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targets/hal/TARGET_RENESAS/TARGET_RZ_A1H/serial_api.c@445:9a3ffe6cfa19, 2015-01-14 (annotated)
- Committer:
- moirans2
- Date:
- Wed Jan 14 20:53:08 2015 +0000
- Revision:
- 445:9a3ffe6cfa19
- Parent:
- 441:d2c15dda23c1
internal clock stm32L051
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 390:35c2c1cf29cd | 1 | /* mbed Microcontroller Library |
mbed_official | 390:35c2c1cf29cd | 2 | * Copyright (c) 2006-2013 ARM Limited |
mbed_official | 390:35c2c1cf29cd | 3 | * |
mbed_official | 390:35c2c1cf29cd | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
mbed_official | 390:35c2c1cf29cd | 5 | * you may not use this file except in compliance with the License. |
mbed_official | 390:35c2c1cf29cd | 6 | * You may obtain a copy of the License at |
mbed_official | 390:35c2c1cf29cd | 7 | * |
mbed_official | 390:35c2c1cf29cd | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
mbed_official | 390:35c2c1cf29cd | 9 | * |
mbed_official | 390:35c2c1cf29cd | 10 | * Unless required by applicable law or agreed to in writing, software |
mbed_official | 390:35c2c1cf29cd | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
mbed_official | 390:35c2c1cf29cd | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
mbed_official | 390:35c2c1cf29cd | 13 | * See the License for the specific language governing permissions and |
mbed_official | 390:35c2c1cf29cd | 14 | * limitations under the License. |
mbed_official | 390:35c2c1cf29cd | 15 | */ |
mbed_official | 390:35c2c1cf29cd | 16 | // math.h required for floating point operations for baud rate calculation |
mbed_official | 390:35c2c1cf29cd | 17 | #include "mbed_assert.h" |
mbed_official | 390:35c2c1cf29cd | 18 | #include <math.h> |
mbed_official | 390:35c2c1cf29cd | 19 | #include <string.h> |
mbed_official | 390:35c2c1cf29cd | 20 | #include <stdlib.h> |
mbed_official | 390:35c2c1cf29cd | 21 | |
mbed_official | 390:35c2c1cf29cd | 22 | #include "serial_api.h" |
mbed_official | 390:35c2c1cf29cd | 23 | #include "cmsis.h" |
mbed_official | 390:35c2c1cf29cd | 24 | #include "pinmap.h" |
mbed_official | 390:35c2c1cf29cd | 25 | #include "gpio_api.h" |
mbed_official | 390:35c2c1cf29cd | 26 | |
mbed_official | 390:35c2c1cf29cd | 27 | #include "scif_iodefine.h" |
mbed_official | 390:35c2c1cf29cd | 28 | #include "cpg_iodefine.h" |
mbed_official | 390:35c2c1cf29cd | 29 | |
mbed_official | 390:35c2c1cf29cd | 30 | /****************************************************************************** |
mbed_official | 390:35c2c1cf29cd | 31 | * INITIALIZATION |
mbed_official | 390:35c2c1cf29cd | 32 | ******************************************************************************/ |
mbed_official | 437:0b72c0f86db6 | 33 | #define UART_NUM 8 |
mbed_official | 437:0b72c0f86db6 | 34 | #define IRQ_NUM 2 |
mbed_official | 437:0b72c0f86db6 | 35 | |
mbed_official | 437:0b72c0f86db6 | 36 | static void uart0_tx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 37 | static void uart1_tx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 38 | static void uart2_tx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 39 | static void uart3_tx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 40 | static void uart4_tx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 41 | static void uart5_tx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 42 | static void uart6_tx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 43 | static void uart7_tx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 44 | static void uart0_rx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 45 | static void uart1_rx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 46 | static void uart2_rx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 47 | static void uart3_rx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 48 | static void uart4_rx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 49 | static void uart5_rx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 50 | static void uart6_rx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 51 | static void uart7_rx_irq(void); |
mbed_official | 437:0b72c0f86db6 | 52 | |
mbed_official | 390:35c2c1cf29cd | 53 | |
mbed_official | 390:35c2c1cf29cd | 54 | static const PinMap PinMap_UART_TX[] = { |
mbed_official | 441:d2c15dda23c1 | 55 | {P6_3 , UART2, 7}, |
mbed_official | 441:d2c15dda23c1 | 56 | {P2_14 , UART0, 6}, |
mbed_official | 441:d2c15dda23c1 | 57 | {P5_0 , UART4, 5}, |
mbed_official | 441:d2c15dda23c1 | 58 | {P5_3 , UART3, 5}, |
mbed_official | 441:d2c15dda23c1 | 59 | {P5_6 , UART6, 5}, |
mbed_official | 441:d2c15dda23c1 | 60 | {P2_5 , UART1, 6}, |
mbed_official | 441:d2c15dda23c1 | 61 | {P8_14 , UART4, 7}, |
mbed_official | 441:d2c15dda23c1 | 62 | {P8_13 , UART5, 5}, |
mbed_official | 441:d2c15dda23c1 | 63 | {P7_4 , UART7, 4}, |
mbed_official | 441:d2c15dda23c1 | 64 | {P11_10, UART5, 3}, |
mbed_official | 441:d2c15dda23c1 | 65 | {P6_6 , UART5, 5}, |
mbed_official | 441:d2c15dda23c1 | 66 | {NC , NC , 0} |
mbed_official | 390:35c2c1cf29cd | 67 | }; |
mbed_official | 390:35c2c1cf29cd | 68 | |
mbed_official | 390:35c2c1cf29cd | 69 | static const PinMap PinMap_UART_RX[] = { |
mbed_official | 441:d2c15dda23c1 | 70 | {P6_2 , UART2, 7}, |
mbed_official | 441:d2c15dda23c1 | 71 | {P2_15 , UART0, 6}, |
mbed_official | 441:d2c15dda23c1 | 72 | {P5_1 , UART4, 5}, |
mbed_official | 441:d2c15dda23c1 | 73 | {P5_4 , UART3, 5}, |
mbed_official | 441:d2c15dda23c1 | 74 | {P5_7 , UART6, 5}, |
mbed_official | 441:d2c15dda23c1 | 75 | {P2_6 , UART1, 6}, |
mbed_official | 441:d2c15dda23c1 | 76 | {P8_15 , UART4, 7}, |
mbed_official | 441:d2c15dda23c1 | 77 | {P8_11 , UART5, 5}, |
mbed_official | 441:d2c15dda23c1 | 78 | {P7_5 , UART7, 4}, |
mbed_official | 441:d2c15dda23c1 | 79 | {P11_11, UART5, 3}, |
mbed_official | 441:d2c15dda23c1 | 80 | {P6_7 , UART5, 5}, |
mbed_official | 441:d2c15dda23c1 | 81 | {NC , NC , 0} |
mbed_official | 390:35c2c1cf29cd | 82 | }; |
mbed_official | 390:35c2c1cf29cd | 83 | |
mbed_official | 441:d2c15dda23c1 | 84 | static const struct st_scif *SCIF[] = SCIF_ADDRESS_LIST; |
mbed_official | 390:35c2c1cf29cd | 85 | static uart_irq_handler irq_handler; |
mbed_official | 390:35c2c1cf29cd | 86 | |
mbed_official | 390:35c2c1cf29cd | 87 | int stdio_uart_inited = 0; |
mbed_official | 390:35c2c1cf29cd | 88 | serial_t stdio_uart; |
mbed_official | 390:35c2c1cf29cd | 89 | |
mbed_official | 390:35c2c1cf29cd | 90 | struct serial_global_data_s { |
mbed_official | 390:35c2c1cf29cd | 91 | uint32_t serial_irq_id; |
mbed_official | 390:35c2c1cf29cd | 92 | gpio_t sw_rts, sw_cts; |
mbed_official | 390:35c2c1cf29cd | 93 | uint8_t count, rx_irq_set_flow, rx_irq_set_api; |
mbed_official | 390:35c2c1cf29cd | 94 | }; |
mbed_official | 390:35c2c1cf29cd | 95 | |
mbed_official | 390:35c2c1cf29cd | 96 | static struct serial_global_data_s uart_data[UART_NUM]; |
mbed_official | 390:35c2c1cf29cd | 97 | |
mbed_official | 437:0b72c0f86db6 | 98 | static const IRQn_Type irq_set_tbl[UART_NUM][IRQ_NUM] = { |
mbed_official | 437:0b72c0f86db6 | 99 | {SCIFRXI0_IRQn, SCIFTXI0_IRQn}, |
mbed_official | 437:0b72c0f86db6 | 100 | {SCIFRXI1_IRQn, SCIFTXI1_IRQn}, |
mbed_official | 437:0b72c0f86db6 | 101 | {SCIFRXI2_IRQn, SCIFTXI2_IRQn}, |
mbed_official | 437:0b72c0f86db6 | 102 | {SCIFRXI3_IRQn, SCIFTXI3_IRQn}, |
mbed_official | 437:0b72c0f86db6 | 103 | {SCIFRXI4_IRQn, SCIFTXI4_IRQn}, |
mbed_official | 437:0b72c0f86db6 | 104 | {SCIFRXI5_IRQn, SCIFTXI5_IRQn}, |
mbed_official | 437:0b72c0f86db6 | 105 | {SCIFRXI6_IRQn, SCIFTXI6_IRQn}, |
mbed_official | 437:0b72c0f86db6 | 106 | {SCIFRXI7_IRQn, SCIFTXI7_IRQn} |
mbed_official | 437:0b72c0f86db6 | 107 | }; |
mbed_official | 437:0b72c0f86db6 | 108 | |
mbed_official | 437:0b72c0f86db6 | 109 | static const IRQHandler hander_set_tbl[UART_NUM][IRQ_NUM] = { |
mbed_official | 437:0b72c0f86db6 | 110 | {uart0_rx_irq, uart0_tx_irq}, |
mbed_official | 437:0b72c0f86db6 | 111 | {uart1_rx_irq, uart1_tx_irq}, |
mbed_official | 437:0b72c0f86db6 | 112 | {uart2_rx_irq, uart2_tx_irq}, |
mbed_official | 437:0b72c0f86db6 | 113 | {uart3_rx_irq, uart3_tx_irq}, |
mbed_official | 437:0b72c0f86db6 | 114 | {uart4_rx_irq, uart4_tx_irq}, |
mbed_official | 437:0b72c0f86db6 | 115 | {uart5_rx_irq, uart5_tx_irq}, |
mbed_official | 437:0b72c0f86db6 | 116 | {uart6_rx_irq, uart6_tx_irq}, |
mbed_official | 437:0b72c0f86db6 | 117 | {uart7_rx_irq, uart7_tx_irq} |
mbed_official | 437:0b72c0f86db6 | 118 | }; |
mbed_official | 437:0b72c0f86db6 | 119 | |
mbed_official | 437:0b72c0f86db6 | 120 | static __IO uint16_t *SCSCR_MATCH[] = { |
mbed_official | 437:0b72c0f86db6 | 121 | &SCSCR_0, |
mbed_official | 437:0b72c0f86db6 | 122 | &SCSCR_1, |
mbed_official | 437:0b72c0f86db6 | 123 | &SCSCR_2, |
mbed_official | 437:0b72c0f86db6 | 124 | &SCSCR_3, |
mbed_official | 437:0b72c0f86db6 | 125 | &SCSCR_4, |
mbed_official | 437:0b72c0f86db6 | 126 | &SCSCR_5, |
mbed_official | 437:0b72c0f86db6 | 127 | &SCSCR_6, |
mbed_official | 437:0b72c0f86db6 | 128 | &SCSCR_7, |
mbed_official | 437:0b72c0f86db6 | 129 | }; |
mbed_official | 437:0b72c0f86db6 | 130 | |
mbed_official | 437:0b72c0f86db6 | 131 | static __IO uint16_t *SCFSR_MATCH[] = { |
mbed_official | 437:0b72c0f86db6 | 132 | &SCFSR_0, |
mbed_official | 437:0b72c0f86db6 | 133 | &SCFSR_1, |
mbed_official | 437:0b72c0f86db6 | 134 | &SCFSR_2, |
mbed_official | 437:0b72c0f86db6 | 135 | &SCFSR_3, |
mbed_official | 437:0b72c0f86db6 | 136 | &SCFSR_4, |
mbed_official | 437:0b72c0f86db6 | 137 | &SCFSR_5, |
mbed_official | 437:0b72c0f86db6 | 138 | &SCFSR_6, |
mbed_official | 437:0b72c0f86db6 | 139 | &SCFSR_7, |
mbed_official | 437:0b72c0f86db6 | 140 | }; |
mbed_official | 437:0b72c0f86db6 | 141 | |
mbed_official | 437:0b72c0f86db6 | 142 | |
mbed_official | 390:35c2c1cf29cd | 143 | void serial_init(serial_t *obj, PinName tx, PinName rx) { |
mbed_official | 441:d2c15dda23c1 | 144 | volatile uint8_t dummy ; |
mbed_official | 390:35c2c1cf29cd | 145 | int is_stdio_uart = 0; |
mbed_official | 390:35c2c1cf29cd | 146 | // determine the UART to use |
mbed_official | 390:35c2c1cf29cd | 147 | uint32_t uart_tx = pinmap_peripheral(tx, PinMap_UART_TX); |
mbed_official | 390:35c2c1cf29cd | 148 | uint32_t uart_rx = pinmap_peripheral(rx, PinMap_UART_RX); |
mbed_official | 390:35c2c1cf29cd | 149 | uint32_t uart = pinmap_merge(uart_tx, uart_rx); |
mbed_official | 441:d2c15dda23c1 | 150 | |
mbed_official | 390:35c2c1cf29cd | 151 | MBED_ASSERT((int)uart != NC); |
mbed_official | 390:35c2c1cf29cd | 152 | |
mbed_official | 441:d2c15dda23c1 | 153 | obj->uart = (struct st_scif *)SCIF[uart]; |
mbed_official | 390:35c2c1cf29cd | 154 | // enable power |
mbed_official | 390:35c2c1cf29cd | 155 | switch (uart) { |
mbed_official | 441:d2c15dda23c1 | 156 | case UART0: CPG.STBCR4 &= ~(1 << 7); break; |
mbed_official | 441:d2c15dda23c1 | 157 | case UART1: CPG.STBCR4 &= ~(1 << 6); break; |
mbed_official | 441:d2c15dda23c1 | 158 | case UART2: CPG.STBCR4 &= ~(1 << 5); break; |
mbed_official | 441:d2c15dda23c1 | 159 | case UART3: CPG.STBCR4 &= ~(1 << 4); break; |
mbed_official | 441:d2c15dda23c1 | 160 | case UART4: CPG.STBCR4 &= ~(1 << 3); break; |
mbed_official | 441:d2c15dda23c1 | 161 | case UART5: CPG.STBCR4 &= ~(1 << 2); break; |
mbed_official | 441:d2c15dda23c1 | 162 | case UART6: CPG.STBCR4 &= ~(1 << 1); break; |
mbed_official | 441:d2c15dda23c1 | 163 | case UART7: CPG.STBCR4 &= ~(1 << 0); break; |
mbed_official | 390:35c2c1cf29cd | 164 | } |
mbed_official | 390:35c2c1cf29cd | 165 | dummy = CPG.STBCR4; |
mbed_official | 390:35c2c1cf29cd | 166 | |
mbed_official | 390:35c2c1cf29cd | 167 | /* ==== SCIF initial setting ==== */ |
mbed_official | 390:35c2c1cf29cd | 168 | /* ---- Serial control register (SCSCR) setting ---- */ |
mbed_official | 390:35c2c1cf29cd | 169 | /* B'00 : Internal CLK */ |
mbed_official | 390:35c2c1cf29cd | 170 | obj->uart->SCSCR = 0x0000u; /* SCIF transmitting and receiving operations stop */ |
mbed_official | 390:35c2c1cf29cd | 171 | |
mbed_official | 390:35c2c1cf29cd | 172 | /* ---- FIFO control register (SCFCR) setting ---- */ |
mbed_official | 390:35c2c1cf29cd | 173 | /* Transmit FIFO reset & Receive FIFO data register reset */ |
mbed_official | 390:35c2c1cf29cd | 174 | obj->uart->SCFCR = 0x0006; |
mbed_official | 390:35c2c1cf29cd | 175 | |
mbed_official | 390:35c2c1cf29cd | 176 | /* ---- Serial status register (SCFSR) setting ---- */ |
mbed_official | 437:0b72c0f86db6 | 177 | dummy = obj->uart->SCFSR; |
mbed_official | 437:0b72c0f86db6 | 178 | obj->uart->SCFSR = (dummy & 0xFF6Cu); /* ER,BRK,DR bit clear */ |
mbed_official | 390:35c2c1cf29cd | 179 | |
mbed_official | 390:35c2c1cf29cd | 180 | /* ---- Line status register (SCLSR) setting ---- */ |
mbed_official | 390:35c2c1cf29cd | 181 | /* ORER bit clear */ |
mbed_official | 390:35c2c1cf29cd | 182 | obj->uart->SCLSR = 0; |
mbed_official | 390:35c2c1cf29cd | 183 | |
mbed_official | 390:35c2c1cf29cd | 184 | /* ---- Serial extension mode register (SCEMR) setting ---- |
mbed_official | 390:35c2c1cf29cd | 185 | b7 BGDM - Baud rate generator double-speed mode : Normal mode |
mbed_official | 390:35c2c1cf29cd | 186 | b0 ABCS - Base clock select in asynchronous mode : Base clock is 16 times the bit rate */ |
mbed_official | 390:35c2c1cf29cd | 187 | obj->uart->SCEMR = 0x0000u; |
mbed_official | 390:35c2c1cf29cd | 188 | |
mbed_official | 390:35c2c1cf29cd | 189 | /* ---- Bit rate register (SCBRR) setting ---- */ |
mbed_official | 390:35c2c1cf29cd | 190 | serial_baud (obj, 9600); |
mbed_official | 390:35c2c1cf29cd | 191 | serial_format(obj, 8, ParityNone, 1); |
mbed_official | 390:35c2c1cf29cd | 192 | |
mbed_official | 390:35c2c1cf29cd | 193 | /* ---- FIFO control register (SCFCR) setting ---- */ |
mbed_official | 390:35c2c1cf29cd | 194 | obj->uart->SCFCR = 0x0030u; |
mbed_official | 441:d2c15dda23c1 | 195 | |
mbed_official | 390:35c2c1cf29cd | 196 | /* ---- Serial port register (SCSPTR) setting ---- |
mbed_official | 390:35c2c1cf29cd | 197 | b1 SPB2IO - Serial port break output : disabled |
mbed_official | 390:35c2c1cf29cd | 198 | b0 SPB2DT - Serial port break data : High-level */ |
mbed_official | 390:35c2c1cf29cd | 199 | //obj->uart->SCSPTR |= 0x0000u; |
mbed_official | 390:35c2c1cf29cd | 200 | |
mbed_official | 409:a95c696104d3 | 201 | obj->uart->SCSCR = 0x00F0; |
mbed_official | 390:35c2c1cf29cd | 202 | |
mbed_official | 390:35c2c1cf29cd | 203 | // pinout the chosen uart |
mbed_official | 390:35c2c1cf29cd | 204 | pinmap_pinout(tx, PinMap_UART_TX); |
mbed_official | 390:35c2c1cf29cd | 205 | pinmap_pinout(rx, PinMap_UART_RX); |
mbed_official | 390:35c2c1cf29cd | 206 | |
mbed_official | 390:35c2c1cf29cd | 207 | switch (uart) { |
mbed_official | 441:d2c15dda23c1 | 208 | case UART0: obj->index = 0; break; |
mbed_official | 441:d2c15dda23c1 | 209 | case UART1: obj->index = 1; break; |
mbed_official | 441:d2c15dda23c1 | 210 | case UART2: obj->index = 2; break; |
mbed_official | 441:d2c15dda23c1 | 211 | case UART3: obj->index = 3; break; |
mbed_official | 441:d2c15dda23c1 | 212 | case UART4: obj->index = 4; break; |
mbed_official | 441:d2c15dda23c1 | 213 | case UART5: obj->index = 5; break; |
mbed_official | 441:d2c15dda23c1 | 214 | case UART6: obj->index = 6; break; |
mbed_official | 441:d2c15dda23c1 | 215 | case UART7: obj->index = 7; break; |
mbed_official | 390:35c2c1cf29cd | 216 | } |
mbed_official | 390:35c2c1cf29cd | 217 | uart_data[obj->index].sw_rts.pin = NC; |
mbed_official | 390:35c2c1cf29cd | 218 | uart_data[obj->index].sw_cts.pin = NC; |
mbed_official | 390:35c2c1cf29cd | 219 | |
mbed_official | 390:35c2c1cf29cd | 220 | is_stdio_uart = (uart == STDIO_UART) ? (1) : (0); |
mbed_official | 390:35c2c1cf29cd | 221 | |
mbed_official | 390:35c2c1cf29cd | 222 | if (is_stdio_uart) { |
mbed_official | 390:35c2c1cf29cd | 223 | stdio_uart_inited = 1; |
mbed_official | 390:35c2c1cf29cd | 224 | memcpy(&stdio_uart, obj, sizeof(serial_t)); |
mbed_official | 390:35c2c1cf29cd | 225 | } |
mbed_official | 390:35c2c1cf29cd | 226 | } |
mbed_official | 390:35c2c1cf29cd | 227 | |
mbed_official | 390:35c2c1cf29cd | 228 | void serial_free(serial_t *obj) { |
mbed_official | 390:35c2c1cf29cd | 229 | uart_data[obj->index].serial_irq_id = 0; |
mbed_official | 390:35c2c1cf29cd | 230 | } |
mbed_official | 390:35c2c1cf29cd | 231 | |
mbed_official | 390:35c2c1cf29cd | 232 | // serial_baud |
mbed_official | 390:35c2c1cf29cd | 233 | // set the baud rate, taking in to account the current SystemFrequency |
mbed_official | 390:35c2c1cf29cd | 234 | void serial_baud(serial_t *obj, int baudrate) { |
mbed_official | 390:35c2c1cf29cd | 235 | |
mbed_official | 390:35c2c1cf29cd | 236 | uint32_t PCLK = 66666666; |
mbed_official | 390:35c2c1cf29cd | 237 | |
mbed_official | 390:35c2c1cf29cd | 238 | uint16_t DL = (PCLK / (32 * baudrate)) -1; |
mbed_official | 390:35c2c1cf29cd | 239 | |
mbed_official | 390:35c2c1cf29cd | 240 | // set LCR[DLAB] to enable writing to divider registers |
mbed_official | 390:35c2c1cf29cd | 241 | obj->uart->SCBRR = DL; |
mbed_official | 390:35c2c1cf29cd | 242 | } |
mbed_official | 390:35c2c1cf29cd | 243 | |
mbed_official | 390:35c2c1cf29cd | 244 | void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) { |
mbed_official | 441:d2c15dda23c1 | 245 | int parity_enable; |
mbed_official | 441:d2c15dda23c1 | 246 | int parity_select; |
mbed_official | 441:d2c15dda23c1 | 247 | |
mbed_official | 390:35c2c1cf29cd | 248 | MBED_ASSERT((stop_bits == 1) || (stop_bits == 2)); // 0: 1 stop bits, 1: 2 stop bits |
mbed_official | 390:35c2c1cf29cd | 249 | MBED_ASSERT((data_bits > 6) && (data_bits < 9)); // 0: 5 data bits ... 3: 8 data bits |
mbed_official | 390:35c2c1cf29cd | 250 | MBED_ASSERT((parity == ParityNone) || (parity == ParityOdd) || (parity == ParityEven) || |
mbed_official | 390:35c2c1cf29cd | 251 | (parity == ParityForced1) || (parity == ParityForced0)); |
mbed_official | 390:35c2c1cf29cd | 252 | |
mbed_official | 390:35c2c1cf29cd | 253 | stop_bits = (stop_bits == 1)? 0: |
mbed_official | 390:35c2c1cf29cd | 254 | (stop_bits == 2)? 1: |
mbed_official | 390:35c2c1cf29cd | 255 | 0; // must not to be |
mbed_official | 390:35c2c1cf29cd | 256 | |
mbed_official | 390:35c2c1cf29cd | 257 | data_bits = (data_bits == 8)? 0: |
mbed_official | 390:35c2c1cf29cd | 258 | (data_bits == 7)? 1: |
mbed_official | 390:35c2c1cf29cd | 259 | 0; // must not to be |
mbed_official | 390:35c2c1cf29cd | 260 | |
mbed_official | 390:35c2c1cf29cd | 261 | switch (parity) { |
mbed_official | 441:d2c15dda23c1 | 262 | case ParityNone: |
mbed_official | 441:d2c15dda23c1 | 263 | parity_enable = 0; |
mbed_official | 441:d2c15dda23c1 | 264 | parity_select = 0; |
mbed_official | 441:d2c15dda23c1 | 265 | break; |
mbed_official | 441:d2c15dda23c1 | 266 | case ParityOdd: |
mbed_official | 441:d2c15dda23c1 | 267 | parity_enable = 1; |
mbed_official | 441:d2c15dda23c1 | 268 | parity_select = 0; |
mbed_official | 441:d2c15dda23c1 | 269 | break; |
mbed_official | 441:d2c15dda23c1 | 270 | case ParityEven: |
mbed_official | 441:d2c15dda23c1 | 271 | parity_enable = 1; |
mbed_official | 441:d2c15dda23c1 | 272 | parity_select = 1; |
mbed_official | 441:d2c15dda23c1 | 273 | break; |
mbed_official | 390:35c2c1cf29cd | 274 | default: |
mbed_official | 441:d2c15dda23c1 | 275 | parity_enable = 0; |
mbed_official | 441:d2c15dda23c1 | 276 | parity_select = 0; |
mbed_official | 390:35c2c1cf29cd | 277 | break; |
mbed_official | 390:35c2c1cf29cd | 278 | } |
mbed_official | 390:35c2c1cf29cd | 279 | |
mbed_official | 390:35c2c1cf29cd | 280 | obj->uart->SCSMR = data_bits << 6 |
mbed_official | 390:35c2c1cf29cd | 281 | | parity_enable << 5 |
mbed_official | 390:35c2c1cf29cd | 282 | | parity_select << 4 |
mbed_official | 390:35c2c1cf29cd | 283 | | stop_bits << 3; |
mbed_official | 390:35c2c1cf29cd | 284 | } |
mbed_official | 390:35c2c1cf29cd | 285 | |
mbed_official | 390:35c2c1cf29cd | 286 | /****************************************************************************** |
mbed_official | 390:35c2c1cf29cd | 287 | * INTERRUPTS HANDLING |
mbed_official | 390:35c2c1cf29cd | 288 | ******************************************************************************/ |
mbed_official | 390:35c2c1cf29cd | 289 | |
mbed_official | 409:a95c696104d3 | 290 | static void uart_tx_irq(IRQn_Type irq_num, uint32_t index) { |
mbed_official | 437:0b72c0f86db6 | 291 | __IO uint16_t *dmy_rd_scscr; |
mbed_official | 437:0b72c0f86db6 | 292 | __IO uint16_t *dmy_rd_scfsr; |
mbed_official | 441:d2c15dda23c1 | 293 | |
mbed_official | 437:0b72c0f86db6 | 294 | dmy_rd_scscr = SCSCR_MATCH[index]; |
mbed_official | 437:0b72c0f86db6 | 295 | *dmy_rd_scscr &= 0x007B; // Clear TIE and Write to bit15~8,2 is always 0 |
mbed_official | 437:0b72c0f86db6 | 296 | dmy_rd_scfsr = SCFSR_MATCH[index]; |
mbed_official | 437:0b72c0f86db6 | 297 | *dmy_rd_scfsr = (*dmy_rd_scfsr & ~0x0020); // Clear TDFE |
mbed_official | 441:d2c15dda23c1 | 298 | |
mbed_official | 409:a95c696104d3 | 299 | irq_handler(uart_data[index].serial_irq_id, TxIrq); |
mbed_official | 409:a95c696104d3 | 300 | } |
mbed_official | 409:a95c696104d3 | 301 | |
mbed_official | 409:a95c696104d3 | 302 | static void uart_rx_irq(IRQn_Type irq_num, uint32_t index) { |
mbed_official | 437:0b72c0f86db6 | 303 | __IO uint16_t *dmy_rd_scscr; |
mbed_official | 437:0b72c0f86db6 | 304 | __IO uint16_t *dmy_rd_scfsr; |
mbed_official | 441:d2c15dda23c1 | 305 | |
mbed_official | 437:0b72c0f86db6 | 306 | dmy_rd_scscr = SCSCR_MATCH[index]; |
mbed_official | 437:0b72c0f86db6 | 307 | *dmy_rd_scscr &= 0x00B3; // Clear RIE,REIE and Write to bit15~8,2 is always 0 |
mbed_official | 437:0b72c0f86db6 | 308 | dmy_rd_scfsr = SCFSR_MATCH[index]; |
mbed_official | 437:0b72c0f86db6 | 309 | *dmy_rd_scfsr = (*dmy_rd_scfsr & ~0x0003); // Clear RDF,DR |
mbed_official | 437:0b72c0f86db6 | 310 | |
mbed_official | 409:a95c696104d3 | 311 | irq_handler(uart_data[index].serial_irq_id, RxIrq); |
mbed_official | 409:a95c696104d3 | 312 | } |
mbed_official | 437:0b72c0f86db6 | 313 | |
mbed_official | 409:a95c696104d3 | 314 | /* TX handler */ |
mbed_official | 437:0b72c0f86db6 | 315 | static void uart0_tx_irq(void) {uart_tx_irq(SCIFTXI0_IRQn, 0);} |
mbed_official | 437:0b72c0f86db6 | 316 | static void uart1_tx_irq(void) {uart_tx_irq(SCIFTXI1_IRQn, 1);} |
mbed_official | 437:0b72c0f86db6 | 317 | static void uart2_tx_irq(void) {uart_tx_irq(SCIFTXI2_IRQn, 2);} |
mbed_official | 437:0b72c0f86db6 | 318 | static void uart3_tx_irq(void) {uart_tx_irq(SCIFTXI3_IRQn, 3);} |
mbed_official | 437:0b72c0f86db6 | 319 | static void uart4_tx_irq(void) {uart_tx_irq(SCIFTXI4_IRQn, 4);} |
mbed_official | 437:0b72c0f86db6 | 320 | static void uart5_tx_irq(void) {uart_tx_irq(SCIFTXI5_IRQn, 5);} |
mbed_official | 437:0b72c0f86db6 | 321 | static void uart6_tx_irq(void) {uart_tx_irq(SCIFTXI6_IRQn, 6);} |
mbed_official | 437:0b72c0f86db6 | 322 | static void uart7_tx_irq(void) {uart_tx_irq(SCIFTXI7_IRQn, 7);} |
mbed_official | 409:a95c696104d3 | 323 | /* RX handler */ |
mbed_official | 437:0b72c0f86db6 | 324 | static void uart0_rx_irq(void) {uart_rx_irq(SCIFRXI0_IRQn, 0);} |
mbed_official | 437:0b72c0f86db6 | 325 | static void uart1_rx_irq(void) {uart_rx_irq(SCIFRXI1_IRQn, 1);} |
mbed_official | 437:0b72c0f86db6 | 326 | static void uart2_rx_irq(void) {uart_rx_irq(SCIFRXI2_IRQn, 2);} |
mbed_official | 437:0b72c0f86db6 | 327 | static void uart3_rx_irq(void) {uart_rx_irq(SCIFRXI3_IRQn, 3);} |
mbed_official | 437:0b72c0f86db6 | 328 | static void uart4_rx_irq(void) {uart_rx_irq(SCIFRXI4_IRQn, 4);} |
mbed_official | 437:0b72c0f86db6 | 329 | static void uart5_rx_irq(void) {uart_rx_irq(SCIFRXI5_IRQn, 5);} |
mbed_official | 437:0b72c0f86db6 | 330 | static void uart6_rx_irq(void) {uart_rx_irq(SCIFRXI6_IRQn, 6);} |
mbed_official | 437:0b72c0f86db6 | 331 | static void uart7_rx_irq(void) {uart_rx_irq(SCIFRXI7_IRQn, 7);} |
mbed_official | 390:35c2c1cf29cd | 332 | |
mbed_official | 390:35c2c1cf29cd | 333 | void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) { |
mbed_official | 390:35c2c1cf29cd | 334 | irq_handler = handler; |
mbed_official | 390:35c2c1cf29cd | 335 | uart_data[obj->index].serial_irq_id = id; |
mbed_official | 390:35c2c1cf29cd | 336 | } |
mbed_official | 390:35c2c1cf29cd | 337 | |
mbed_official | 390:35c2c1cf29cd | 338 | static void serial_irq_set_internal(serial_t *obj, SerialIrq irq, uint32_t enable) { |
mbed_official | 437:0b72c0f86db6 | 339 | IRQn_Type IRQn; |
mbed_official | 437:0b72c0f86db6 | 340 | IRQHandler handler; |
mbed_official | 437:0b72c0f86db6 | 341 | |
mbed_official | 437:0b72c0f86db6 | 342 | IRQn = irq_set_tbl[obj->index][irq]; |
mbed_official | 437:0b72c0f86db6 | 343 | handler = hander_set_tbl[obj->index][irq]; |
mbed_official | 437:0b72c0f86db6 | 344 | |
mbed_official | 437:0b72c0f86db6 | 345 | if ((obj->index >= 0) && (obj->index <= 7)) { |
mbed_official | 437:0b72c0f86db6 | 346 | if (enable) { |
mbed_official | 437:0b72c0f86db6 | 347 | InterruptHandlerRegister(IRQn, (void (*)(uint32_t))handler); |
mbed_official | 437:0b72c0f86db6 | 348 | GIC_SetPriority(IRQn, 5); |
mbed_official | 437:0b72c0f86db6 | 349 | GIC_EnableIRQ(IRQn); |
mbed_official | 437:0b72c0f86db6 | 350 | } else { |
mbed_official | 437:0b72c0f86db6 | 351 | GIC_DisableIRQ(IRQn); |
mbed_official | 437:0b72c0f86db6 | 352 | } |
mbed_official | 390:35c2c1cf29cd | 353 | } |
mbed_official | 390:35c2c1cf29cd | 354 | } |
mbed_official | 390:35c2c1cf29cd | 355 | |
mbed_official | 390:35c2c1cf29cd | 356 | void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) { |
mbed_official | 441:d2c15dda23c1 | 357 | if (RxIrq == irq) { |
mbed_official | 390:35c2c1cf29cd | 358 | uart_data[obj->index].rx_irq_set_api = enable; |
mbed_official | 441:d2c15dda23c1 | 359 | } |
mbed_official | 390:35c2c1cf29cd | 360 | serial_irq_set_internal(obj, irq, enable); |
mbed_official | 390:35c2c1cf29cd | 361 | } |
mbed_official | 390:35c2c1cf29cd | 362 | |
mbed_official | 390:35c2c1cf29cd | 363 | static void serial_flow_irq_set(serial_t *obj, uint32_t enable) { |
mbed_official | 390:35c2c1cf29cd | 364 | uart_data[obj->index].rx_irq_set_flow = enable; |
mbed_official | 390:35c2c1cf29cd | 365 | serial_irq_set_internal(obj, RxIrq, enable); |
mbed_official | 390:35c2c1cf29cd | 366 | } |
mbed_official | 390:35c2c1cf29cd | 367 | |
mbed_official | 390:35c2c1cf29cd | 368 | /****************************************************************************** |
mbed_official | 390:35c2c1cf29cd | 369 | * READ/WRITE |
mbed_official | 390:35c2c1cf29cd | 370 | ******************************************************************************/ |
mbed_official | 390:35c2c1cf29cd | 371 | int serial_getc(serial_t *obj) { |
mbed_official | 437:0b72c0f86db6 | 372 | uint16_t dummy_read; |
mbed_official | 441:d2c15dda23c1 | 373 | int data; |
mbed_official | 441:d2c15dda23c1 | 374 | |
mbed_official | 437:0b72c0f86db6 | 375 | if (obj->uart->SCFSR & 0x93) { |
mbed_official | 437:0b72c0f86db6 | 376 | dummy_read = obj->uart->SCFSR; |
mbed_official | 437:0b72c0f86db6 | 377 | obj->uart->SCFSR = (dummy_read & ~0x93); |
mbed_official | 437:0b72c0f86db6 | 378 | } |
mbed_official | 437:0b72c0f86db6 | 379 | obj->uart->SCSCR |= 0x0040; // Set RIE |
mbed_official | 390:35c2c1cf29cd | 380 | while (!serial_readable(obj)); |
mbed_official | 441:d2c15dda23c1 | 381 | data = obj->uart->SCFRDR & 0xff; |
mbed_official | 441:d2c15dda23c1 | 382 | obj->uart->SCFSR &= 0xfffc; // Clear DR,RDF |
mbed_official | 390:35c2c1cf29cd | 383 | return data; |
mbed_official | 390:35c2c1cf29cd | 384 | } |
mbed_official | 390:35c2c1cf29cd | 385 | |
mbed_official | 390:35c2c1cf29cd | 386 | void serial_putc(serial_t *obj, int c) { |
mbed_official | 437:0b72c0f86db6 | 387 | uint16_t dummy_read; |
mbed_official | 437:0b72c0f86db6 | 388 | |
mbed_official | 437:0b72c0f86db6 | 389 | obj->uart->SCSCR |= 0x0080; // Set TIE |
mbed_official | 390:35c2c1cf29cd | 390 | while (!serial_writable(obj)); |
mbed_official | 390:35c2c1cf29cd | 391 | obj->uart->SCFTDR = c; |
mbed_official | 437:0b72c0f86db6 | 392 | dummy_read = obj->uart->SCFSR; |
mbed_official | 437:0b72c0f86db6 | 393 | obj->uart->SCFSR = (dummy_read & 0xff9f); // Clear TEND/TDFE |
mbed_official | 390:35c2c1cf29cd | 394 | uart_data[obj->index].count++; |
mbed_official | 390:35c2c1cf29cd | 395 | } |
mbed_official | 390:35c2c1cf29cd | 396 | |
mbed_official | 390:35c2c1cf29cd | 397 | int serial_readable(serial_t *obj) { |
mbed_official | 390:35c2c1cf29cd | 398 | return obj->uart->SCFSR & 0x02; // RDF |
mbed_official | 390:35c2c1cf29cd | 399 | } |
mbed_official | 390:35c2c1cf29cd | 400 | |
mbed_official | 390:35c2c1cf29cd | 401 | int serial_writable(serial_t *obj) { |
mbed_official | 390:35c2c1cf29cd | 402 | return obj->uart->SCFSR & 0x20; // TDFE |
mbed_official | 390:35c2c1cf29cd | 403 | } |
mbed_official | 390:35c2c1cf29cd | 404 | |
mbed_official | 390:35c2c1cf29cd | 405 | void serial_clear(serial_t *obj) { |
mbed_official | 390:35c2c1cf29cd | 406 | obj->uart->SCFCR = 0x06; |
mbed_official | 390:35c2c1cf29cd | 407 | obj->uart->SCFCR = 0x06; |
mbed_official | 390:35c2c1cf29cd | 408 | } |
mbed_official | 390:35c2c1cf29cd | 409 | |
mbed_official | 390:35c2c1cf29cd | 410 | void serial_pinout_tx(PinName tx) { |
mbed_official | 390:35c2c1cf29cd | 411 | pinmap_pinout(tx, PinMap_UART_TX); |
mbed_official | 390:35c2c1cf29cd | 412 | } |
mbed_official | 390:35c2c1cf29cd | 413 | |
mbed_official | 390:35c2c1cf29cd | 414 | void serial_break_set(serial_t *obj) { |
mbed_official | 390:35c2c1cf29cd | 415 | } |
mbed_official | 390:35c2c1cf29cd | 416 | |
mbed_official | 390:35c2c1cf29cd | 417 | void serial_break_clear(serial_t *obj) { |
mbed_official | 390:35c2c1cf29cd | 418 | } |
mbed_official | 390:35c2c1cf29cd | 419 | |
mbed_official | 390:35c2c1cf29cd | 420 | void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow) { |
mbed_official | 390:35c2c1cf29cd | 421 | serial_flow_irq_set(obj, 0); |
mbed_official | 390:35c2c1cf29cd | 422 | } |
mbed_official | 390:35c2c1cf29cd | 423 |