0:bf7b9fba3924 | 214 | * @param None |
| frank26080115 | 0:bf7b9fba3924 | 215 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 216 | ***********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 217 | void CS_Init(void) |
| frank26080115 | 0:bf7b9fba3924 | 218 | { |
| frank26080115 | 0:bf7b9fba3924 | 219 | GPIO_SetDir(CS_PORT_NUM, (1<<CS_PIN_NUM), 1); |
| frank26080115 | 0:bf7b9fba3924 | 220 | GPIO_SetValue(CS_PORT_NUM, (1<<CS_PIN_NUM)); |
| frank26080115 | 0:bf7b9fba3924 | 221 | } |
| frank26080115 | 0:bf7b9fba3924 | 222 | |
| frank26080115 | 0:bf7b9fba3924 | 223 | |
| frank26080115 | 0:bf7b9fba3924 | 224 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 225 | * @brief Drive CS output pin to low/high level to select slave device |
| frank26080115 | 0:bf7b9fba3924 | 226 | * via /CS pin state |
| frank26080115 | 0:bf7b9fba3924 | 227 | * @param[in] state State of CS output pin that will be driven: |
| frank26080115 | 0:bf7b9fba3924 | 228 | * - 0: Drive CS pin to low level |
| frank26080115 | 0:bf7b9fba3924 | 229 | * - 1: Drive CS pin to high level |
| frank26080115 | 0:bf7b9fba3924 | 230 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 231 | ***********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 232 | void CS_Force(int32_t state) |
| frank26080115 | 0:bf7b9fba3924 | 233 | { |
| frank26080115 | 0:bf7b9fba3924 | 234 | if (state){ |
| frank26080115 | 0:bf7b9fba3924 | 235 | GPIO_SetValue(CS_PORT_NUM, (1<<CS_PIN_NUM)); |
| frank26080115 | 0:bf7b9fba3924 | 236 | }else{ |
| frank26080115 | 0:bf7b9fba3924 | 237 | GPIO_ClearValue(CS_PORT_NUM, (1<<CS_PIN_NUM)); |
| frank26080115 | 0:bf7b9fba3924 | 238 | } |
| frank26080115 | 0:bf7b9fba3924 | 239 | } |
| frank26080115 | 0:bf7b9fba3924 | 240 | |
| frank26080115 | 0:bf7b9fba3924 | 241 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 242 | * @brief Print Welcome menu |
| frank26080115 | 0:bf7b9fba3924 | 243 | * @param[in] none |
| frank26080115 | 0:bf7b9fba3924 | 244 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 245 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 246 | void print_menu(void) |
| frank26080115 | 0:bf7b9fba3924 | 247 | { |
| frank26080115 | 0:bf7b9fba3924 | 248 | _DBG(menu1); |
| frank26080115 | 0:bf7b9fba3924 | 249 | } |
| frank26080115 | 0:bf7b9fba3924 | 250 | |
| frank26080115 | 0:bf7b9fba3924 | 251 | /*-------------------------MAIN FUNCTION------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 252 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 253 | * @brief c_entry: Main SSP program body |
| frank26080115 | 0:bf7b9fba3924 | 254 | * @param[in] None |
| frank26080115 | 0:bf7b9fba3924 | 255 | * @return int |
| frank26080115 | 0:bf7b9fba3924 | 256 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 257 | int c_entry(void) |
| frank26080115 | 0:bf7b9fba3924 | 258 | { |
| frank26080115 | 0:bf7b9fba3924 | 259 | uint8_t tmpchar[2] = {0, 0}; |
| frank26080115 | 0:bf7b9fba3924 | 260 | PINSEL_CFG_Type PinCfg; |
| frank26080115 | 0:bf7b9fba3924 | 261 | __IO FlagStatus exitflag; |
| frank26080115 | 0:bf7b9fba3924 | 262 | |
| frank26080115 | 0:bf7b9fba3924 | 263 | /* |
| frank26080115 | 0:bf7b9fba3924 | 264 | * Initialize SPI pin connect |
| frank26080115 | 0:bf7b9fba3924 | 265 | * P0.15 - SCK |
| frank26080115 | 0:bf7b9fba3924 | 266 | * P0.16 - SSEL - used as GPIO |
| frank26080115 | 0:bf7b9fba3924 | 267 | * P0.17 - MISO |
| frank26080115 | 0:bf7b9fba3924 | 268 | * P0.18 - MOSI |
| frank26080115 | 0:bf7b9fba3924 | 269 | */ |
| frank26080115 | 0:bf7b9fba3924 | 270 | PinCfg.Funcnum = 2; |
| frank26080115 | 0:bf7b9fba3924 | 271 | PinCfg.OpenDrain = 0; |
| frank26080115 | 0:bf7b9fba3924 | 272 | PinCfg.Pinmode = 0; |
| frank26080115 | 0:bf7b9fba3924 | 273 | PinCfg.Portnum = 0; |
| frank26080115 | 0:bf7b9fba3924 | 274 | PinCfg.Pinnum = 15; |
| frank26080115 | 0:bf7b9fba3924 | 275 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 276 | PinCfg.Pinnum = 17; |
| frank26080115 | 0:bf7b9fba3924 | 277 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 278 | PinCfg.Pinnum = 18; |
| frank26080115 | 0:bf7b9fba3924 | 279 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 280 | PinCfg.Pinnum = 16; |
| frank26080115 | 0:bf7b9fba3924 | 281 | PinCfg.Funcnum = 0; |
| frank26080115 | 0:bf7b9fba3924 | 282 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 283 | |
| frank26080115 | 0:bf7b9fba3924 | 284 | /* Initialize debug via UART0 |
| frank26080115 | 0:bf7b9fba3924 | 285 | * 115200bps |
| frank26080115 | 0:bf7b9fba3924 | 286 | * 8 data bit |
| frank26080115 | 0:bf7b9fba3924 | 287 | * No parity |
| frank26080115 | 0:bf7b9fba3924 | 288 | * 1 stop bit |
| frank26080115 | 0:bf7b9fba3924 | 289 | * No flow control |
| frank26080115 | 0:bf7b9fba3924 | 290 | */ |
| frank26080115 | 0:bf7b9fba3924 | 291 | debug_frmwrk_init(); |
| frank26080115 | 0:bf7b9fba3924 | 292 | |
| frank26080115 | 0:bf7b9fba3924 | 293 | // print welcome screen |
| frank26080115 | 0:bf7b9fba3924 | 294 | print_menu(); |
| frank26080115 | 0:bf7b9fba3924 | 295 | |
| frank26080115 | 0:bf7b9fba3924 | 296 | // initialize SSP configuration structure to default |
| frank26080115 | 0:bf7b9fba3924 | 297 | SSP_ConfigStructInit(&SSP_ConfigStruct); |
| frank26080115 | 0:bf7b9fba3924 | 298 | // Initialize SSP peripheral with parameter given in structure above |
| frank26080115 | 0:bf7b9fba3924 | 299 | SSP_Init(LPC_SSP0, &SSP_ConfigStruct); |
| frank26080115 | 0:bf7b9fba3924 | 300 | |
| frank26080115 | 0:bf7b9fba3924 | 301 | // Initialize /CS pin to GPIO function |
| frank26080115 | 0:bf7b9fba3924 | 302 | CS_Init(); |
| frank26080115 | 0:bf7b9fba3924 | 303 | |
| frank26080115 | 0:bf7b9fba3924 | 304 | // Enable SSP peripheral |
| frank26080115 | 0:bf7b9fba3924 | 305 | SSP_Cmd(LPC_SSP0, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 306 | |
| frank26080115 | 0:bf7b9fba3924 | 307 | /* preemption = 1, sub-priority = 1 */ |
| frank26080115 | 0:bf7b9fba3924 | 308 | NVIC_SetPriority(SSP0_IRQn, ((0x01<<3)|0x01)); |
| frank26080115 | 0:bf7b9fba3924 | 309 | /* Enable SSP0 interrupt */ |
| frank26080115 | 0:bf7b9fba3924 | 310 | NVIC_EnableIRQ(SSP0_IRQn); |
| frank26080115 | 0:bf7b9fba3924 | 311 | |
| frank26080115 | 0:bf7b9fba3924 | 312 | /* First, send some command to reset SC16IS740 chip via SSP bus interface |
| frank26080115 | 0:bf7b9fba3924 | 313 | * note driver /CS pin to low state before transferring by CS_Enable() function |
| frank26080115 | 0:bf7b9fba3924 | 314 | */ |
| frank26080115 | 0:bf7b9fba3924 | 315 | complete = RESET; |
| frank26080115 | 0:bf7b9fba3924 | 316 | CS_Force(0); |
| frank26080115 | 0:bf7b9fba3924 | 317 | xferConfig.tx_data = iocon_cfg; |
| frank26080115 | 0:bf7b9fba3924 | 318 | xferConfig.rx_data = sspreadbuf; |
| frank26080115 | 0:bf7b9fba3924 | 319 | xferConfig.length = sizeof (iocon_cfg); |
| frank26080115 | 0:bf7b9fba3924 | 320 | SSP_ReadWrite(LPC_SSP0, &xferConfig, SSP_TRANSFER_INTERRUPT); |
| frank26080115 | 0:bf7b9fba3924 | 321 | while (complete == RESET); |
| frank26080115 | 0:bf7b9fba3924 | 322 | CS_Force(1); |
| frank26080115 | 0:bf7b9fba3924 | 323 | |
| frank26080115 | 0:bf7b9fba3924 | 324 | complete = RESET; |
| frank26080115 | 0:bf7b9fba3924 | 325 | CS_Force(0); |
| frank26080115 | 0:bf7b9fba3924 | 326 | xferConfig.tx_data = iodir_cfg; |
| frank26080115 | 0:bf7b9fba3924 | 327 | xferConfig.rx_data = sspreadbuf; |
| frank26080115 | 0:bf7b9fba3924 | 328 | xferConfig.length = sizeof (iodir_cfg); |
| frank26080115 | 0:bf7b9fba3924 | 329 | SSP_ReadWrite(LPC_SSP0, &xferConfig, SSP_TRANSFER_INTERRUPT); |
| frank26080115 | 0:bf7b9fba3924 | 330 | while (complete == RESET); |
| frank26080115 | 0:bf7b9fba3924 | 331 | CS_Force(1); |
| frank26080115 | 0:bf7b9fba3924 | 332 | |
| frank26080115 | 0:bf7b9fba3924 | 333 | // Reset exit flag |
| frank26080115 | 0:bf7b9fba3924 | 334 | exitflag = RESET; |
| frank26080115 | 0:bf7b9fba3924 | 335 | |
| frank26080115 | 0:bf7b9fba3924 | 336 | /* Read some data from the buffer */ |
| frank26080115 | 0:bf7b9fba3924 | 337 | while (exitflag == RESET) |
| frank26080115 | 0:bf7b9fba3924 | 338 | { |
| frank26080115 | 0:bf7b9fba3924 | 339 | while((tmpchar[0] = _DG) == 0); |
| frank26080115 | 0:bf7b9fba3924 | 340 | |
| frank26080115 | 0:bf7b9fba3924 | 341 | if (tmpchar[0] == 27){ |
| frank26080115 | 0:bf7b9fba3924 | 342 | /* ESC key, set exit flag */ |
| frank26080115 | 0:bf7b9fba3924 | 343 | _DBG_(menu2); |
| frank26080115 | 0:bf7b9fba3924 | 344 | exitflag = SET; |
| frank26080115 | 0:bf7b9fba3924 | 345 | } |
| frank26080115 | 0:bf7b9fba3924 | 346 | else if (tmpchar[0] == 'r'){ |
| frank26080115 | 0:bf7b9fba3924 | 347 | print_menu(); |
| frank26080115 | 0:bf7b9fba3924 | 348 | } else { |
| frank26080115 | 0:bf7b9fba3924 | 349 | if (tmpchar[0] == '1') |
| frank26080115 | 0:bf7b9fba3924 | 350 | { |
| frank26080115 | 0:bf7b9fba3924 | 351 | // LEDs are ON now... |
| frank26080115 | 0:bf7b9fba3924 | 352 | CS_Force(0); |
| frank26080115 | 0:bf7b9fba3924 | 353 | xferConfig.tx_data = iostate_on; |
| frank26080115 | 0:bf7b9fba3924 | 354 | xferConfig.rx_data = sspreadbuf; |
| frank26080115 | 0:bf7b9fba3924 | 355 | xferConfig.length = sizeof (iostate_on); |
| frank26080115 | 0:bf7b9fba3924 | 356 | SSP_ReadWrite(LPC_SSP0, &xferConfig, SSP_TRANSFER_POLLING); |
| frank26080115 | 0:bf7b9fba3924 | 357 | CS_Force(1); |
| frank26080115 | 0:bf7b9fba3924 | 358 | } |
| frank26080115 | 0:bf7b9fba3924 | 359 | else if (tmpchar[0] == '2') |
| frank26080115 | 0:bf7b9fba3924 | 360 | { |
| frank26080115 | 0:bf7b9fba3924 | 361 | // LEDs are OFF now... |
| frank26080115 | 0:bf7b9fba3924 | 362 | CS_Force(0); |
| frank26080115 | 0:bf7b9fba3924 | 363 | xferConfig.tx_data = iostate_off; |
| frank26080115 | 0:bf7b9fba3924 | 364 | xferConfig.rx_data = sspreadbuf; |
| frank26080115 | 0:bf7b9fba3924 | 365 | xferConfig.length = sizeof (iostate_off); |
| frank26080115 | 0:bf7b9fba3924 | 366 | SSP_ReadWrite(LPC_SSP0, &xferConfig, SSP_TRANSFER_POLLING); |
| frank26080115 | 0:bf7b9fba3924 | 367 | CS_Force(1); |
| frank26080115 | 0:bf7b9fba3924 | 368 | } |
| frank26080115 | 0:bf7b9fba3924 | 369 | /* Then Echo it back */ |
| frank26080115 | 0:bf7b9fba3924 | 370 | _DBG_(tmpchar); |
| frank26080115 | 0:bf7b9fba3924 | 371 | } |
| frank26080115 | 0:bf7b9fba3924 | 372 | } |
| frank26080115 | 0:bf7b9fba3924 | 373 | |
| frank26080115 | 0:bf7b9fba3924 | 374 | // wait for current transmission complete - THR must be empty |
| frank26080115 | 0:bf7b9fba3924 | 375 | while (UART_CheckBusy(LPC_UART0) == SET ); |
| frank26080115 | 0:bf7b9fba3924 | 376 | |
| frank26080115 | 0:bf7b9fba3924 | 377 | // DeInitialize UART0 peripheral |
| frank26080115 | 0:bf7b9fba3924 | 378 | UART_DeInit(LPC_UART0); |
| frank26080115 | 0:bf7b9fba3924 | 379 | |
| frank26080115 | 0:bf7b9fba3924 | 380 | /* Loop forever */ |
| frank26080115 | 0:bf7b9fba3924 | 381 | while(1); |
| frank26080115 | 0:bf7b9fba3924 | 382 | return 1; |
| frank26080115 | 0:bf7b9fba3924 | 383 | } |
| frank26080115 | 0:bf7b9fba3924 | 384 | |
| frank26080115 | 0:bf7b9fba3924 | 385 | /* With ARM and GHS toolsets, the entry point is main() - this will |
| frank26080115 | 0:bf7b9fba3924 | 386 | allow the linker to generate wrapper code to setup stacks, allocate |
| frank26080115 | 0:bf7b9fba3924 | 387 | heap area, and initialize and copy code and data segments. For GNU |
| frank26080115 | 0:bf7b9fba3924 | 388 | toolsets, the entry point is through __start() in the crt0_gnu.asm |
| frank26080115 | 0:bf7b9fba3924 | 389 | file, and that startup code will setup stacks and data */ |
| frank26080115 | 0:bf7b9fba3924 | 390 | int main(void) |
| frank26080115 | 0:bf7b9fba3924 | 391 | { |
| frank26080115 | 0:bf7b9fba3924 | 392 | return c_entry(); |
| frank26080115 | 0:bf7b9fba3924 | 393 | } |
| frank26080115 | 0:bf7b9fba3924 | 394 | |
| frank26080115 | 0:bf7b9fba3924 | 395 | |
| frank26080115 | 0:bf7b9fba3924 | 396 | #ifdef DEBUG |
| frank26080115 | 0:bf7b9fba3924 | 397 | /******************************************************************************* |
| frank26080115 | 0:bf7b9fba3924 | 398 | * @brief Reports the name of the source file and the source line number |
| frank26080115 | 0:bf7b9fba3924 | 399 | * where the CHECK_PARAM error has occurred. |
| frank26080115 | 0:bf7b9fba3924 | 400 | * @param[in] file Pointer to the source file name |
| frank26080115 | 0:bf7b9fba3924 | 401 | * @param[in] line assert_param error line source number |
| frank26080115 | 0:bf7b9fba3924 | 402 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 403 | *******************************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 404 | void check_failed(uint8_t *file, uint32_t line) |
| frank26080115 | 0:bf7b9fba3924 | 405 | { |
| frank26080115 | 0:bf7b9fba3924 | 406 | /* User can add his own implementation to report the file name and line number, |
| frank26080115 | 0:bf7b9fba3924 | 407 | ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
| frank26080115 | 0:bf7b9fba3924 | 408 | |
| frank26080115 | 0:bf7b9fba3924 | 409 | /* Infinite loop */ |
| frank26080115 | 0:bf7b9fba3924 | 410 | while(1); |
| frank26080115 | 0:bf7b9fba3924 | 411 | } |
| frank26080115 | 0:bf7b9fba3924 | 412 | #endif |
| frank26080115 | 0:bf7b9fba3924 | 413 | |
| frank26080115 | 0:bf7b9fba3924 | 414 | /* |
| frank26080115 | 0:bf7b9fba3924 | 415 | * @} |
| frank26080115 | 0:bf7b9fba3924 | 416 | */ |