stmhal: Add TODO's to exti.c; fix delay in lcd.c.
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@ -66,6 +66,8 @@
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// There is also a C API, so that drivers which require EXTI interrupt lines
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// There is also a C API, so that drivers which require EXTI interrupt lines
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// can also use this code. See exti.h for the available functions and
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// can also use this code. See exti.h for the available functions and
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// usrsw.h for an example of using this.
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// usrsw.h for an example of using this.
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//
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// TODO Add python method to change callback object.
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#define EXTI_OFFSET (EXTI_BASE - PERIPH_BASE)
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#define EXTI_OFFSET (EXTI_BASE - PERIPH_BASE)
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@ -302,6 +304,7 @@ void Handle_EXTI_Irq(uint32_t line) {
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if (line < EXTI_NUM_VECTORS) {
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if (line < EXTI_NUM_VECTORS) {
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exti_vector_t *v = &exti_vector[line];
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exti_vector_t *v = &exti_vector[line];
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if (v->callback_obj != mp_const_none) {
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if (v->callback_obj != mp_const_none) {
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// TODO need to wrap this in an nlr_buf; really need a general function for this
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rt_call_function_1(v->callback_obj, MP_OBJ_NEW_SMALL_INT(line));
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rt_call_function_1(v->callback_obj, MP_OBJ_NEW_SMALL_INT(line));
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}
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}
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}
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}
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11
stmhal/lcd.c
11
stmhal/lcd.c
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@ -1,3 +1,4 @@
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#include <stdio.h>
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#include <string.h>
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#include <string.h>
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#include <stm32f4xx_hal.h>
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#include <stm32f4xx_hal.h>
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@ -59,8 +60,12 @@
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#define LCD_INSTR (0)
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#define LCD_INSTR (0)
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#define LCD_DATA (1)
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#define LCD_DATA (1)
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static void lcd_delay(void) {
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__asm volatile ("nop\nnop");
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}
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static void lcd_out(int instr_data, uint8_t i) {
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static void lcd_out(int instr_data, uint8_t i) {
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HAL_Delay(0);
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lcd_delay();
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PYB_LCD_PORT->BSRRH = PYB_LCD_CS1_PIN; // CS=0; enable
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PYB_LCD_PORT->BSRRH = PYB_LCD_CS1_PIN; // CS=0; enable
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if (instr_data == LCD_INSTR) {
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if (instr_data == LCD_INSTR) {
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PYB_LCD_PORT->BSRRH = PYB_LCD_A0_PIN; // A0=0; select instr reg
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PYB_LCD_PORT->BSRRH = PYB_LCD_A0_PIN; // A0=0; select instr reg
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@ -69,7 +74,7 @@ static void lcd_out(int instr_data, uint8_t i) {
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}
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}
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// send byte bigendian, latches on rising clock
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// send byte bigendian, latches on rising clock
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for (uint32_t n = 0; n < 8; n++) {
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for (uint32_t n = 0; n < 8; n++) {
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HAL_Delay(0);
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lcd_delay();
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PYB_LCD_PORT->BSRRH = PYB_LCD_SCL_PIN; // SCL=0
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PYB_LCD_PORT->BSRRH = PYB_LCD_SCL_PIN; // SCL=0
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if ((i & 0x80) == 0) {
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if ((i & 0x80) == 0) {
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PYB_LCD_PORT->BSRRH = PYB_LCD_SI_PIN; // SI=0
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PYB_LCD_PORT->BSRRH = PYB_LCD_SI_PIN; // SI=0
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@ -77,7 +82,7 @@ static void lcd_out(int instr_data, uint8_t i) {
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PYB_LCD_PORT->BSRRL = PYB_LCD_SI_PIN; // SI=1
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PYB_LCD_PORT->BSRRL = PYB_LCD_SI_PIN; // SI=1
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}
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}
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i <<= 1;
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i <<= 1;
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HAL_Delay(0);
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lcd_delay();
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PYB_LCD_PORT->BSRRL = PYB_LCD_SCL_PIN; // SCL=1
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PYB_LCD_PORT->BSRRL = PYB_LCD_SCL_PIN; // SCL=1
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}
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}
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PYB_LCD_PORT->BSRRL = PYB_LCD_CS1_PIN; // CS=1; disable
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PYB_LCD_PORT->BSRRL = PYB_LCD_CS1_PIN; // CS=1; disable
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